Diurnal ocean surface layer model validation
The diurnal ocean surface layer (DOSL) model at the Fleet Numerical Oceanography Center forecasts the 24-hour change in a global sea surface temperatures (SST). Validating the DOSL model is a difficult task due to the huge areas involved and the lack of in situ measurements. Therefore, this report d...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19910008215 2023-05-15T17:34:02+02:00 Diurnal ocean surface layer model validation May, Douglas A. Hawkins, Jeffrey D. Abell, Fred, Jr. Unclassified, Unlimited, Publicly available May 1, 1990 application/pdf http://hdl.handle.net/2060/19910008215 unknown Document ID: 19910008215 Accession ID: 91N17528 http://hdl.handle.net/2060/19910008215 No Copyright CASI OCEANOGRAPHY AD-A229010 NOARL-3 1990 ftnasantrs 2019-07-21T09:08:24Z The diurnal ocean surface layer (DOSL) model at the Fleet Numerical Oceanography Center forecasts the 24-hour change in a global sea surface temperatures (SST). Validating the DOSL model is a difficult task due to the huge areas involved and the lack of in situ measurements. Therefore, this report details the use of satellite infrared multichannel SST imagery to provide day and night SSTs that can be directly compared to DOSL products. This water-vapor-corrected imagery has the advantages of high thermal sensitivity (0.12 C), large synoptic coverage (nearly 3000 km across), and high spatial resolution that enables diurnal heating events to be readily located and mapped. Several case studies in the subtropical North Atlantic readily show that DOSL results during extreme heating periods agree very well with satellite-imagery-derived values in terms of the pattern of diurnal warming. The low wind and cloud-free conditions necessary for these events to occur lend themselves well to observation via infrared imagery. Thus, the normally cloud-limited aspects of satellite imagery do not come into play for these particular environmental conditions. The fact that the DOSL model does well in extreme events is beneficial from the standpoint that these cases can be associated with the destruction of the surface acoustic duct. This so-called afternoon effect happens as the afternoon warming of the mixed layer disrupts the sound channel and the propagation of acoustic energy. Other/Unknown Material North Atlantic NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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OCEANOGRAPHY |
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OCEANOGRAPHY May, Douglas A. Hawkins, Jeffrey D. Abell, Fred, Jr. Diurnal ocean surface layer model validation |
topic_facet |
OCEANOGRAPHY |
description |
The diurnal ocean surface layer (DOSL) model at the Fleet Numerical Oceanography Center forecasts the 24-hour change in a global sea surface temperatures (SST). Validating the DOSL model is a difficult task due to the huge areas involved and the lack of in situ measurements. Therefore, this report details the use of satellite infrared multichannel SST imagery to provide day and night SSTs that can be directly compared to DOSL products. This water-vapor-corrected imagery has the advantages of high thermal sensitivity (0.12 C), large synoptic coverage (nearly 3000 km across), and high spatial resolution that enables diurnal heating events to be readily located and mapped. Several case studies in the subtropical North Atlantic readily show that DOSL results during extreme heating periods agree very well with satellite-imagery-derived values in terms of the pattern of diurnal warming. The low wind and cloud-free conditions necessary for these events to occur lend themselves well to observation via infrared imagery. Thus, the normally cloud-limited aspects of satellite imagery do not come into play for these particular environmental conditions. The fact that the DOSL model does well in extreme events is beneficial from the standpoint that these cases can be associated with the destruction of the surface acoustic duct. This so-called afternoon effect happens as the afternoon warming of the mixed layer disrupts the sound channel and the propagation of acoustic energy. |
format |
Other/Unknown Material |
author |
May, Douglas A. Hawkins, Jeffrey D. Abell, Fred, Jr. |
author_facet |
May, Douglas A. Hawkins, Jeffrey D. Abell, Fred, Jr. |
author_sort |
May, Douglas A. |
title |
Diurnal ocean surface layer model validation |
title_short |
Diurnal ocean surface layer model validation |
title_full |
Diurnal ocean surface layer model validation |
title_fullStr |
Diurnal ocean surface layer model validation |
title_full_unstemmed |
Diurnal ocean surface layer model validation |
title_sort |
diurnal ocean surface layer model validation |
publishDate |
1990 |
url |
http://hdl.handle.net/2060/19910008215 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
CASI |
op_relation |
Document ID: 19910008215 Accession ID: 91N17528 http://hdl.handle.net/2060/19910008215 |
op_rights |
No Copyright |
_version_ |
1766132719170879488 |