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RISA Coupled Land Surface–Boundary Layer Model and Its Adjoint
Publisher: American Meteorological Society
Abstract: In this paper, a simple coupled land surface?boundary layer model and its adjoint are presented. The primary goal is to demonstrate the capabilities of the adjoint model as a general tool for sensitivity analysis and data ...
Feedback between the Land Surface Energy Balance and Atmospheric Boundary Layer Diagnosed through a Model and Its Adjoint
Publisher: American Meteorological Society
Abstract: In this paper, the differences in (daytime) sensitivity of surface turbulent fluxes to states and parameters for a coupled land?atmospheric boundary layer model in coupled and uncoupled modes are investigated using an ...
Rainfall Variability in Equatorial and Southern Africa: Relationships with Sea Surface Temperatures along the Southwestern Coast of Africa
Publisher: American Meteorological Society
Abstract: This article presents the results of an analysis of sea surface temperature (SST) fluctuations in the upwelling region along the Benguela coat and its relationship to rainfall variability both along the coast and throughout ...
Asymmetric Recovery from Wet versus Dry Soil Moisture Anomalies
Publisher: American Meteorological Society
Abstract: The energy and moisture state in the soil and new-surface atmosphere evolve due to fluxes that are themselves a function of these states. Because the soil moisture and temperature are negatively correlated (dry warm or ...
Variational Assimilation of Radiometric Surface Temperature and Reference-Level Micrometeorology into a Model of the Atmospheric Boundary Layer and Land Surface
Publisher: American Meteorological Society
Abstract: Data assimilation provides a useful framework that allows us to combine measurements and models, by appropriately weighting the sources of error in both, to produce a statistically optimal and dynamically consistent estimate ...
Terrain and Multiple-Scale Interactions as Factors in Generating Extreme Precipitation Events
Publisher: American Meteorological Society
Abstract: The Mediterranean region is often affected by flooding and landslides due to heavy precipitation events. These events have been the subject of specific interest because they represent complex interaction of synoptic-scale ...
Evolution of Atmospheric Response to Early-Season Eurasian Snow Cover Anomalies
Publisher: American Meteorological Society
Abstract: Recently it has been shown that the area extent of Eurasian snow cover during September?October?November (SON) and the principal component of the leading mode of extratropical Northern Hemisphere (NH) climate variability ...
Modeled Northern Hemisphere Winter Climate Response to Realistic Siberian Snow Anomalies
Publisher: American Meteorological Society
Abstract: Wintertime Northern Hemisphere climate variability is investigated using large-ensemble (20) numerical GCM simulations. Control simulations with climatological surface (land and ocean) conditions indicate that the Arctic ...
Orographic Constraints on a Modeled Siberian Snow–Tropospheric–Stratospheric Teleconnection Pathway
Publisher: American Meteorological Society
Abstract: Previous modeling studies have identified a teleconnection pathway linking observation-based early season Siberian snow perturbations to a modulation of the winter Arctic Oscillation (AO) mode. In this study, the key role ...
Central U.S. Atmospheric Water and Energy Budgets Adjusted for Diurnal Sampling Biases Using Top-of-Atmosphere Radiation
Publisher: American Meteorological Society
Abstract: The water and energy budgets of the atmospheric column over the Mississippi River basin are estimated using 18 yr (1976?93) of twice-daily radiosonde observations, top-of-atmosphere net radiation estimates from the Earth ...