Tuesday, December 4, 2012

SCIENCE NEWS: Trees are shedding leaves later than usual

Scientists examined changes in the growing season over the Northern Hemisphere during 1982 to 2008 and found that end of the growing season has shifted to later in the year. Scientists regard changes in the growing season as an important indicator of the response of terrestrial ecosystems to climate change. The results of the research were published in the July 2011 issue of the journal Global Change Biology and were further reviewed by Climate Central on October 17, 2012.
    To measure the length of the growing season, scientists used NDVI (normalized difference vegetation index) data collected by satellites to estimate the “greenness” of vegetation growing across the Northern Hemisphere during 1982 to 2008. The NDVI calculates how much visible light is absorbed by vegetation. Healthy vegetation absorbs most visible light
    The scientists found that the length of the growing season has expanded over time due to both earlier starts to the growing season and later ends to the growing season.
     Dates for the end of the growing season in the Northern Hemisphere ranged from September 17 to November 26. While there were high amounts of variation in the data, the trends showed that the end of the growing season has shifted to later in the year. During 1982 to 1999, the end of the growing season was delayed by 4.3 days. During 2000 to 2008, the end of the growing season was further delayed by an additional 2.3 days. Overall, these data indicate that we are experiencing a long-term trend towards later autumn weather across the Northern Hemisphere.
   The scientists believe that changes observed in the growing season were largely driven by changes in temperature and precipitation over the last several decades.

  The research published in Global Change Biology was carried out by scientists from Seoul National University and the NASA Goddard Space Flight Center. It was funded by the Korea Meteorological Administration Research and Development Program.
FULL STORY: http://earthsky.org/earth/trees-are-shedding-leaves-later-than-usual

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Gift/Memorial Suggestions

Several of our friends have lost loved ones (human and pets) and we found that one of the best ways to honor their memory is to give to an animal charity.
What better way to recognize a life of love, than by giving another life a chance for love?
We donate to many animal rescues, but because we volunteer with
DC Weimaraner Rescue and Coast-to-Coast Dachshund Rescue, those are our 2 favorites.
Consider giving the chance of life to a dog or cat.

About us

We're two married guys who enjoy the simple things in life, especially our dogs. We volunteer for dog rescues, enjoy splitting dinners, exercising, blogging, helping friends and neighbors, ghost investigations, coffee and tea, Tudor history, weather, superheroes, comic books, mystery novels, traveling, 70s and 80s music, classic country, piano, gardening, writing books on ghosts and spirits, architecture, keeping a clean house, cooking simply, and keeping in shape. You'll find tidbits of all of these things on this blog and more.

Tom and Rob Thinking Hard!

Tom and Rob Thinking Hard!
Wondering what home project to do next