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Resolving the Precipitation Microphysical Variability Induced by Orographic Enhancement in Complex Terrain Over the San Francisco Bay Area
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2021
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Source: IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, Waikoloa, HI, USA, 2020, pp. 5415-5418
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Journal Title:IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium
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Description:Radar quantitative precipitation estimation (QPE) and forecast (QPF) over the coastal mountain area in Northern California can be very challenging due to the complex precipitation microphysics induced by land-ocean interaction in the coastal regions and orographic enhancement in the mountainous areas. A number of previous studies have documented the precipitation characteristics in this complex domain using data collected from remote sensors such as S-band profiling radar (S-PROF) and/or in situ measurements of raindrop size distributions (DSD) at the surface. This study extends the earlier work by including new DSD measurements both from the valley (Santa Rosa) and the mountain (Middletown), to characterize the orographic enhancement of precipitation and diagnose the bulk microphysical properties of rainfall. Two major rainfall types in this area, namely, non-bright band and bright band rain, are identified based on the observations from S-PROF. Several DSD and rainfall parameters are derived from the measured raindrop spectra, and the microphysical characteristics are investigated for different rainfall types and terrains (i.e., valley vs mountain).
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Source:IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, Waikoloa, HI, USA, 2020, pp. 5415-5418
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Rights Information:Accepted Manuscript
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Compliance:Submitted
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