Compensation for use of monthly-averaged winds in numerical modeling
Ratios R of the monthly averaged wind speeds to the magnitudes of the monthly averaged wind vectors are presented over a 41 x 41 grid covering the southern Ocean and the Antarctic continent. The ratio is found to vary from 1 to over 1000, with an average value of 1.86. These ratios R are relevant fo...
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1981
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ftnasantrs:oai:casi.ntrs.nasa.gov:19820005750 2023-05-15T14:04:06+02:00 Compensation for use of monthly-averaged winds in numerical modeling Parkinson, C. L. Unclassified, Unlimited, Publicly available Nov 1, 1981 application/pdf http://hdl.handle.net/2060/19820005750 unknown Document ID: 19820005750 Accession ID: 82N13623 http://hdl.handle.net/2060/19820005750 No Copyright CASI METEOROLOGY AND CLIMATOLOGY NASA-TM-83855 1981 ftnasantrs 2019-07-21T10:18:17Z Ratios R of the monthly averaged wind speeds to the magnitudes of the monthly averaged wind vectors are presented over a 41 x 41 grid covering the southern Ocean and the Antarctic continent. The ratio is found to vary from 1 to over 1000, with an average value of 1.86. These ratios R are relevant for converting from sensible and latent heats calculated with mean monthly data to those calculated with 12 hourly data. The corresponding ratios alpha for wind stress, along with the angle deviations involved, are also presented over the same 41 x 41 grid. The values of alpha generally exceed those for R and average 2.66. Regions in zones of variable wind directions have larger R and alpha ratios, over the ice-covered portions of the southern Ocean averaging 2.74 and 4.35 for R and alpha respectively. Thus adjustments to compensate for the use of mean monthly wind velocities should be stronger for wind stress than for turbulent heats and stronger over ice covered regions than over regions with more persistent wind directions, e.g., those in the belt of mid-latitude westerlies. Other/Unknown Material Antarc* Antarctic Southern Ocean NASA Technical Reports Server (NTRS) Antarctic Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
METEOROLOGY AND CLIMATOLOGY |
spellingShingle |
METEOROLOGY AND CLIMATOLOGY Parkinson, C. L. Compensation for use of monthly-averaged winds in numerical modeling |
topic_facet |
METEOROLOGY AND CLIMATOLOGY |
description |
Ratios R of the monthly averaged wind speeds to the magnitudes of the monthly averaged wind vectors are presented over a 41 x 41 grid covering the southern Ocean and the Antarctic continent. The ratio is found to vary from 1 to over 1000, with an average value of 1.86. These ratios R are relevant for converting from sensible and latent heats calculated with mean monthly data to those calculated with 12 hourly data. The corresponding ratios alpha for wind stress, along with the angle deviations involved, are also presented over the same 41 x 41 grid. The values of alpha generally exceed those for R and average 2.66. Regions in zones of variable wind directions have larger R and alpha ratios, over the ice-covered portions of the southern Ocean averaging 2.74 and 4.35 for R and alpha respectively. Thus adjustments to compensate for the use of mean monthly wind velocities should be stronger for wind stress than for turbulent heats and stronger over ice covered regions than over regions with more persistent wind directions, e.g., those in the belt of mid-latitude westerlies. |
format |
Other/Unknown Material |
author |
Parkinson, C. L. |
author_facet |
Parkinson, C. L. |
author_sort |
Parkinson, C. L. |
title |
Compensation for use of monthly-averaged winds in numerical modeling |
title_short |
Compensation for use of monthly-averaged winds in numerical modeling |
title_full |
Compensation for use of monthly-averaged winds in numerical modeling |
title_fullStr |
Compensation for use of monthly-averaged winds in numerical modeling |
title_full_unstemmed |
Compensation for use of monthly-averaged winds in numerical modeling |
title_sort |
compensation for use of monthly-averaged winds in numerical modeling |
publishDate |
1981 |
url |
http://hdl.handle.net/2060/19820005750 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
CASI |
op_relation |
Document ID: 19820005750 Accession ID: 82N13623 http://hdl.handle.net/2060/19820005750 |
op_rights |
No Copyright |
_version_ |
1766275113441820672 |