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Global Virga Precipitation Distribution Derived From Three Spaceborne Radars and Its Contribution to the False Radiometer Precipitation Detection
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2018
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Source: Geophysical Research Letters, 45(9), 4446-4455
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Journal Title:Geophysical Research Letters
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Description:This study first quantifies the virga precipitation occurrence percentage using three spaceborneradarobservations,includingTropicalRainfallMeasuringMissionPrecipitationRadar(PR), Global Precipitation Measurement dual-frequency PR (Ku-band PR/Ka-band PR [KuPR/KaPR]), and CloudSatCloudProfilingRadar(CPR).PRandKuPR/KaPRshowthatvirgaoccurrencepercentageisover30% in arid regions (e.g., Sahara desert and deserts of Australia). CPR reveals similar virga geospatial distribution.However,thevirgapercentagebasedonCPRisabouttwiceaslargeasthatbasedonPRand KuPR/KaPRduetobetterdetectionsensitivity.Resultsalsoshowthatthemajorityofthevirgacloudsarealtostratusandcirrus.Second,weinvestigatethevirgaprecipitationcontributiontothepassivemicrowave radiometer false precipitation detection. Virga precipitation accounts for as much as 50% (30%) of
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Source:Geophysical Research Letters, 45(9), 4446-4455
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DOI:
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ISSN:0094-8276
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Rights Information:Other
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Compliance:Library
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