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Showing 1 to 20 of 32 for “"net radiation"”.
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Net Radiation, Visible Radiation, Apparent Photosynthesis and Evapotranspiration in Soybean Canopies
Made available in DSpace on 2014-12-10T17:12:29Z (GMT). No. of bitstreams: 1 6607814.pdf: 2573138 bytes, checksum: 41b1929b0390a6e7448a705f8d6f4c75 (MD5) Previous issue date: 1966
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Satellite-based estimates of net radiation and modeling the role of topography and vegetation on inter-annual hydro-climatology
… change related to hydrologic cycle. The Surface Radiation Budget (SRB) is an important component in the study of land surface processes. Existing SRB retrieval algorithms generally suffer from two major shortcomings: difficulty in dealing with cloudy sky conditions and reliance on study-site …
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Stream temperature dynamics following riparian wildfire : effects of stream-subsurface interactions and standing dead trees
… stream-subsurface water interactions and (3) the net radiation dynamics associated with standing dead riparian vegetation. Stream temperature, riparian microclimate, and hydrology were characterized for a 1.5 km reach of Fishtrap Creek, located north of Kamloops, British Columbia. Within-reach air …
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The use of satellite remote sensing to determine land water runoff
… land water runoff from satellite measurements of net radiation at the top of the atmosphere by invoking columnar atmospheric water and energy balance. Land water runoff is an important parameter in many areas including management of human water use and validation of climate models. Energy …
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Climate and pro-glacial discharge interactions in the Pakitsoq region of Western Greenland.
… the spring and summer due to the variations in net radiation and air temperatures but also in snow cover, rainfall and the evolution of the glacier’s hydrological system. The recorded time series of net radiation, air temperature and discharge was broken down into annual, seasonal and monthly …
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Surface conditions effect on energy exchange at the soil surface
… surface roughness effects on soil reflectance, net radiation, and the partitioning of net radiation;Soil thermal properties were examined after planting in the row zone for three common management systems: moldboard plow, chisel plow, and no-tillage. Soil volumetric heat capacity was not …
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Transpiration and the water relations of barley
… was found to have a linear dependence on net radiation, leaf water potential and vapour pressure deficit, increasing with the first two and decreasing with the last. An equation was found which predicted stomatal conductance from these three variables. When this was used in conjunction …
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Estimation of catchment flood potential using satellite data
… the surface.I n combination with AVHRR derived net radiation, the evapotranspiration,in turn, is used to calculate the sensible heat flux. The sensible heat flux is used in a simple convective model to estimate the height of the atmospheric boundary layer and the velocity of an ascending parcel …
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Investigation of covariability between energy fluxes and CO2 exchange over a semi-arid savanna (Kruger National Park) by Eddie Covariance Technique
… studying the connection between energy flows and Net Ecosystem Exchange (NEE) at the semi-arid savanna of Kruger National Park to gain a more detailed and accurate understanding of these processes, especially in semi-arid savannas that are susceptible to changes in environmental factors. By …
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Análise da variabilidade espaço-temporal da cobertura do solo e de parâmetros biofísicos na bacia experimental de São João do Cariri - PB.
… The mean values of Ts increased by 2 °C, for net radiation (Rn) the means ranged from 635.3 W/m² and 817.8 W/m², as evapotranspiration showed a decrease in their average value, from 4.39 mm/day to 1.96 mm/day. It is concluded that the methodology used in the determination of Ts, Rn and …
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Hydrologic Characteristics of Summer Stream Temperatures in Little Creek and Scotts Creek at the Swanton Pacific Ranch
… water interactions, along with incoming net radiation, played a substantial role in how heat was transferred through each system. Solar radiation exposure from stream shading and modeled groundwater inflows were important explanatory variables in the magnitude and spatial distribution of …
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Application of Wavelet Analysis for Examining Climate and Meltwater Runoff in the Paakitsoq Region, West Greenland
… aims to investigate the relationship between net shortwave radiation, air temperature and proglacial discharge using wavelet analysis in order to establish the variability of discharge on short (<1-3 days) timescales and how this is driven by meteorological factors on similar (<1-4 days) …
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Ablation on the ice cap of King George Island (Antarctica) : an approach from field measurements, modelling and remote sensing
… evaluated. Generally, ablation was triggered by net radiation followed by sensible and latent heat fluxes. A distinct influence of the prevailing synoptic circulation on the energy exchange could be determined. Highest ablation rates were recorded during northerly to northwesterly advection of …
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The sea surface heat balance in the Benguela upwelling region
… from Alexander Bay and Cape Town. An average net heat gain of 227 W.m⁻² was received over the eight days of the field study. The presence of cold water determined that latent heat loss by the sea surface was small, while the sensible heat flux represented a small gain by the sea. These two …
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Prediction and Measurement of Thermal Exchanges within Pyranometers
… radiometer that is widely used in global networks to monitor solar irradiances at the earth's surface. Within the instrument, a blackened surface is in intimate thermal contact with the hot junction of a thermopile. The cold junction of the thermopile communicates thermally with the large …
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Characterization of the impacts of the physiological response of vegetation to increasing levels of atmospheric carbon dioxide
… period, when evaporation is unlimited under high net radiation. The anomalous warming over the Murray-Darling Basin in 2002 was also investigated and was found to be unlikely caused by the physiological effect of CO2. The robustness of the results and their general agreement with the literature …
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Modellierung von Flächendatensätzen der Oberflächentemperatur, Strahlungsbilanz und Kaltluftproduktion in windschwachen Strahlungsnächten
… the spatial distribution of surface temperature, net radiation and cold air production obtained on cloudless nights. The method is tested on the region of the Regio-Klima-Projekt (REKLIP) which covers the Upper Rhine Valley from Basle to Karlsruhe and the adjacent mountains. <br>The approach for …
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Energy controls on diurnal snowmelt events and stream recharge, Lost Horse Canyon, Bitterroot Mountains, MT
… compare high frequency (15-minute) atmospheric radiation and its influence on the timing and magnitude of both water table and stream stage fluctuations. We analyze net radiation over the snowpack to approximate the energy state of the snowpack and relate it to hillslope hydrologic response and …
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Energy controls on diurnal snowmelt events and stream recharge, Lost Horse Canyon, Bitterroot Mountains, MT
… compare high frequency (15-minute) atmospheric radiation and its influence on the timing and magnitude of both water table and stream stage fluctuations. We analyze net radiation over the snowpack to approximate the energy state of the snowpack and relate it to hillslope hydrologic response and …
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An Assessment of Radiative, Energy and Carbon Dioxide Fluxes over Three Urban Locations in Dublin
… serving to alter surface-atmosphere exchanges of radiation, turbulent heat and carbon dioxide. To date very few measurements of these exchanges are undertaken in the urban domain despite the growing number of urban dwellers worldwide. This thesis presents the first attempt at investigating these …
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