NDLI: Estimation of precipitation and latent heating distributions in tropical convection from a combined analysis of passive microwave and spaceborne radar observations.

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Estimation of precipitation and latent heating distributions in tropical convection from a combined analysis of passive microwave and spaceborne radar observations.

Content Provider	CiteSeerX
Author	Jcet/umbc, William S. Olson Gest/umbc, Mircea Grecu Gest/umbc, Chung-Lin Shie Nasa/gsfc, Scott A. Braun
Abstract	An improved method for evaluating consistent precipitation and latent heating distributions based upon satellite passive microwave radiometer observations is presented. The method is “trained ” using coincident passive microwave radiometer and spaceborne radar observations- a variational procedure is used to optimize the intercept, No*, of the normalized precipitation size distribution, as well as the mean density, ρice, of ice-phase precipitation in each retrieved vertical profile. These parameters are optimized to obtain simultaneous consistency between the solution profile’s path integrated attenuation and radiance normalized polarizations and those drawn from PR surface backscatter and TMI radiance observations, respectively. The optimization is accomplished by minimizing the functional, F, at right. Using the procedure outlined above, vertical profiles of cloud and precipitation are estimated at every PR footprint location at roughly the horizontal and vertical resolution of the PR data (4.3 km / 0.25 km). This procedure has been applied to all PR/TMI swaths in one-month periods to obtain a very general sampling of precipitation structures in the tropics and subtropics. A training set based upon one month of these data may contain ~1 million precipitation profiles. TMI PR PR profiles
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Access Restriction	Open
Subject Keyword	Spaceborne Radar Observation Latent Heating Distribution Combined Analysis Passive Microwave Tropical Convection Vertical Profile Mean Density Normalized Precipitation Size Distribution Pr Surface Backscatter Solution Profile Path General Sampling Variational Procedure Radiance Normalized Polarization Simultaneous Consistency Coincident Passive Microwave Radiometer Tmi Pr Pr Profile Precipitation Profile Pr Tmi Swath Satellite Passive Microwave Radiometer Observation Pr Data One-month Period Pr Footprint Location Training Set Vertical Resolution Improved Method Consistent Precipitation Retrieved Vertical Profile Tmi Radiance Observation Precipitation Structure Ice-phase Precipitation
Content Type	Text

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