نتایج جستجو برای: net radiation
تعداد نتایج: 334266 فیلتر نتایج به سال:
The authors evaluate 23 coupled atmosphere–ocean general circulation models from phase 5 of CMIP (CMIP5) in terms of their ability to simulate the observed climatological mean energy budget of theAntarctic atmosphere. While the models are shown to capture the gross features of the energy budget well [e.g., the observed two-way balance between the top-of-atmosphere (TOA) net radiation and horizo...
This paper presents the results obtained by analysing a set of measurements of surface radiation balance components at a semi-arid location in SE Spain. The relationships between net and surface shortwave radiation were explored by using 38 months of 5 min surface radiation. The study area is covered by sparse clumped shrub-land of different species, although close to the radiometric station Re...
Changes in surface net radiation Rn control the earth’s climate, the hydrological cycle, and plant photosynthesis. However, Rn is not readily available. This study develops a method to estimate surface daytime Rn from solar shortwave radiation measurements as well as conventional meteorological observations (or satellite retrievals) including daily minimum temperature, daily temperature range, ...
The diurnal variation of net ecosystem exchange (NEE) showed an unusual pattern at the Blodgett Forest Ameriflux site, with late afternoon NEE lower than early morning (indicating more uptake), while air temperature and atmospheric vapor pressure deficit were much higher. To investigate processes influencing this pattern, NEE was compared to several environmental variables during summer 2002. U...
Our aim is to provide an observational reference for the evaluation of the surface and boundary layer parameterizations used in large-scale models using the remarkable long-term Canadian Prairie hourly dataset. First we use shortwave and longwave data from the Baseline Surface Radiation Network (BSRN) station at Bratt’s Lake, Saskatchewan, and clear sky radiative fluxes from ERA-Interim, to sho...
This study focused on surface radiation budget, one of the essential factors for understanding climate change. Arctic budget was summarized and explained using a satellite product, Clouds Earth’s Radiant Energy System (CERES) Balanced Filled (EBAF), reanalysis data, ERA5. Net records indicated an increasing trend only in ERA5, with EBAF indicating decreasing Circle (AC; poleward from 65°N) 2000...
Are investigated climate change impacts on glacier melt discharge in the tropical Andes given its relevance to water resources. The means are the investigation of net radiation and potential glacier melt trends. For such purposes is assessed the investigation of the Surface and Energy Balance algorithm (SEBAL) performance, and is carried a practical application to establish the relevance of the...
Understanding energy and water balance processes in the Sandhills is crucial to assess the land-atmosphere feedback effects. The Sandhills located in western Nebraska covers a vast grassland ecosystem with limited variability in vegetation and soil. However, the combined effect of topography, land cover and micrometeorology by subjecting the land surface to various disturbances and treatments i...
Recent results of the KASCADE air shower experiment are presented in order to shed some light on the astrophysics of cosmic rays in the region of the knee in the energy spectrum. The results include investigations of high-energy interactions in the atmosphere, the analysis of the arrival directions of cosmic rays, the determination of the mean logarithmic mass, and the unfolding of energy spect...
We formulate and describe a visual compactification of the Teichmüller space by Weil-Petersson geodesic rays emanating from a point X. We focus on analogies with Bers’s compactification: due to non-completeness, finite rays correspond to cusps, and such cusps are dense in the visual sphere. By analogy with a result of Kerckhoff and Thurston, we show the natural action of the mapping class group...
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