نتایج جستجو برای: surface fluxes
تعداد نتایج: 658607 فیلتر نتایج به سال:
The study presented here attempts to quantify the significance of southerly water vapor fluxes on precipitation occurring in the eastern Fertile Crescent region. The water vapor fluxes were investigated at high temporal and spatial resolution by using a Regional Climate Model [fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5)–Noah land surface model] to downscale the NCE...
[1] Thinning is a routine forest management operation that changes tree spacing, number, and size distribution and affects the material flows between vegetation and the atmosphere. Here, using direct micrometeorological ecosystem-scale measurements, we show that in a boreal pine forest, thinning decreases the deposition velocities of fine particles as expected but does not reduce the carbon sin...
Coupled land surface and terrestrial ecosystem models are used to simulate energy and carbon fluxes over winter wheat at the Ponca City, Oklahoma, Ameriflux site. The terrestrial ecosystem model consists of photosynthesis and respiration (autotrophic and heterotrophic) sub-modules, which uses canopy temperature, soil moisture, and soil temperature simulated by the land surface scheme. The photo...
A four-box model of the tropical climate is used to assess its sensitivity to changes in the relative area of the moist and dry regions and to radiative perturbations. The feedbacks modulating this sensitivity are analyzed , particularly the dynamical feedbacks associated with the surface fluxes. The link between the large-scale circulation and these fluxes is found to play a crucial role in th...
• it stores and releases large quantities of heat, freshwater and soluble gases, • heat, freshwater and gas releases are sometimes substantially separated in space and time from their point of storage, due to ocean dynamics and mixing • freshwater and gas fluxes are determined partly by direct and indirect effects of ocean surface temperatures • carbon fluxes, storage and natural sequestration ...
Purpose The purpose of this report is to respond to a JSC request to WOAP to develop an outline of an action plan on surface fluxes and a timetable for its full development in collaboration with WCRP sub-programs. All relevant programs at the last JSC meeting (GEWEX, CLIVAR, CLIC, SOLAS, WGNE and GCOS Panels) expressed interest in the process and, together with a representative of IGBP and othe...
E. Nemitz, M. A. Sutton, G. P. Wyers, R. P. Otjes, M. G. Mennen, E. M. van Putten, and M. W. Gallagher Atmospheric Sciences, Centre for Ecology and Hydrology (CEH), Edinburgh Research Station, Bush Estate, Penicuik, Midlothian, EH26 0QB, United Kingdom Energy research Centre of the Netherlands (ECN), Postbus 1, 1755 Petten ZG, The Netherlands National Institute of Public Health and Environment ...
SURFEX is a new externalized land and ocean surface platform that describes the surface fluxes and the evolution of four types of surfaces: nature, town, inland water and ocean. It is mostly based on pre-existing, well-validated scientific models that are continuously improved. The motivation for the building of SURFEX is to use strictly identical scientific models in a high range of applicatio...
Episodic events like hurricanes, storms and frontal- and eddy-driven upwelling can alter the partial pressure of CO(2) (pCO(2)) at the sea surface by entraining subsurface waters into the surface mixed layer (ML) of the ocean. Since pCO(2) is a function of total dissolved inorganic carbon (DIC), temperature (T), salinity and alkalinity, it responds to the combined impacts of physical, chemical ...
Introduction Conclusions References
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