Navigation Links
Mid-Atlantic suburbs can expect an early spring thanks to the heat of the big city
Date:3/10/2012

If you've been thinking our world is more green than frozen these days, you're right. A recent study has found that spring is indeed arriving earlier and autumn later in the suburbs of Baltimore and Washington, D.C. The reason? The urban landscape traps heat in the summer and holds it throughout the winter, triggering leaves to turn green earlier in the spring and to stay green later into autumn. The result is a new, extended growing season.

Scientists used high-resolution satellite data collected over the past 25 years to look at the number days that trees have green leaves in the forests of the Mid-Atlantic. The study found that urban heat islands affected the growing season in areas within 20 miles of the city. As a result, gardeners may have more time to grow their vegetables and plant new varieties.

The longer growing season also has a profound impact on forests. Forests are, in effect, the world's air filters. Green leaves on trees turn carbon dioxide a greenhouse gas that traps heat in our atmosphere into oxygen. Carbon dioxide also helps trees grow since they use energy from the sun to convert the gas into plant matter. A longer growing season could change quickly forests grow and increase the amount of carbon dioxide taken out of the atmosphere.

"Everything changes when the leaves turn green," said the study's lead author Dr. Andrew Elmore of the University of Maryland Center for Environmental Science. "Trees start pumping water into the atmosphere. They take carbon dioxide out of the atmosphere. They make sugars and build plant tissue. It's as if the entire landscape goes from exhaling to inhaling."

The study also pinpointed other factors that influence the timing of spring and autumn in areas outside the influence of urban heat islands, including the elevation of the landscape, proximity to tidal water, and cold air drainage in small valleys.

Not all forests are the same, however, and predicting which forests will grow faster during a longer growing season requires detailed satellite measurements. This study is the first to apply high-resolution satellite data to the problem. "We are trying to understand how forests function so we can understand how they might respond to global warming," said Dr. Elmore. "With more detailed data, we can do better job of predicting what might happen to a forest impacted by urbanization, for instance."


'/>"/>
Contact: Amy Pelsinsky
410-330-1389
University of Maryland Center for Environmental Science
Source:Eurekalert  

Related biology news :

1. Annual survey shows high numbers of seed scallops on Georges Bank, low numbers in Mid-Atlantic
2. For birds, the suburbs may not be an ideal place to raise a family
3. Unexpected crustacean diversity discovered in northern freshwater ecosystems
4. A bugs (sex) life: Diving beetles offer unexpected clues about sexual selection
5. Cell Therapeutics, Inc. Expects That the European Medicines Agencys (EMA) Committee for Medicinal Products for Human Use (CHMP) May Issue an Opinion on the Marketing Authorization Application ("MAA") on Pixuvri™ in Mid-February
6. Georgetown researchers lead discovery expected to significantly change biomedical research
7. An unexpected player in a cancer defense system
8. Study shows unexpected effect of climate change on body size for many different species
9. Professor Peter J. Coffeys stem cell therapy for Age-Related Macular Degeneration expected to begin clinical trials in 2012
10. Unexpected role of noise in spine formation
11. Research finds Greenland glacier melting faster than expected
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mid-Atlantic suburbs can expect an early spring thanks to the heat of the big city
(Date:4/18/2017)... SUNNYVALE, Calif. , April 18, 2017  Socionext Inc., a ... prototype of a media edge server, the M820, which features the ... face recognition software provided by Tera Probe, Inc., will be showcased ... and at the NAB show at the Las Vegas ... ...
(Date:4/13/2017)... According to a new market research report "Consumer IAM Market ... Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region - Global Forecast ... from USD 14.30 Billion in 2017 to USD 31.75 Billion by 2022, ... ... MarketsandMarkets Logo ...
(Date:4/11/2017)... N.Y. , April 11, 2017 ... fingerprints, but researchers at the New York University ... College of Engineering have found that partial similarities ... security systems used in mobile phones and other ... thought. The vulnerability lies in the ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... Tampa Bay, Florida (PRWEB) , ... October 11, ... ... Food and Drug Administration (FDA) has granted orphan drug designation to SBT-100, its ... antibody (sdAb) for the treatment of osteosarcoma. SBT-100 is able to cross the ...
(Date:10/10/2017)... Oct. 10, 2017 International research firm Parks Associates ... speak at the TMA 2017 Annual Meeting , October 11 in ... the residential home security market and how smart safety and security products ... Parks Associates: Smart ... "The residential security market ...
(Date:10/9/2017)... ... October 09, 2017 , ... The award-winning American Farmer ... first quarter 2018. American Farmer airs Tuesdays at 8:30aET on RFD-TV. , With ... with the challenge of how to continue to feed a growing nation. At the ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... technologies, launched its ProxiMeta™ Hi-C metagenome deconvolution product, featuring the first commercially ... cloud-based bioinformatics software to perform Hi-C metagenome deconvolution using their own facilities, ...
Breaking Biology Technology: