Active and Passive Radiative Transfer Simulations for GPM-Related Field Campaigns
| Autor: | Xioawen Li, Adrian M. Loftus, Craig Pelissier, Rachael Kroodsma, Kwo-Sen Kuo, S. Joseph Munchak, Ian S. Adams, Thomas Clune |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Radiometer 010504 meteorology & atmospheric sciences 010505 oceanography Scattering Polarization (waves) 01 natural sciences law.invention Computational physics Atmospheric radiative transfer codes law Brightness temperature Radiative transfer Radar Graupel 0105 earth and related environmental sciences |
| Zdroj: | IGARSS |
| Popis: | Using a three-dimensional radiative transfer model combined with cloud-resolving model output, we simulate active and passive sensor observations of clouds and precipitaiton. This combination of tools allows us to diagnose the contributions of various hydrometeor types. Radar multiple scattering is most closely associated with the presence of graupel. At W-band, massive amounts multiple scattering in deep convection can decorrelate the reflectivity profile from the vertical structure, but for less intense events, multiple scattering could be a useful indicator of riming. For passive sensors, polarization differences at 166 GHz indicate the presence of horizontally-aligned frozen particles with pronounced aspect ratios, while high concentrations of more isotropic aggregates and graupel dampen the polarization difference while also contributing to the lowest brightness temperature depressions. The insights into remote sensing measurements will facilitate the development of improved algorithms and advanced sensors. |
| Databáze: | OpenAIRE |
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