Evaluation of Forward Operators for Polarimetric Radars Aiming for Data Assimilation
نویسندگان
چکیده
منابع مشابه
Improved Polarimetric Calibration for Atmospheric Radars
Polarization properties of radar waves that are scattered from atmospheric objects are of great interest in meteorological studies. However, polarimetric radar measurements are often not sufficiently accurate for retrieving physical properties of targets. To compensate for errors, radar polarimetric calibration is applied. Typical calibrations are performed based on measurements of point target...
متن کاملa new approach to credibility premium for zero-inflated poisson models for panel data
هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...
15 صفحه اولAssimilation of Simulated Polarimetric Radar Data for a Convective Storm Using Ensemble Kalman Filter. Part I: Observation Operators for Reflectivity and Polarimetric Variables
i Abstract A radar simulator for polarimetric radar variables including reflectivities at horizontal and vertical polarizations, the differential reflectivity and the specific differential phase, has been developed. This simulator serves as a testbed for developing and testing forward observation operators of polarimetric radar variables that are needed when directly assimilating these variable...
متن کاملAssimilation of Simulated Polarimetric Radar Data for a Convective Storm Using the Ensemble Kalman Filter. Part I: Observation Operators for Reflectivity and Polarimetric Variables
A radar simulator for polarimetric radar variables, including reflectivities at horizontal and vertical polarizations, the differential reflectivity, and the specific differential phase, has been developed. This simulator serves as a test bed for developing and testing forward observation operators of polarimetric radar variables that are needed when directly assimilating these variables into s...
متن کاملHydrometeor classification methodology for C-band polarimetric radars
Classification of hydrometeors has a wide variety of applications such as validation of cloud microphysical models, choice of algorithm for precipitation estimation and evaluation of assumptions made in the precipitation retrieval processes as well as validation of space borne observations. Dual-polarization radar measurements are sensitive to hydrometeors properties such as size, shape, phase ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Meteorological Society of Japan. Ser. II
سال: 2018
ISSN: 0026-1165,2186-9057
DOI: 10.2151/jmsj.2018-017