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RISUsing Model Cloud Information to Reassign Low-Level Atmospheric Motion Vectors in the ECMWF Assimilation System
Publisher: American Meteorological Society
Using Model Cloud Information to Reassign Low-Level Atmospheric Motion Vectors in the ECMWF Assimilation System
Publisher: American Meteorological Society
Atmospheric Motion Vectors from Model Simulations. Part II: Interpretation as Spatial and Vertical Averages of Wind and Role of Clouds
Publisher: American Meteorological Society
Abstract: his is the second part of a two-part paper whose main objective is to improve the characterization of atmospheric motion vectors (AMVs) and their errors to guide developments in the use of AMVs in numerical weather prediction ...
Mesoscale Rainfall Forecasts over New Zealand during SALPEX96: Characterization and Sensitivity Studies
Publisher: American Meteorological Society
Abstract: Rainfall diagnostics from 48-h, 20-km mesoscale runs of the RAMS model configured for the New Zealand region have been characterized and compared to forecasts from the U.K. Meteorological Office global model with a view ...
Impact of MODIS Polar Winds in ECMWF's 4DVAR Data Assimilation System
Publisher: American Meteorological Society
Abstract: This study investigates the impact of a new satellite-derived wind product over the polar regions on ECMWF's global four-dimensional variational assimilation system. The winds are derived at the University of Wisconsin? ...
Eclipse Anomalies in Atmospheric Motion Vectors Derived from Meteosat Imagery and Their Implications on Data Assimilation
Publisher: American Meteorological Society
Abstract: This study examines atmospheric motion vectors derived by tracking features in image sequences from Meteosat for anomalies during the second satellite eclipse period of 2001. During eclipse periods (March?April; ...
Superobbing and Thinning Scales for All-Sky Humidity Sounder Assimilation
Publisher: American Meteorological Society
Characterizing AMV Height-Assignment Error by Comparing Best-Fit Pressure Statistics from the Met Office and ECMWF Data Assimilation Systems
Publisher: American Meteorological Society
Abstract: o ensure realistic use of atmospheric motion vector (AMV) observations in data assimilation, the error characteristics of the observation type need to be known and carefully taken into account. Assigning a height to the ...
The Spatial Structure of Observation Errors in Atmospheric Motion Vectors from Geostationary Satellite Data
Publisher: American Meteorological Society
Abstract: This study investigates and quantifies in detail the spatial correlations of random errors in atmospheric motion vectors (AMVs) derived by tracking structures in imagery from geostationary satellites. A good specification ...
Characterizing the FY-3A Microwave Temperature Sounder Using the ECMWF Model
Publisher: American Meteorological Society
Abstract: hina?s Feng-Yun-3A (FY-3A), launched in May 2008, is the first in a series of seven polar-orbiting meteorological satellites planned for the next decade by China. The FY-3 series is set to become an important data source ...