NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Global land-surface primary productivity based upon Nimbus-7 37 GHz dataAccumulation and renewal of organic matter as quantified through net primary productivity (NPP) is considered a very major function of the biosphere, and its estimation is crucial in understanding the carbon cycle. A physically-based model relating NPP to the difference of vertically and horizontally polarized brightness temperatures (Delta T) observed at 37 GHz frequency of the scanning multichannel microwave radiometer on board the Nimbus-7 satellite is used for fitting areally averaged values of NPP and Delta T for five biomes. The land-surface NPP within 80 deg N to 55 deg S is then calculated using the Delta T data and compared with other estimates.
Document ID
19890030330
Document Type
Conference Paper
Authors
Choudhury, B. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1988
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Report/Patent Number
IAF PAPER 88-159
Distribution Limits
Public
Copyright
Other