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(Greenbelt, Maryland) A new sensor on a NASA Earth-orbiting satellite has for the first time observed a global-scale die off of vegetation, a new article in Science magazine reports this week.
"We were amazed at the continental scale that this die off occupied", said Dr. John Jorgenson of NASA's Goddard Space Flight Center. The relatively rapid change in vegetation characteristics was observed from late summer through the fall, when the multi-million dollar NASA instrument recorded a distinct change in vegetation color from green to various shades of yellow, brown, orange, and red.
"While there have been anecdotal reports for many years of this die-off phenomenon, those reports have been restricted to local regions. We have, for the first time, documented the global scale of the event, which covers much of the Northern Hemisphere during the months of September and October", said Dr. Jorgenson.
"We were amazed at the continental scale that this die off occupied", said Dr. John Jorgenson of NASA's Goddard Space Flight Center. The relatively rapid change in vegetation characteristics was observed from late summer through the fall, when the multi-million dollar NASA instrument recorded a distinct change in vegetation color from green to various shades of yellow, brown, orange, and red.
"While there have been anecdotal reports for many years of this die-off phenomenon, those reports have been restricted to local regions. We have, for the first time, documented the global scale of the event, which covers much of the Northern Hemisphere during the months of September and October", said Dr. Jorgenson.
