WeatherNation Blog

Tropical Storm Aletta, Severe Storms in New England & Record Spring for Allergies.

As one of its major goals within the 10 years, the hurricane center hopes to generate six- and seven-day forecasts to give residents, businesses and the military more time to prepare….Currently, the center issues track forecasts out to five days, with an average error of about 275 miles.” – from a story at staugustine.com; details below.

From February through April, pollen was at record high levels. This coincided with one of the driest and warmest winters on record.” – from a story at NJ.com – details below.

Scientists say climate change might also be adding an extra kick to La Nina and El Nino because warmer oceans add more fuel to storms and weather patterns.” – from a Reuters article below.
First Tropical Storm of 2012: “Aletta”. A threat to ships and slow-moving whales, T.S. Aletta is pushing west, out into the colder waters of the Pacific Ocean, where it should slowly weaken – no threat to land. More from NASA’s Facebook site: “The eastern Pacific hurricane season starts today. Just slightly ahead of schedule tropical storm Aletta formed yesterday well to the southwest of the Mexican coast. Aletta will intensify a little more to 40 knots. After tomorrow, adverse atmospheric conditions will prompt weakening and dissipation as the cyclone continues to move just north of west. Max winds are near 35 knots, it is centered near 10.6 North and 109.6 West.”* image above: Naval Research Lab.
Wednesday Severe Threat. An eastbound cool front may spark enough convergence for a few severe storms from Albany to Worcester, Burlington and Montpelier, Vermont. Map: SPC.

Why Do El Nino And La Nina Trigger Weather Chaos? Reuters has an informative article; here’s an excerpt: “From record floods to crippling droughts and wildfires, a natural swing in Pacific Ocean temperatures can trigger climate chaos around the globe. The El Nino ocean-weather pattern is linked to droughts in Australia and floods in parts of South America, while its sibling La Nina causes the opposite, with the two phenomena occurring at irregular intervals. A powerful La Nina triggered record floods in eastern Australia in 2011 and has been blamed for the withering drought in Texas and severe dry spells in South America, hitting corn and soy crops.”

DC3: Chemistry of Thunderstorms. Flying planes into thunderstorms to gather more data? I suspect drinks are not served on these flights; here’s an excerpt of an eye-opening article at redorbit.com: “NASA researchers are about to fly off on a campaign that will take them into the heart of thunderstorm country. The Deep Convective Clouds and Chemistry (DC3) field campaign will use an airport in Salina, Kan., as a base to explore the impact of large thunderstorms on the concentration of ozone and other substances in the upper troposphere. The campaign is being led by the National Center for Atmospheric Research in Boulder, Colorado, and is funded by the National Science Foundation (NSF) and NASA. “Thunderstorms provide a mechanism for rapid lifting of air from the surface to higher altitudes in a matter of minutes to hours,” said James Crawford of NASA’s Langley Research Center in Hampton, Va., and a member of the mission’s scientific steering committee.”

Photo credit above: “NASA’s DC-8 Earth Science laboratory sports numerous probes for collecting atmospheric samples. The aircraft, based at the Dryden Aircraft Operations Facility in Palmdale, Calif., is ready to participate in the DC3 campaign. Credit: NASA/Tom Tschida.”

NASA researchers are about to fly off on a campaign that will take them into the heart of thunderstorm country.
The Deep Convective Clouds and Chemistry (DC3) field campaign will use an airport in Salina, Kan., as a base to explore the impact of large thunderstorms on the concentration of ozone and other substances in the upper troposphere. The campaign is being led by the National Center for Atmospheric Research in Boulder, Colorado, and is funded by the National Science Foundation (NSF) and NASA.
“Thunderstorms provide a mechanism for rapid lifting of air from the surface to higher altitudes in a matter of minutes to hours,” said James Crawford of NASA’s Langley Research Center in Hampton, Va., and a member of the mission’s scientific steering committee.
“This allows molecules that are short-lived and more abundant near the surface to be transported to the upper troposphere in amounts that could not happen under normal atmospheric conditions,” he said.

Hurricane Center To Develop 6 And 7 Day Forecasts. Details from staugustine.com: “FORT LAUDERDALE — For the first time, the National Hurricane Center plans to develop six- and seven-day track forecasts for an entire storm season. It also plans to do a better job keeping them secret, as they leaked out to the public last year, cutting the experiment short. “We weren’t able to button them up; people were finding them,” said James Franklin, the center’s top hurricane specialist. The long-range forecasts are one of four in-house experiments the hurricane center plans to conduct in the upcoming season, which officially starts June 1.”

Hurricane Center Testing Forecast Improvements. Here’s another perspective fromThe Boston Herald: “MIAMI — The National Hurricane Center plans to broaden its forecasting capabilities by conducting four in-house experiments in the upcoming season, including developing six- and seven-day track projections. The other tests include extending the tropical weather outlook from two to five days, developing advisories for disturbances before they become tropical systems and issuing watches and warnings if disturbances threaten land. At the same time, it will employ more sophisticated models to help with intensity predictions, an area where forecasters have struggled for decades.”

“Lessons From Hurricane Ike Prompts Action”. The story (and video clip) fromphys.org: “As teachers go, Hurricane Ike isn’t likely to win any popularity contests. But the 2008 storm, the third-costliest hurricane in U.S. history, taught severe-storm experts much about how to protect Houston and Galveston from the ravages of future storms. In the new book “Lessons from Hurricane Ike,” Rice University severe-storm expert Phil Bedient and more than 20 researchers from the Severe Storm Prediction, Education and Evacuation from Disasters (SSPEED) Center give a 194-page accounting of all they have learned in more than two years of studying Ike, which caused nearly $25 billion damage and killed dozens.”

U.S. Government, Wireless Carriers, Launch Weather Emergency Alerts This Month. Text alerts should be part of your family’s severe weather action plan, along with TV, radio, web, e-mail, NOAA Weather Radio (and sirens). Details from mobileburn.com: “The U.S. Government and wireless carriers in the States are set to launch the Wireless Emergency Alert (WEA) system this month. The WEA is a free service that uses text message alerts to inform cellular phone users of nearby weather emergencies. The alerts will warn users of weather emergencies and dangerous weather conditions such as tornadoes, hurricanes, floods, typhoons, blizzards, dust storms, extremely high winds, and ice storms. The system is location based, so users will only get alerts that apply to where they are currently located. The WEA system is supported by AT&T, Cellcom, Cricket, Sprint Nextel, T-Mobile, U.S. Cellular, and Verizon Wireless, which combined offer cellular service to about 97 percent of the users in the United States.”

Exposure To Natural Cold and Heat: Hypothermia and Hyperthermia Medicare Claims, 2004-2005. With a rapidly aging population, more baby boomers moving into their “golden years”, I found this research paper at medscape.com interesting. Here’s an excerpt:  “Older adults (≥ 65 years) and persons with chronic diseases are at risk for heat- and coldrelated mortality and morbidity during extreme ambient temperatures. Even slight changes in temperature can adversely affect these populations because of their weakened physiological adaptability and socioeconomic factors. As the growing evidence of global climate change supports anticipated increases in the intensity and frequency of heat waves and extreme cold events, older adults and those with chronic diseases will be at an increased risk for hyperthermia and hypothermia. The US Census Bureau projects that the number of older adults will rapidly increase during the 2010 to 2030 period. Accordingly, it is projected that by 2030, the older population will be 2 times greater than in 2000, growing from 35 million to 72 million, or nearly 20% of the total US population.”

Data App: Track Texas Reservoir Levels. Although the drought has eased a bit over parts of Texas, water levels are still very low, especially from the Hill Country into the Texas Panhandle. The Texas Tribune has details of a new online resource for tracking reservoir water levels: “The most intense drought in Texas history lowered reservoir levels around the state, stirring widespread concern about water shortages. By April 2012 many had bounced back, particularly in Central and East Texas, after those areas saw an unusually rainy spring. But many West Texas levels remain very low. Using data collected from the Texas Water Development Board’s reservoir status tracker, we have built a tool that visualizes the current levels of the state’s reservoirs. The map will be updated daily with fresh data. Each icon on the map represents an individual reservoir, color-coded based on how full it is currently.

Postcard-Perfect. Here’s a post from Glacier National Park, brought to you by Mark Zuckerberg. Hey, is Facebook going public? Here’s a hot tip: buy low, sell high. Good luck. “It is turning out to be another spectacular day in Glacier, and Avalanche Gorge never looked so good. At this location on the Trail of the Cedars, you can witness the power of water. From its sculpting and erosional action, to the nourishment it provides to plants and animals, and the emotional impact it has on us, water is very significant here.”

Get Rich U. Author Ken Auletta writes “there are no walls between Stanford and Silicon Valley. Should there be? Here is an excerpt of a thought-provoking article at The New Yorker: “Stanford University is so startlingly paradisial, so fragrant and sunny, it’s as if you could eat from the trees and live happily forever. Students ride their bikes through manicured quads, past blooming flowers and statues by Rodin, to buildings named for benefactors like Gates, Hewlett, and Packard. Everyone seems happy, though there is a well-known phenomenon called the “Stanford duck syndrome”: students seem cheerful, but all the while they are furiously paddling their legs to stay afloat. What they are generally paddling toward are careers of the sort that could get their names on those buildings. The campus has its jocks, stoners, and poets, but what it is famous for are budding entrepreneurs, engineers, and computer aces hoping to make their fortune in one crevasse or another of Silicon Valley.

Photo credit above: “Students at the Institute of Design at Stanford, or d.school, work this spring on an irrigation project for farmers in Burma. The work is part of the university’s focus on interdisciplinary education. Photograph by Aaron Huey.”
Climate Stories…

As Global Warming Advances, Risky Responses Gain A Following. Here’s an important article focused on geo-engineering, using technology to slow or reverse the effects of global warming. Good idea? What could possibly go wrong? Here’s an excerpt from MinnPost.com: “A British chemical engineer, Peter Davidson, presented a webinarearly this morning on his strategy to combat global warming: Fog Earth’s upper atmosphere with paint particles, streamed from giant balloons, to reflect sunlight away from Earth and offset the greenhouse effects of burning fossil fuel. Plan B, indeed. As the years roll by with essentially no meaningful progress on cutting carbon emissions, “geo-engineering” solutions like Davidson’s attract more attention and perhaps even faith from those inclined to believe that since technology got us into this mess, technology can somehow get us out.”Photo credit above: Columbia Scientific Balloon Facility. “A new paper proposes using large balloons to scatter sunlight and slow global warming.”
Climate Change Is Making Allergies WorseNJ.com has the story; here’s an excerpt: “Spring is in full swing and swung into New Jersey earlier than ever this year. Extreme weather events and drastic changes in weather patterns are becoming a common occurrence. The effects of climate disruption on human health already are afflicting allergy and asthma sufferers along the East Coast and throughout the continental United States. May is “Asthma Awareness Month” and this spring’s pollen levels are making history. Unseasonably warm temperatures affect both air quality and pollen levels.”Photo credit above: “Photo courtesy of the American Academy of Allergy, Asthma and ImmunologyAirborne ragweed pollen is pictured in this file photo.”
Global Warming To Affect Fish Guts. Oh no – not fish guts! There may be aquatic winners and losers as lake, river and ocean water temperatures continue to rise, as reported in this excerpt of a story at New Zealand’s 3news.com: ”Global warming may cause some stocks of fish species to decline, while others may grow. The gastrointestinal system of fish is much more sensitive to rises in sea temperatures than previously thought, according to new research. The researchers found that the gut in fish is the most temperature-sensitive organ. “Our work is largely about trying to identify the physiological bottlenecks, in other words which parts of the body will fail first – whether the heart or the gut is the most sensitive part of the system,” said study researcher Albin Gräns, of the University of Gothenburg, in a statement.”
Climate Change In The American Mind: March, 2012. Here’s an excerpt from some recent polling conducted by The National Center For Science Education: ”… Asked about the cause of global warming, on the assumption that it is happening, 46% of respondents said that global warming is caused mostly by human activities — a slight decrease — while 37% said that it is caused mostly by natural changes in the environment, 9% volunteered that it is caused by both human activities and natural changes, 5% opted for “none of the above because global warming isn’t happening,” 2% offered other views, and 1% volunteered that they did not know.”

Oil And Gas Industry Moving Aggressively To Silence Critics. Here’s an excerpt from a story at The Huffington Post: “At an industry public relations conference last year, Michael Kehs of Chesapeake Energy described a Wall Street Journal op-ed to gathered oil and gas officials, saying it pointed out the industry’s “credibility problem.” “And I’m sure some of it relates to defensiveness,” Kehs added. (MP3 Audio)  Small wonder. For years, the oil and gas industry has adopted a war-like mentality towards its critics. When confronted with problems caused by drilling and fracking, instead of acknowledging them and working to prevent more, their approach has too often been to cover up the issues while attacking any critics who make problems known publicly. This pattern has sharply accelerated in recent months.”

New Push To Limit “Super Greenhouse” Gases. Meteorologist Andrew Freedman fromClimate Central has the story; here’s an excerpt: “United Nations climate change talks may be on a slow train to nowhere, but that doesn’t mean countries can’t try tackling global warming at the international level. Friday, the Federated States of Micronesia, a Pacific island nation, submitted a plan to amend the 1989 Montreal Protocol on Substances That Deplete the Ozone Layer to phase down the production and use of so-called “super-greenhouse gases.” The Micronesian proposal, which has garnered the support of more than 100 parties to the ozone treaty, including the U.S. and the European Union, seeks to cut emissions of hydrofluorocarbons, or HFCs, which are compounds that contain carbon, hydrogen, and fluorine. These substances are used as solvents, refrigerants, firefighting agents, and propellants. They were introduced as a substitute for the chloroflourocarbons, or CFCs, that scientists discovered were destroying the Earth’s protective ozone layer — thereby allowing greater amounts of the Sun’s harmful ultraviolet rays to reach the Earth’s surface.”Photo credit above: “The Antarctic ozone hole as depicted by NASA satellite sensors in 2004. Credit: NASA.”

Wind-Generated Energy Is Working Well For Us In Iowa. Here’s an excerpt of a letter to the editor of the Wall Street Journal from Iowa Governor Branstad: “Your recent editorials on the federal wind-energy Production Tax Credit (PTC) and renewable portfolio standard (RPS) (“Gouged by the Wind,” May 5 and “Windy Republicans,” May 7) are off the mark. The wind-power industry is an American success story that is helping us build our manufacturing base, create jobs, lower energy costs and strengthen our energy security. As a country, we should support energy diversity and development of all domestic resources, creating an “all of the above” energy strategy. To that end, our state and national energy plans have long relied on varying policies and incentives, such as the PTC and RPS, to deploy technologies that ensure a diverse domestic energy fleet.Iowa has long played a leadership role in developing wind power—a clean, domestic, affordable resource. During my first term as governor, I signed the first RPS in the country, and it continues to drive billions in private investment in Iowa, as well as helping electric consumers.”

Americans Would Pay More For Clean Energy. Would Congress? Here’s a snippet from The Washington Post: “Would Americans be willing to pay more for cleaner electricity? A new study finds that they would — $162 a year extra, on average. But there’s a catch: This “willingness to pay” isn’t evenly spread across the country, which may explain why Congress isn’t eager to pass a clean-electricity bill. Last year, a trio of researchers from Yale and Harvard conducted a national survey asking Americans a very simple question: Would they be interested in a law that required utilities to get 80 percent of their electricity from low-carbon sources such as wind, solar and nuclear by 2035? Different respondents were given different descriptions of the bill and different price tags. (After all, low-carbon energy often costs more.) The results were recently published in Nature Climate Change. And, on average, $162 a year extra was the breaking point. That’s what Americans would pay.”
Photo credit above: “Would you pay $162 for this? (Paul Sakuma – AP).”

Hawaii’s Beaches Are In Retreat, And Way Of Life May Follow. Here’s an excerpt fromThe New York Times: “Little by little, Hawaii’s iconic beaches are disappearing. Most beaches on the state’s three largest islands are eroding, and the erosion is likely to accelerate as sea levels rise, the United States Geological Survey is reporting. Though average erosion rates are relatively low — perhaps a few inches per year — they range up to several feet per year and are highly variable from island to island and within each island, agency scientists say. The report says that over the last century, about 9 percent of the sandy coast on the islands of Hawaii, Oahu and Maui has vanished. That’s almost 14 miles of beach.”

Photo credit above: Hawaii from space courtesy of universetoday.com.

Inhofe Staffer Asks Oil Lobbyist “Partners” For “Better Coordination and Communication”. Think Progress has the story: “Republicans are the default choice for oil and gas dollars, having received 88 percent of the industry’s political contributions in 2011. In return, House and Senate Republicans block regulations the industry deems a potential threat. In an April 23 e-mail acquired by National Journal, a staffer for Sen. James Inhofe (R-OK) called on the industry to utilize their partnership to coordinate attacks on the White House: Senate Republicans, who led a successful fight this spring against Obama’s proposal to repeal billions of dollars in tax subsidies enjoyed by major oil companies, felt betrayed by the industry’s collaboration with the White House on fracking regulations.”

Earth’s Environment Getting Worse, Not Better, Ahead of Rio+ 20. The Guardian has the story – here’s a clip: “Twenty years on from the Rio Earth summit, the environment of the planet is getting worse not better, according to a report from WWF. Swellingpopulation, mass migration to cities, increasing energy use and soaring carbon dioxide emissions mean humanity is putting a greater squeeze on the planet’s resources then ever before. Particularly hard hit is the diversity of animals and plants, upon which many natural resources such as clean water are based. “The Rio+20 conference next month is an opportunity for the world to get serious about the need for development to become sustainable. Our report indicates that we haven’t yet done that since the last Rio summit,” said David Nussbaum, WWF-UK chief executive.”

Running From Climate Change May Trip Up Some Species, Study Says. Here’s an excerpt from The Boston Herald: “As climate change transforms their habitat, some animals are already on the move. But a new analysis from the University of Washington warns that many species won’t be able to run fast enough to survive a warming world. On average, about 9 percent of the Western Hemisphere’s mammals migrate too slowly to keep pace with the rapid climate shifts expected over the next century, says the study published Monday in the Proceedings of the National Academy of Sciences. In some areas, including parts of the Appalachian Mountains and the Amazon basin, nearly 40 percent of mammals may be unable to reach safe haven in time.”

Antarctic Ice Sheet Collapse Recorded In Octopus DNA. Here’s a fascinating story from Scientific American: “Octopuses have made themselves at home in most of the world’s oceans—from the warmest of tropical seas to the deep, dark reaches around hydrothermal vents. Antarctic species, such as Turquet’s octopuses (Pareledone turqueti), even live slow, quiet lives near the South Pole. But these retiring creatures offer a rare opportunity to help understand how this extreme part of the Earth has changed in recent geologic times—and what climate change might bring there in the near future.”

Chance Of Bangladesh Sinking Under Rising Sea Levels. Here’s an Op Ed from The Financial Express: “Science as a Contact Sport; inside the battle to save Earth’s climate” by Stephen Schneider is an illuminating book by a world renowned climate scientist and professor at the Woods Institute for the Environment at Stanford University. In 2007, Schneider received the Nobel Peace Price on behalf of the International Panel for Climate Change (IPCC), along with Al Gore. His book is a recounting of his efforts over three decades to get the US government and the rest of the world to pay attention to climate change science. The basic question which climate science has tried to answer is: how serious is climate change? But communicating a scientific answer to this question has been impossible, Schneider says, as politicians, journalists and the average person on the street does not understand that scientific predictions and models of climate change can only predict probabilities of particular outcomes.” Photo above: NASA.

Climate Change Believers Split From Heartland Institute. An update from slate.com: “On Friday, the libertarian, Chicago-based Heartland Institute made a routine-sounding announcement. It would “spin off its insurance research project effective May 31.” The D.C.-based Center on Finance, Insurance, and Real Estate would break off; its director, Eli Lehrer, would found some new project. “We urge any individual, foundation, and corporation with an interest in insurance and related finance issues to contribute to Eli’s new organization once it is up and running,” said Heartland President Joseph Bast in a statement. “We look forward to working closely with Eli in the future.” Today, the spin-off — dubbed the R Street Institute — sent out a statement from its spokesman, R.J. Lehmann. Most of it was boilerplate about how the team of six Heartland refugees would keep working on “much the same portfolio of issues we already have been.”

On Climate Change, A Need For A Realistic Plan. Here’s a snippet from an Op Ed atThe Montreal Gazette: “Despite sustained misgivings within party and caucus ranks, the federal Conservative government has, however reluctantly, come around to acknowledging that human-generated greenhouse gases are a driving factor in global climate change that is becoming increasingly evident and undeniable. What is still lacking, however, is a comprehensive approach to the problem and adequate information to educate the Canadian public as to the scope of the effort required to cut those emissions to sustainable levels, and the costs involved. These failings were cast into sharp relief by this month’s report by the federal commissioner of the environment and sustainability, which challenged the government’s assurances that it has an effective climate-change plan in place with an achievable target for greenhouse-gas reduction.”
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ABOUT ME

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Welcome to the WeatherNation blog. Every day I sift through hundreds of stories, maps, graphics and meteorological web sites, trying to capture some of the most interesting weather nuggets, the stories behind the forecast. I’ll link to stories and share some of the web sites I use. I’m still passionate about the weather, have been ever since Tropical Storm Agnes flooded my home in Lancaster, PA in 1972. I’ve started 5 weather-related companies. “EarthWatch” created the world’s first 3-D weather graphics for TV stations – Steven Spielberg used our software in “Jurassic Park” and “Twister”. My last company, “Digital Cyclone”, personalized weather for cell phones. “My-Cast” was launched in 2001 and is still going strong on iPhone, Android and Blackberry. I sold DCI to Garmin in 2007 so I could focus on my latest venture: WeatherNation. Twitter: @pdouglsweather

Global Warming Faster Than Predicted?


Dr. Tina Tin recently published an article entitled: “An Overview of the Climate Science published Since the UN IPCC Fourth Assessment Report” for the World Wildlife Fund (worldwildlife.org). An article discussing the release is available on panda.org, and I have placed a pdf copy of the article on one of our servers (their download was excessively slow) that you may download to print as I provide a synopsis of the article for you.

Synopsis of Dr. Tin’s Article
I will briefly outline relevant sections of Dr. Tin’s work for you. While reading, keep in mind that her work was intended for an audience based in the European Union. However, since the concept of global warming is indeed a global issue, all works must be given due consideration.

Foreward & Introduction
Dr. Tin begins by stating that since the IPCC forecasts were released in 2007, new research is revealing that global warming is accelerating far beyond what was predicted. For those unaware, the IPCC report involves over 3,800 scientists worldwide from over 150 countries, with work spanning six years. As Dr. Tin contends, the IPCC report stated in clear terms that human-induced climate change is indeed a reality. The IPCC (and Al Gore) received the 2007 Nobel Peace Prize “for their efforts to build up and disseminate greater knowledge about man-made climate change, and to lay the foundations for the measures that are needed to counteract such change.”

Dr. Tin continues in her introduction that while the IPCC forecasts are a significant stepping stone to grasping the innate complexities and urgency of global warming, the less than 1°C of global warming we have experienced thus far may have already triggered the first obviously observable Earth response to global warming: decreasing summer Arctic Ice coverage. She contends that the process of dramatic reduction in the north could lead to a more rapid change in Earth’s climate system as opposed to a more gradual progression.

In her forward Dr. Tin states that the WWF (worldwildlife.org) calls on the European Union to implement two basic strategies:

1. Immediately adopt an emission reduction target of at least 30% below 1990 levels by 2020 – to be delivered within the boundaries of the EU; and

2. Commit – on top of its own reduction target – to provide additional substantial support and funding for investment in socially and environmentally robust adaptation and mitigation activities in developing countries

Dr. Tin concludes her introduction by stating that because recent research is indicating the IPCC forecasts of global warming were slower than what recent research indicates, the EU (and in essence all countries) need to initiate mitigation and adaptation responses to global warming in a more rapid and ambitious manner.

Tin’s Evidence
Climate Change Today: Stronger Than Expected, Sooner Than Forecast

Dr. Tin begins the evidence section of her article by outlining research conducted since the IPCC’s Fourth Assessment Report. Her first concern is feedback mechanisms related to the Arctic Ocean.

Tip: For those unaware, the basic concept of feedback mechanisms is that they may be ‘positive’ or ‘negative.’ With global warming, positive feedback is where a change in the environment might lead to additional changes (or enhanced changes) within the climate system. Negative feedback is if a change is introduced and instead of enhancing a process, it leads to what are called ‘compensating factors’ or processes that mitigate the change. In this section of the article Dr. Tin is discussing a process called the ‘ice-albedo’ mechanism that is a positive feedback mechanism. An example of a negative feedback mechanism (not actually addressed as fully as it should have been in the IPCC report) in the process of global warming is that as more CO2 is introduced into the atmosphere, plant growth is enhanced allowing a larger uptake of the atmospheric gas. However, the ability for Earth’s flora and fauna to filter out carbon dioxide was exceeded years ago, and deforestation/urbanization has dramatically decreased this process.

To continue, Dr. Tin states that because less sea ice allows more warming of Arctic waters (positive feedback) the ability for refreeze is reduced each year, and that we have reached a ‘tipping point’ in the Arctic Ice system. New forecasts state that the Arctic Ocean could be completely ice-free somewhere between 2013-2040 (I’m confident it will be on the early side of that time spectrum), a condition that has not occurred in over a million years.

In the Antarctic Peninsula, tide-water glaciers are losing ice faster, increasing the rate at which sealevel is rising that is faster than predicted in the Fourth Assessment Report. Dr. Tin continues by showing that more recent research is indicating that globally, since 1990, mean sea level has risen 1 1/2 times faster than predicted in the third assessment report, and new studies have more than doubled the maximum estimated increase in the fourth assessment report.

Tip: Recall my earlier post about the concept of phase change, and that the amount of water that exists on our planet (in its various forms) is essentially constant. With global warming, when dealing with ice loss what is occurring is simply a redistribution of water from frozen form on land, to liquid form in our oceans. Example: take an ice cube from your freezer and place it in a cup of water, the water level will rise due to the introduction of additional mass.

Global carbon dioxide emissions have grown 3% per year between 2000-2004, a rate greater than any scenario used by the IPCC for either their third, or fourth assessment report (as an FYI China is now the largest emitter globally, as can be viewed in this article or via a simple google search). About half of the CO2 emissions have been absorbed by carbon sinks over the last 15 years, however their capability to do so is declining, and as previously stated is far below current emission levels.

Tip: What Dr. Tin was referring to above is known as carbon sequestration. Essentially a process where carbon dioxide is removed from the atmosphere and stored. The most common carbon sinks for our atmosphere are flora and fauna (photosynthesis) and Earth’s oceans.

As Dr. Tin continues, she states that a re-examination of the climate impacts shows that an 80% cut in global greenhouse gas emissions are needed by 2050 to keep the global average temperature rise below 2°C, and to limit climate impacts to what are deemed ‘acceptable’ levels.

Climate Change Tomorrow? A snapshot of a Future Warmer World
Dr. Tin continues by outlining a few of the many impacts that will occur as a result of global warming.

Food, Agriculture, and Fisheries
Since 1981, global warming has lead to a reduction in global yields of wheat, corn, and barley and resulted in annual yield losses of roughly $5 billion dollars. South Asia and southern Africa will suffer significant production reductions as a result of global warming in an area with already large, and increasing populations.

Health
Children in the poorest nations will be affected the hardest and first, due to increased disease, air pollution, and thermal stress on their bodies as they are in their developing stages. This does not account for the decreased availability of food and water as already hunger prone regions become more so.

Ecosystems
Dr. Tin lists a few of the obvious changes in our ecosystem associated with global warming such as:

1. Shrinking glaciers on every continent
2. Lake and river warming
3. Increased coastal erosion
4. Shifts in spring events for living organisms (leaf unfolding, blooming date, migration, time of reproduction)
5. Replacement of cold-adapted species by warm-adapted species (especially in oceans)

Dr. Tin further discusses the approaching extinction of certain climatic conditions and the affects of those changes to various species. Such as the tropics and subtropics will see dramatically warmer conditions which is critical, as many species do not have the ability to adapt to climatic fluctuations, while polar climates are likely to disappear altogether. These concepts add increased stress to the IPCC’s fourth assessment report which stated that up to 30% of plant and animal species will be at high risk of extinction (simply from climate changes and not direct human influence from urbanization and overfishing / hunting).

Wrap it up
The balance of Dr. Tin’s report deals with localized impacts of climate change to the European Union which echo some of the sentiments above. As previously stated you are certainly welcome to read her article. While it does not nearly contain all the issues that need to be considered in regard to global warming, it does provide some important points to think about. It is important for everyone to read relevant articles on the issue to become informed, instead of simply hearing snippets from various sources that are sometimes used to form an opinion. For example, you might wish to view the full IPCC fourth assessment report here in PDF format (the document is 200 pages long and 7.1meg in size.. I have placed it on one of our servers to allow you a faster download), or online. With the upcoming election you may wish to view an interesting article by the New York Times about the candidates’ position on global warming, in addition to feedback by U.S. industry.

On current weather issues, NAM and GFS are arguing over snowfall in the Great Plains on Tuesday and Wednesday. I’m going to override NAM on this one and say we will see some snow =) The northeastern United States will also see some snow, especially in higher elevations but large accumulations are not expected. The Pacific Northwest through Idaho and the northern Rockies will see some snow the next couple days, and will then warm up later in the week as a strongly amplified trough digs and moves into the great plains by midweek, bringing some of the coldest temperatures yet this season. As the system moves out of the great plains a slight possibility of flooding will follow, especially in central Iowa. Keep an eye on our HWwarnings and HAMrad II products as the system moves through, it’s fun!

As always stay tuned to your favorite weather outlet, stay informed, and stay safe!

cheers,

–patrick

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