TRMM Observations of Polarization Difference in 85 GHz: Information About Hydrometeors and Rain Rate - Couverture souple

Prabhakara, C

Couverture souple

ISBN 10 : 1287280412 ISBN 13 : 9781287280415

Editeur : Bibliogov, 2013

Synopsis

Observations made by the Precipitation Radar (PR) and the Microwave Imager (TMI) radiometer on board the Tropical Rainfall Measuring Mission (TRMM) satellite help us to show the significance of the 85 GHz polarization difference, PD85, measured by TMI. Rain type, convective or stratiform, deduced from the PR allows us to infer that PD85 is generally positive in stratiform rain clouds, while PD85 can be markedly negative in deep convective rain clouds. Furthermore, PD85 increases in a gross manner as stratiform rain rate increases. On the contrary, in a crude fashion PD85 decreases as convective rain rate increases. From the observations of TMI and PR, we find that PD85 is a weak indicator of rain rate. Utilizing information from existing polarimetric radar studies, we infer that negative values of PD85 are likely associated with vertically-oriented small oblate or wet hail that are found in deep convective updrafts.

Détails de l'édition

• Éditeur: Bibliogov
• Date d'édition: 2013
• Langue: anglais
• ISBN 10: 1287280412
• ISBN 13: 9781287280415
• Reliure: Broché
• Nombre de pages: 36
• Coordonnées du fabricant: non disponible
• Personne responsable: non disponible