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Evaluation of Precipitation Simulated by Seven SCMs against the ARM Observations at the SGP SiteThis study evaluates the performances of seven single-column models (SCMs) by comparing simulated surface precipitation with observations at the Atmospheric Radiation Measurement Program Southern Great Plains (SGP) site from January 1999 to December 2001. Results show that although most SCMs can reproduce the observed precipitation reasonably well, there are significant and interesting differences in their details. In the cold season, the model-observation differences in the frequency and mean intensity of rain events tend to compensate each other for most SCMs. In the warm season, most SCMs produce more rain events in daytime than in nighttime, whereas the observations have more rain events in nighttime. The mean intensities of rain events in these SCMs are much stronger in daytime, but weaker in nighttime, than the observations. The higher frequency of rain events during warm-season daytime in most SCMs is related to the fact that most SCMs produce a spurious precipitation peak around the regime of weak vertical motions but rich in moisture content. The models also show distinct biases between nighttime and daytime in simulating significant rain events. In nighttime, all the SCMs have a lower frequency of moderate-to-strong rain events than the observations for both seasons. In daytime, most SCMs have a higher frequency of moderate-to-strong rain events than the observations, especially in the warm season. Further analysis reveals distinct meteorological backgrounds for large underestimation and overestimation events. The former occur in the strong ascending regimes with negative low-level horizontal heat and moisture advection, whereas the latter occur in the weak or moderate ascending regimes with positive low-level horizontal heat and moisture advection.
Document ID
20150019764
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Song, Hua
(Brookhaven National Lab. Upton, NY, United States)
Lin, Wuyin
(Brookhaven National Lab. Upton, NY, United States)
Lin, Yanluan
(National Oceanic and Atmospheric Administration Princeton, NJ, United States)
Wolf, Audrey B.
(Columbia Univ. New York, NY, United States)
Neggers, Roel
(Royal Netherlands Meteorological Inst. De Bilt, Netherlands)
Donner, Leo J.
(National Oceanic and Atmospheric Administration Princeton, NJ, United States)
Del Genio, Anthony D.
(NASA Goddard Inst. for Space Studies New York, NY, United States)
Liu, Yangang
(Brookhaven National Lab. Upton, NY, United States)
Date Acquired
October 27, 2015
Publication Date
August 1, 2013
Publication Information
Publication: Journal of Climate
Publisher: American Meterological Society
Volume: 26
Issue: 15
Subject Category
Meteorology And Climatology
Report/Patent Number
GSFC-E-DAA-TN27098
Funding Number(s)
CONTRACT_GRANT: NNX14AB99A
Distribution Limits
Public
Copyright
Other
Keywords
Model comparison
Model/evaluation/performance
Single column models

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