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RISLinearization of a Simple Moist Convection Scheme for Large-Scale NWP Models
Publisher: American Meteorological Society
Abstract: A simple Kuo-type convection scheme with an improved closure based on moist enthalpy accession (Kuo symmetric) has been linearized for the tangent-linear (TL) and adjoint (AD) versions of the Global Environmental Multiscale ...
Analysis of Soil Moisture from Near-Surface Parameters: A Feasibility Study
Publisher: American Meteorological Society
Abstract: The main purpose of this paper is to demonstrate that it is possible to estimate soil moisture from the evolution of atmospheric parameters near the surface (temperature and relative humidity) if a realistic surface transfer ...
Variational Retrieval of Temperature and Humidity Profiles from TRMM Precipitation Data
Publisher: American Meteorological Society
Abstract: This paper examines the performance of a one-dimensional variational (1DVAR) assimilation of Tropical Rainfall Measuring Mission satellite-derived surface rainfall rates from the Microwave Imager TMI. Temperature and ...
Jacobians of an Operational Prognostic Cloud Scheme
Publisher: American Meteorological Society
Abstract: A detailed examination of the Jacobian matrix of sensitivities of the prognostic cloud scheme operational at the European Centre for Medium-Range Weather Forecasts (ECMWF) is presented. These Jacobians exhibit sensitivities ...
Evaluation of the Jacobians of Infrared Radiation Models for Variational Data Assimilation
Publisher: American Meteorological Society
Abstract: In this paper, linearized versions of fast infrared radiative transfer schemes for variational data assimilation are studied. A neural network?based infrared broadband radiation model (NeuroFlux) is compared with the ...
A Study of Rainfall Interception Using a 1And Surface Parameterization for Mesoscale Meteorological Models
Publisher: American Meteorological Society
Abstract: Rainfall interception by vegetation canopies is studied using a parameterization of land surface Processes for mesoscale meteorological models. The interception scheme allows for a single vegetation canopy, and manages ...
Four-Dimensional Variational Assimilation of Total Column Water Vapor in Rainy Areas
Publisher: American Meteorological Society
Abstract: This paper studies the impact of assimilating rain-derived information in the European Centre for Medium-Range Weather Forecasts (ECMWF) four-dimensional variational (4DVAR) system. The approach is based on a one-dimensional ...
Coupling of Moist-Convective and Stratiform Precipitation Processes for Variational Data Assimilation
Publisher: American Meteorological Society
Abstract: Some problems posed by the coupling of moist-convective and stratiform precipitation processes for variational assimilation of precipitation-rate data are examined in a 1D-Var framework. Background-error statistics and ...
Adjoint Sensitivity of Surface Precipitation to Initial Conditions
Publisher: American Meteorological Society
Abstract: The adjoint version of the Global Environmental Multiscale model including a comprehensive package of simplified and linearized physical processes (large-scale condensation, deep moist convection, vertical diffusion, and ...
Daily Rainfall Detection and Estimation over Land Using Microwave Surface Emissivities
Publisher: American Meteorological Society
Abstract: urface emissivities computed at 89 GHz from AMSU-A, AMSU-B, and SSMI/S instruments are used to detect rain events and to estimate a daily precipitation rate over land surfaces. This new retrieval algorithm, called the ...