Wind Stress Drag Coefficient over the Global Ocean
Interannual and climatological variations of wind stress drag coefficient are examined over the global ocean from 1998 to 2004. Here CD is calculated using high temporal resolution (3- and 6-hourly) surface atmospheric variables from two datasets: 1 )the 40-yr European Centre for Medium-Range Weathe...
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ftdtic:ADA476538 2023-05-15T17:36:18+02:00 Wind Stress Drag Coefficient over the Global Ocean Kara, Ahmet B. Wallcraft, Alan J. Metzger, E. J. Hurlburt, Harley E. Fairall, Chris NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV 2007-12-01 text/html http://www.dtic.mil/docs/citations/ADA476538 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA476538 en eng http://www.dtic.mil/docs/citations/ADA476538 Approved for public release; distribution is unlimited. DTIC Atmospheric Physics *WIND STRESS REPRINTS WEATHER FORECASTING SEASONAL VARIATIONS COEFFICIENTS CLIMATE AERODYNAMIC DRAG OCEANS AIR WATER INTERACTIONS HIGH LATITUDES SEA WATER *DRAG COEFFICIENT GLOBAL OCEAN NOGAPS ECMWF(EUROPEAN CENTRE FOR MEDIUM-RANGE WEATHER FORECASTS) PE0602435N Text 2007 ftdtic 2016-02-22T13:27:33Z Interannual and climatological variations of wind stress drag coefficient are examined over the global ocean from 1998 to 2004. Here CD is calculated using high temporal resolution (3- and 6-hourly) surface atmospheric variables from two datasets: 1 )the 40-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-40) and 2) the Navy Operational Global Atmospheric Prediction System. The stability-dependent CD algorithm applied to both datasets gives almost identical values over most of the global ocean, confirming the validity of results. Overall, major findings of this paper are as follows: 1) the CD value can change significantly (e.g, greater than 50%) on 12-hourly time scales around the Kuroshio and Gulf Stream current systems: 2) there is strong seasonal variability in CD, but there is not much interannual change in the spatial variability for a given month; 3) a global mean Cd ~ 1.25 x 10-3 is found in all months, while CD is less than or equal to 1.5 x 10-3 is prevalent over the North Pacific and North Atlantic Oceans and in southern high-latitude regions as well. and CD is less than or equal to 1.0 x 10-3 is typical in the eastern equatorial Pacific cold tongue; and 4) including the effects of air-sea stability on CD generally causes an increase of less than 20% in comparison to the one calculated based on neutral conditions in the tropical regions. Finally, spatially and temporally varying CD fields are therefore needed for a variety of climate and air-sea interaction studies. The original document contains color images. All DTIC reproductions will be in black and white. Pub. in Jnl. of Climate, v20 p5856-5864, 1 Dec 2007. Text North Atlantic Defense Technical Information Center: DTIC Technical Reports database Pacific |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Atmospheric Physics *WIND STRESS REPRINTS WEATHER FORECASTING SEASONAL VARIATIONS COEFFICIENTS CLIMATE AERODYNAMIC DRAG OCEANS AIR WATER INTERACTIONS HIGH LATITUDES SEA WATER *DRAG COEFFICIENT GLOBAL OCEAN NOGAPS ECMWF(EUROPEAN CENTRE FOR MEDIUM-RANGE WEATHER FORECASTS) PE0602435N |
spellingShingle |
Atmospheric Physics *WIND STRESS REPRINTS WEATHER FORECASTING SEASONAL VARIATIONS COEFFICIENTS CLIMATE AERODYNAMIC DRAG OCEANS AIR WATER INTERACTIONS HIGH LATITUDES SEA WATER *DRAG COEFFICIENT GLOBAL OCEAN NOGAPS ECMWF(EUROPEAN CENTRE FOR MEDIUM-RANGE WEATHER FORECASTS) PE0602435N Kara, Ahmet B. Wallcraft, Alan J. Metzger, E. J. Hurlburt, Harley E. Fairall, Chris Wind Stress Drag Coefficient over the Global Ocean |
topic_facet |
Atmospheric Physics *WIND STRESS REPRINTS WEATHER FORECASTING SEASONAL VARIATIONS COEFFICIENTS CLIMATE AERODYNAMIC DRAG OCEANS AIR WATER INTERACTIONS HIGH LATITUDES SEA WATER *DRAG COEFFICIENT GLOBAL OCEAN NOGAPS ECMWF(EUROPEAN CENTRE FOR MEDIUM-RANGE WEATHER FORECASTS) PE0602435N |
description |
Interannual and climatological variations of wind stress drag coefficient are examined over the global ocean from 1998 to 2004. Here CD is calculated using high temporal resolution (3- and 6-hourly) surface atmospheric variables from two datasets: 1 )the 40-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-40) and 2) the Navy Operational Global Atmospheric Prediction System. The stability-dependent CD algorithm applied to both datasets gives almost identical values over most of the global ocean, confirming the validity of results. Overall, major findings of this paper are as follows: 1) the CD value can change significantly (e.g, greater than 50%) on 12-hourly time scales around the Kuroshio and Gulf Stream current systems: 2) there is strong seasonal variability in CD, but there is not much interannual change in the spatial variability for a given month; 3) a global mean Cd ~ 1.25 x 10-3 is found in all months, while CD is less than or equal to 1.5 x 10-3 is prevalent over the North Pacific and North Atlantic Oceans and in southern high-latitude regions as well. and CD is less than or equal to 1.0 x 10-3 is typical in the eastern equatorial Pacific cold tongue; and 4) including the effects of air-sea stability on CD generally causes an increase of less than 20% in comparison to the one calculated based on neutral conditions in the tropical regions. Finally, spatially and temporally varying CD fields are therefore needed for a variety of climate and air-sea interaction studies. The original document contains color images. All DTIC reproductions will be in black and white. Pub. in Jnl. of Climate, v20 p5856-5864, 1 Dec 2007. |
author2 |
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV |
format |
Text |
author |
Kara, Ahmet B. Wallcraft, Alan J. Metzger, E. J. Hurlburt, Harley E. Fairall, Chris |
author_facet |
Kara, Ahmet B. Wallcraft, Alan J. Metzger, E. J. Hurlburt, Harley E. Fairall, Chris |
author_sort |
Kara, Ahmet B. |
title |
Wind Stress Drag Coefficient over the Global Ocean |
title_short |
Wind Stress Drag Coefficient over the Global Ocean |
title_full |
Wind Stress Drag Coefficient over the Global Ocean |
title_fullStr |
Wind Stress Drag Coefficient over the Global Ocean |
title_full_unstemmed |
Wind Stress Drag Coefficient over the Global Ocean |
title_sort |
wind stress drag coefficient over the global ocean |
publishDate |
2007 |
url |
http://www.dtic.mil/docs/citations/ADA476538 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA476538 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA476538 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766135745123188736 |