NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Temperature Dependence of Factors Controlling Isoprene EmissionsWe investigated the relationship of variability in the formaldehyde (HCHO) columns measured by the Aura Ozone Monitoring Instrument (OMI) to isoprene emissions in the southeastern United States for 2005-2007. The data show that the inferred, regional-average isoprene emissions varied by about 22% during summer and are well correlated with temperature, which is known to influence emissions. Part of the correlation with temperature is likely associated with other causal factors that are temperature-dependent. We show that the variations in HCHO are convolved with the temperature dependence of surface ozone, which influences isoprene emissions, and the dependence of the HCHO column to mixed layer height as OMI's sensitivity to HCHO increases with altitude. Furthermore, we show that while there is an association of drought with the variation in HCHO, drought in the southeastern U.S. is convolved with temperature.
Document ID
20100034945
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Duncan, Bryan N. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Yoshida, Yasuko (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Damon, Megan R. (Northrop Grumman - TASC Chantilly, VA, United States)
Douglass, Anne R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Witte, Jacquelyn C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
March 11, 2009
Publication Information
Publication: Geophysical Research Letters
Volume: 36
Subject Category
Geophysics
Distribution Limits
Public
Copyright
Other