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Monday, July 20, 2020 | History

3 edition of Evaluation of surface energy and radiation balance systems for FIFE found in the catalog.

Evaluation of surface energy and radiation balance systems for FIFE

Leo Fritschen

Evaluation of surface energy and radiation balance systems for FIFE

by Leo Fritschen

  • 330 Want to read
  • 15 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Surface energy.,
  • Radiation.

  • Edition Notes

    StatementLeo J. Fritschen and Ping Qian.
    SeriesNASA contractor report -- 183118., NASA contractor report -- NASA CR-183118.
    ContributionsQian, Ping., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15399432M

    An automation system is also designed and proposed for the realization of the newly introduced algorithm. The solar-combi system is computationally simulated, using annual time series of average hourly steps. A dimensioning optimization process is proposed, using as criterion the minimization of the thermal energy production levelized cost. The energy balance on the opaque surface is. Absorption depends on irradiation, which depends on emission from other surfaces including those far away from the observed surface. To make total radiative energy balance we must consider the entire enclosure, which is assumed to be closed.

      The bottom line is globally averaged it only takes about W/m^2 of radiative surface emission to allow 1 W/m^2 to leave the system, and the as the radiative forcing and surface temperature increases, the ratio of surface emitted power to incident solar power decreases, which means increases in forcing are being opposed by the system, which. A Review of Surface Energy Balance Models for Estimating Actual Evapotranspiration with Remote Sensing at High Spatiotemporal Resolution over Large Extents Scientific Investigations Report – U.S. Department of the Interior U.S. Geological Survey.

    Energy Balance. The net radiation heat flux of a surface can be found by writing the energy balance equation on the surface. The three radiation terms on the right hand side of the equation represent different types of radiation associated with a given surface. The first term is the emitted radiation. The second term is the reflected radiation. The second may be called the geometric-harmonic-mean equation preferred for high energy systems such as mercury, glass, metal oxides and graphite. Similar to the Geometric mean approach, the contact angle data with two liquids are required in order to obtain the polar and dispersion components of the solids surface energy.


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Evaluation of surface energy and radiation balance systems for FIFE by Leo Fritschen Download PDF EPUB FB2

E evaluation of surface energy and radiation balance systems for fife by 0 0 leo j. fritschen and ping qian professor and research assistant college of forest resources arlo, university of washington seattle, wa a report to forrest hall and peter camillo laboratory of terrestrial physics space and earth sciences directorate.

Get this from a library. Evaluation of surface energy and radiation balance systems for FIFE. [Leo J Fritschen; Ping Qian; United States. National Aeronautics and Space Administration.]. Get this from a library. Evaluation of surface energy and radiation balance systems on the Konza Prairie.

Part A. [Leo Fritschen; United States. National Aeronautics and Space Administration.]. Evaluation of surface energy and radiation balance systems for FIFE. (FIFE) conducted south of Manhattan, Kansas during the summer of The objectives were: to determine the effect of slope and aspect, throughout a growing season, on the magnitude of the surface energy balance fluxes as determined by the Energy Balance Method (EBM); to Author: Ping Qian and Leo J.

Fritschen. Evaluation of the Surface Energy Balance System J. van der Kwast et al. Title Page The Surface Energy Balance System (SEBS) is a single-source model, which esti- relative humidity, wind speed); (3) Radiation data (downward solar radiation, downward longwave radiation).

Su () extended the concept of SEBI and developed the Surface Energy Balance System (SEBS). It uses dynamic model for thermal roughness (Su et al. ), the Bulk Atmospheric Similarity (BAS.

The energy balance at Earth's land surface requires that the energy gained from net radiation be balanced by the fluxes of sensible and latent heat to the atmosphere and the storage of heat in soil.

These energy fluxes are a primary determinant of surface climate. FIFE surface climate and site-average dataset – Journal of the. The surface radiation balance is the algebraic sum of the net solar radiation and the net long-wave radiation received by a surface.

It may be measured directly with a net radiometer, deduced from. The radiation and heat balance of men working in Antarctica were studied by Chrenko and Pugh (), and Figure is based on their analysis for a man wearing a black sweater standing facing the sun.

The air temperature was only ° C but because the sun was 22 ° above the horizon, the radiative load on vertical surfaces facing the sun was exceptionally large. by remote sensing based Surface Energy Balance System (SEBS) and evaluation of the model performance at data scarce, arid and semi arid eastern Ethiopia 2.

Methodology The Study Area Geographically, the study area is found within 3 o32'56" and 9 o52'8" North Latitude and 39 o9'43" and 48 o0'0" East Logitude (Figure 1) The geographic extent of.

Introduction [2] The sensible (H), latent (LE), and ground (G) heat fluxes as well as outgoing longwave radiation (OLR) are key terms in the surface energy balance and work to dissipate available energy at the land magnitude of the combined turbulent fluxes (H + LE) and their relative partitioning affect the evolution of surface heating and drying, influence the structure of.

An example of the surface radiation components is shown in Fig. Soil temperatures and heat flux The surface or skin temperature is important for the radiative balance of the surface and for predicting frost and dew.

It can be quite different than the `surface' air temperature, which is conventionally measured at m. The energy budget at the surface is more complex that the budget at the top of the atmosphere. At the TOA the only energy transfer mechanisms are radiative (shortwave and longwave). At the surface, in addition to radiation we need to consider fluxes of energy by conduction and by convection of heat and moisture through turbulent fluid motion.

surface layer), an important length scale is the aero-dynamic roughness length, z0,which indicates the roughness of the surface (see Table ). For statically nonneutral conditions in the surface layer, there is an additional length scale, called the Obukhov length () where k %.

This is an expression derived from radiation heat transfer, which associates radiosity E R, radiation properties (ɛ, α), temperature (T, E b), and heat transfer flux q with each other to simplify calculation.

A remarkable conclusion can be drawn from Eq. (): if an object has no radiant energy exchange with its external environment (q = 0), then E R = E b whether or not the object is a. Chapter 1: Terrestrial Surface Energy Balance 1. Introduction Solar radiation and atmospheric longwave radiation warm the surface and provide energy to drive weather and climate.

The energy is expended as follows • some of it is stored in the ground (or the oceans) • some of it is returned to the atmosphere, warming the air. van der Kwast et al.: Evaluation of the Surface Energy Balance System for the validation of SVAT models.

Recently, surface energy balance models have been developed that use remote sensing data to estimate surface energy fluxes, e.g. TSEB (Norman et al., ), SEBAL (Bastiaanssen et al., ), and SEBS (Su, ). calculate the earth's radiation and energy balances and correctly interpret your calculated results; explain how the earth's radiation balance, the earth's surface characteristics, and the partitioning of energy affects spatial and temporal patterns to temperature.

Marcelo P. Curtarelli, Igor Ogashawara, Carlos A. Araújo, Enner H. Alcântara, João A. Lorenzzetti, José L. Stech, Influence of summertime mesoscale convective systems on the heat balance and surface mixed layer dynamics of a large Amazonian hydroelectric reservoir, Journal of Geophysical Research: Oceans, /JC,4.

Satellite Images Applied to Surface Solar Radiation Estimation, Bella Espinar and Philippe Blanc. Worldwide Aspects of Solar Radiation Impact, Benoit Beckers. Local Energy Balance, Pierre Kastendeuch. Evapotranspiration, Marjorie Musy. Multiscale Daylight Modeling for Urban Environments, John Mardaljevic and George Janes.

Radiation balance on Earth. Apart from a small amount of energy that comes from inside the Earth, the energy that feeds the climate system of our planet comes mainly from the Sun.

In fact the Earth receives the radiant energy of the Sun (i.e. transported by electromagnetic radiation), about half of which is visible light, a small part is.This study aims at illustrating a methodology for predicting monthly scale actual evapotranspiration losses only based on meteorological data, which mimics the evapotranspiration intra-annual dynamic.

For this purpose, micrometeorological data at the Rollesbroich and Bondone mountain sites, which are energy-limited systems, and the Sister site, a water-limited system, have been analyzed. Based. The modification of the surface energy of textile fibers to improve functional properties such as the wettability was reviewed.

This modification can be achieved by physical or chemical methods or by the combination of both. Applications of plasma treatment to improve the wettability of natural and synthetic fibers were considered and some methods of wettability measurement were mentioned.