نتایج جستجو برای: atmospheric transport

تعداد نتایج: 345670  

2004
K. M. Hansen

The Danish Eulerian Hemispheric Model (DEHM) is a 3-D dynamical atmospheric transport model originally developed to describe the atmospheric transport of sulphur into the Arctic. A new version of the model, DEHMPOP, developed to study the atmospheric transport and environmental fate of persistent organic pollutants (POPs) is presented. During environmental cycling, POPs can be deposited and re-...

2004
K. M. Hansen

The Danish Eulerian Hemispheric Model (DEHM) is a 3-D dynamical atmospheric transport model originally developed to describe the atmospheric transport of sulphur into the Arctic. A new version of the model, DEHM-POP, developed to study the atmospheric transport and environmental fate of persistent organic pollutants (POPs) 5 is presented. During environmental cycling, POPs can be deposited and ...

2014
Sarah B. Das Kristopher B. Karnauskas Matthew J. Evans Karen E. Frey Ian Joughin Eric J. Steig Joseph R. McConnell Brooke Medley ALISON S. CRISCITIELLO SARAH B. DAS KRISTOPHER B. KARNAUSKAS MATTHEW J. EVANS KAREN E. FREY IAN JOUGHIN ERIC J. STEIG JOSEPH R. MCCONNELL BROOKE MEDLEY

The climate of West Antarctica is strongly influenced by remote forcing from the tropical Pacific. For example, recent surface warming over West Antarctica reflects atmospheric circulation changes over the Amundsen Sea, driven by an atmospheric Rossby wave response to tropical sea surface temperature (SST) anomalies. Here, it is demonstrated that tropical Pacific SST anomalies also influence th...

2002
R. J. Dargaville M. Heimann A. D. McGuire I. C. Prentice D. W. Kicklighter F. Joos J. S. Clein G. Esser J. Foley J. Kaplan R. A. Meier J. M. Melillo B. Moore N. Ramankutty T. Reichenau A. Schloss S. Sitch H. Tian L. J. Williams U. Wittenberg

[1] An atmospheric transport model and observations of atmospheric CO2 are used to evaluate the performance of four Terrestrial Carbon Models (TCMs) in simulating the seasonal dynamics and interannual variability of atmospheric CO2 between 1980 and 1991. The TCMs were forced with time varying atmospheric CO2 concentrations, climate, and land use to simulate the net exchange of carbon between th...

2000
Scott Denning Peter J. Rayner Rachel M. Law

2 Overview The goal of Atmospheric Tracer Transport Model Intercomparison Project (TransCom) is to quantify and diagnose the uncertainty in inversion calculations of the global carbon budget that result from errors in the simulated transport. The specific objectives of the TransCom project are (1) quantify the degree of uncertainty in current carbon budget estimates that results from uncertaint...

2003
P. B. Rhines S. Häkkinen

It has long been believed that the transport of heat northward by the Atlantic Ocean circulation is of importance to mean/seasonal atmosphere-ocean climate, and with less certainty, to decadal climate variability. Indeed, ASOF is founded on the idea that oceanic freshwater and heat transports are both crucial to climate. The importance of ocean circulation has been challenged Clement and Cane (...

2004
Benjamin R. Lintner Alice B. Gilliland Inez Y. Fung

[1] Interannual variations of tropical convection impact atmospheric circulation and influence year-to-year variations of the transport of trace constituents in the troposphere. This study examines how two modes of convective variability, anomalous intensification and meridional displacement of centers of tropical convection, impact interhemispheric transport (IHT) interannual variability. Two ...

Journal: :Eos, Transactions American Geophysical Union 2011

2006
Claire E. Newman Stephen R. Lewis

A dust transport scheme has been developed for a general circulation model of the Martian atmosphere. This enables radiatively active dust transport, with the atmospheric state responding to changes in the dust distribution via atmospheric heating, as well as dust transport being determined by atmospheric conditions. The scheme includes dust lifting, advection by model winds, atmospheric mixing...

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