NDLI: Effects of uncertainty in trmm precipitation radar path integrated attenuation on interannual variations of tropical oceanic rainfall

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Effects of uncertainty in trmm precipitation radar path integrated attenuation on interannual variations of tropical oceanic rainfall

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kummerow, Christian D. Robertson, Franklin R. Fitzjarrald, Dan E.
Copyright Year	2002
Description	Considerable uncertainty surrounds the issue of whether precipitation over the tropical oceans (30 deg N/S) systematically changes with interannual sea-surface temperature (SST) anomalies that accompany El Nino (warm) and La Nina (cold) events. Time series of rainfall estimates from the Tropical Rainfall Measuring Mission (TRMM Precipitation Radar (PR) over the tropical oceans show marked differences with estimates from two TRMM Microwave Imager (TMI) passive microwave algorithms. We show that path-integrated attenuation derived from the effects of precipitation on the radar return from the ocean surface exhibits interannual variability that agrees closely with the TMI time series. Further analysis of the frequency distribution of PR (2A25 product) rain rates suggests that the algorithm incorporates the attenuation measurement in a very conservative fashion so as to optimize the instantaneous rain rates. Such an optimization appears to come at the expense of monitoring interannual climate variability.
File Size	501374
Page Count	7
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20020091870
Archival Resource Key	ark:/13960/t7sn54t35
Language	English
Publisher Date	2002-01-01
Access Restriction	Open
Subject Keyword	Meteorology And Climatology Meteorological Radar Tropical Regions Oceans Microwave Imagery Time Series Analysis Trmm Satellite Marine Meteorology El Nino Frequency Distribution Sea Surface Temperature Precipitation Meteorology Ocean Surface Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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