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:12/15/2016)... Mich. , Dec. 15, 2016  There is ... car doors or starting the engine. Continental will demonstrate ... Las Vegas . Through the combination ... Start and Entry) and biometric elements, the international technology ... of vehicle personalization and authentication. "The integration ...
(Date:12/12/2016)... , Dec. 12, 2016  Researchers at ... possibilities for graphene by combining the material with ... highly sensitive pressure detector able to sense pulse, ... a small spider.  The research ... can be read here:  http://science.sciencemag.org/content/354/6317/1257 ...
(Date:12/8/2016)... 2016  Singulex, Inc., the leader in Next Generation ... a license and supply agreement with Thermo Fisher Scientific, ... Singulex access to Thermo Scientific BRAHMS PCT (Procalcitonin), a ... used to diagnose systemic bacterial infection and sepsis and ... aid in assessing the risk of critically ill patients ...
Breaking Biology News(10 mins):
(Date:1/17/2017)... ... January 17, 2017 , ... ... Safety Technology Consortium™ (SafeTEC™), $3 million in investment towards 15+ TEC Validation Projects™. ... and assays, and their applicability in drug safety assessment, for the industry as ...
(Date:1/17/2017)... COLUMBUS, Ohio , Jan. 17, 2017  On ... with the 35th Annual J.P. Morgan Healthcare Conference in ... Joseph D. Kittle, Jr. , spoke to pharmaceutical ... technology developed by ProclaRx to break down and destroy ... which protect bacteria and prevent antibiotics and the body,s ...
(Date:1/16/2017)... , Jan. 16, 2017  Eurofins Genomics today announced ... allow more customers to receive their primers in a ... compromise in quality found with other providers. Express oligos ... States at no additional fee. ... genetic studies, including DNA sequencing, genotyping, site-directed mutagenesis, and ...
(Date:1/13/2017)... Research and Markets has announced the addition of the ... ... a CAGR of 16.83% during the period 2017-2021. The ... biopolymers market for 2017-2021. To calculate the market size, the report considers ... report also includes a a discussion of the key vendors operating in ...
Breaking Biology Technology: