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RISTemperature Profiles and Lapse Rate Climatology in Altostratus and Nimbostratus Clouds Derived from GPS RO Data
Publisher: American Meteorological Society
Abstract: onstellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) radio occultation (RO) refractivity profiles in altostratus and nimbostratus clouds from 2007 to 2010 are first identified based on collocated ...
Toward Developing an Objective 4DVAR BDA Scheme for Hurricane Initialization Based on TPC Observed Parameters
Publisher: American Meteorological Society
Abstract: This study aims to make the four-dimensional variational (4DVAR) bogus data assimilation (BDA) scheme for hurricane initialization first proposed by Zou and Xiao more objective. The BDA scheme consists of two steps: (i) ...
Application of Principal Component Analysis to CHAMP Radio Occultation Data for Quality Control and a Diagnostic Study
Publisher: American Meteorological Society
Abstract: A principal component analysis (PCA) method is applied to Challenging Minisatellite Payload (CHAMP) level-2 radio occultation (RO) observations and the corresponding global analyses from the National Centers for Environmental ...
Test of a Modified Infrared-Only ABI Cloud Mask Algorithm for AHI Radiance Observations
Publisher: American Meteorological Society
Abstract: ssimilation of infrared channel radiances from geostationary imagers requires an algorithm that can separate cloudy radiances from clear-sky ones. An infrared-only cloud mask (CM) algorithm has been developed using the ...
The Impact of NORPEX Targeted Dropsondes on the Analysis and 2–3-Day Forecasts of a Landfalling Pacific Winter Storm Using NCEP 3DVAR and 4DVAR Systems
Publisher: American Meteorological Society
Abstract: During the North Pacific Experiment (NORPEX), both the Navy Operational Global Atmospheric Prediction System and the National Centers for Environmental Prediction (NCEP) operational forecast systems found a 48-h forecast ...
Analysis and Mitigation of Striping Noise in Two Water Vapor Sounding Channels of Global Precipitation Measurement (GPM) Microwave Imager
Publisher: American Meteorological Society
Abstract: AbstractThe Global Precipitation Measurement (GPM) Microwave Imager (GMI) plays an important role in monitoring global precipitation. In this study, an along-track striping noise is found in GMI observations of brightness ...
Preliminary Steps in Assimilating SSM/I Brightness Temperatures in a Hurricane Prediction Scheme
Publisher: American Meteorological Society
Abstract: Different aspects of assimilating satellite-observed microwave radiances (brightness temperatures) into the initial vortex of a hurricane prediction model are discussed. The tangent linear and adjoint observation operators ...
Comparison of Tropical Cyclone Center Positions Determined from Satellite Observations at Infrared and Microwave Frequencies
Publisher: American Meteorological Society
Rainfall Assimilation through an Optimal Control of Initial and Boundary Conditions in a Limited-Area Mesoscale Model
Publisher: American Meteorological Society
Abstract: To assess the impact of rainfall observations on short-range forecasts of precipitation, and to improve our understanding of the physical processes responsible for the development of a mesoscale convective system (MCS) ...
Time Zone Dependence of Diurnal Cycle Errors in Surface Temperature Analyses
Publisher: American Meteorological Society
Abstract: Surface temperatures from both the NCEP analysis and ECMWF Re-Analysis (ERA-Interim) in January 2008 over the Africa?Eurasian region were compared with surface station measurements to study analysis errors in the diurnal ...