Sensible and Latent Heat Fluxes and Humidity Profiles Following a Step Change in Surface Moisture
From a high-quality set of velocity, temperature, and humidity profiles collected upwind and downwind of a step change in surface roughness, temperature, and moisture, we have calculated upwind and downwind values of the heat fluxes and friction velocity. The surface change is from smooth to rough;...
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ftdtic:ADA115596 2023-05-15T15:05:38+02:00 Sensible and Latent Heat Fluxes and Humidity Profiles Following a Step Change in Surface Moisture Andreas,Edgar L COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1982-04 text/html http://www.dtic.mil/docs/citations/ADA115596 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA115596 en eng http://www.dtic.mil/docs/citations/ADA115596 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Meteorology Thermodynamics *Heat flux Micrometeorology Senses(Physiology) Latent heat Wind Friction Velocity Surface roughness Discontinuities Temperature Humidity PE61102A AST24 WU004 Text 1982 ftdtic 2016-02-19T08:05:14Z From a high-quality set of velocity, temperature, and humidity profiles collected upwind and downwind of a step change in surface roughness, temperature, and moisture, we have calculated upwind and downwind values of the heat fluxes and friction velocity. The surface change is from smooth to rough; upwind, the sensible heat flux is upward and the latent heat flux is zero; downwind, the surface is well-watered so that the latent heat flux is upward while the sensible heat flux is downward. The downwind latent heat flux in this fetch-limited flow obeys NL=0.08 Rx 0.76 where NL is the latent heat Nusselt number and Rx is the fetch Reynolds number, a parameter for characterizing fetch-limited flows. Because this relation is virtually the same as one found to describe the sensible heat and condensate fluxes over arctic leads, we conclude that the Nusselt numbers nondimensionalizing scalar fluxes are the same for a given fetch Reynolds number when boundary conditions are similar. Text Arctic Defense Technical Information Center: DTIC Technical Reports database Arctic |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Meteorology Thermodynamics *Heat flux Micrometeorology Senses(Physiology) Latent heat Wind Friction Velocity Surface roughness Discontinuities Temperature Humidity PE61102A AST24 WU004 |
spellingShingle |
Meteorology Thermodynamics *Heat flux Micrometeorology Senses(Physiology) Latent heat Wind Friction Velocity Surface roughness Discontinuities Temperature Humidity PE61102A AST24 WU004 Andreas,Edgar L Sensible and Latent Heat Fluxes and Humidity Profiles Following a Step Change in Surface Moisture |
topic_facet |
Meteorology Thermodynamics *Heat flux Micrometeorology Senses(Physiology) Latent heat Wind Friction Velocity Surface roughness Discontinuities Temperature Humidity PE61102A AST24 WU004 |
description |
From a high-quality set of velocity, temperature, and humidity profiles collected upwind and downwind of a step change in surface roughness, temperature, and moisture, we have calculated upwind and downwind values of the heat fluxes and friction velocity. The surface change is from smooth to rough; upwind, the sensible heat flux is upward and the latent heat flux is zero; downwind, the surface is well-watered so that the latent heat flux is upward while the sensible heat flux is downward. The downwind latent heat flux in this fetch-limited flow obeys NL=0.08 Rx 0.76 where NL is the latent heat Nusselt number and Rx is the fetch Reynolds number, a parameter for characterizing fetch-limited flows. Because this relation is virtually the same as one found to describe the sensible heat and condensate fluxes over arctic leads, we conclude that the Nusselt numbers nondimensionalizing scalar fluxes are the same for a given fetch Reynolds number when boundary conditions are similar. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Andreas,Edgar L |
author_facet |
Andreas,Edgar L |
author_sort |
Andreas,Edgar L |
title |
Sensible and Latent Heat Fluxes and Humidity Profiles Following a Step Change in Surface Moisture |
title_short |
Sensible and Latent Heat Fluxes and Humidity Profiles Following a Step Change in Surface Moisture |
title_full |
Sensible and Latent Heat Fluxes and Humidity Profiles Following a Step Change in Surface Moisture |
title_fullStr |
Sensible and Latent Heat Fluxes and Humidity Profiles Following a Step Change in Surface Moisture |
title_full_unstemmed |
Sensible and Latent Heat Fluxes and Humidity Profiles Following a Step Change in Surface Moisture |
title_sort |
sensible and latent heat fluxes and humidity profiles following a step change in surface moisture |
publishDate |
1982 |
url |
http://www.dtic.mil/docs/citations/ADA115596 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA115596 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA115596 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
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1766337287206993920 |