Upper-Air Data Collected on Ice Station Weddell.
From February to June 1992, as Ice Station Weddell (ISW) drifted through the uncharted western Weddell Sea, we launched radiosondes, typically twice a day, to study the structure of the lower atmosphere. Here, we describe the 15W radiosounding program, report on the availability of the data, and off...
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ftdtic:ADA289707 2023-05-15T18:18:45+02:00 Upper-Air Data Collected on Ice Station Weddell. Claffey, Kerry J. Andreas, Edgar L. Makshtas, Aleksandr P. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1994-08 text/html http://www.dtic.mil/docs/citations/ADA289707 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA289707 en eng http://www.dtic.mil/docs/citations/ADA289707 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Meteorology *METEOROLOGICAL DATA *UPPER ATMOSPHERE *ATMOSPHERIC SOUNDING PRESSURE GRADIENTS USSR OCEAN SURFACE ATMOSPHERIC TEMPERATURE TURBULENCE ICE FORMATION WINTER DATA ACQUISITION WIND VELOCITY SYNCHRONISM RADIOSONDES AIR WATER INTERACTIONS HEAT FLUX MARINE METEOROLOGY GEOSTROPHIC WIND HUMIDITY SEA ICE TEMPERATURE INVERSION JET STREAMS ICEBREAKERS WEDDEL SEA SPN-19950112029 Text 1994 ftdtic 2016-02-19T11:55:40Z From February to June 1992, as Ice Station Weddell (ISW) drifted through the uncharted western Weddell Sea, we launched radiosondes, typically twice a day, to study the structure of the lower atmosphere. Here, we describe the 15W radiosounding program, report on the availability of the data, and offer preliminary analyses of some of the atmospheric features we observed. For 10 days in late May and early June, as the Russian icebreaker Akademik Fedorov approached ISW from the northeast to help remove the ice camp, we made simultaneous soundings four times a day from 15W and from the Fedorov. We, therefore, also describe here the radiosounding system on the Fedorov, report on the availability of these data, and present preliminary comparisons of the simultaneous 15W and Fedorov soundings. Our soundings showed that temperature inversions were very common in this part of the Weddell Sea in fall and winter. Over 95% of the 15W soundings and 100% of the Fedorov soundings showed low-level temperature inversions. Of these, over 40% of the 15W soundings and over 67% of the Fedorov soundings were surface-based. A low-level jet in the wind speed profile was also common. We found such a jet in almost 80% of the 15W soundings for which we had wind information. The jet core was usually between 25 and 175 m above the surface, and speeds in the core were commonly between 4 and 10 m/s. (AN) Text Sea ice Weddel Sea Weddell Sea Defense Technical Information Center: DTIC Technical Reports database Weddell Weddell Sea |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Meteorology *METEOROLOGICAL DATA *UPPER ATMOSPHERE *ATMOSPHERIC SOUNDING PRESSURE GRADIENTS USSR OCEAN SURFACE ATMOSPHERIC TEMPERATURE TURBULENCE ICE FORMATION WINTER DATA ACQUISITION WIND VELOCITY SYNCHRONISM RADIOSONDES AIR WATER INTERACTIONS HEAT FLUX MARINE METEOROLOGY GEOSTROPHIC WIND HUMIDITY SEA ICE TEMPERATURE INVERSION JET STREAMS ICEBREAKERS WEDDEL SEA SPN-19950112029 |
spellingShingle |
Meteorology *METEOROLOGICAL DATA *UPPER ATMOSPHERE *ATMOSPHERIC SOUNDING PRESSURE GRADIENTS USSR OCEAN SURFACE ATMOSPHERIC TEMPERATURE TURBULENCE ICE FORMATION WINTER DATA ACQUISITION WIND VELOCITY SYNCHRONISM RADIOSONDES AIR WATER INTERACTIONS HEAT FLUX MARINE METEOROLOGY GEOSTROPHIC WIND HUMIDITY SEA ICE TEMPERATURE INVERSION JET STREAMS ICEBREAKERS WEDDEL SEA SPN-19950112029 Claffey, Kerry J. Andreas, Edgar L. Makshtas, Aleksandr P. Upper-Air Data Collected on Ice Station Weddell. |
topic_facet |
Meteorology *METEOROLOGICAL DATA *UPPER ATMOSPHERE *ATMOSPHERIC SOUNDING PRESSURE GRADIENTS USSR OCEAN SURFACE ATMOSPHERIC TEMPERATURE TURBULENCE ICE FORMATION WINTER DATA ACQUISITION WIND VELOCITY SYNCHRONISM RADIOSONDES AIR WATER INTERACTIONS HEAT FLUX MARINE METEOROLOGY GEOSTROPHIC WIND HUMIDITY SEA ICE TEMPERATURE INVERSION JET STREAMS ICEBREAKERS WEDDEL SEA SPN-19950112029 |
description |
From February to June 1992, as Ice Station Weddell (ISW) drifted through the uncharted western Weddell Sea, we launched radiosondes, typically twice a day, to study the structure of the lower atmosphere. Here, we describe the 15W radiosounding program, report on the availability of the data, and offer preliminary analyses of some of the atmospheric features we observed. For 10 days in late May and early June, as the Russian icebreaker Akademik Fedorov approached ISW from the northeast to help remove the ice camp, we made simultaneous soundings four times a day from 15W and from the Fedorov. We, therefore, also describe here the radiosounding system on the Fedorov, report on the availability of these data, and present preliminary comparisons of the simultaneous 15W and Fedorov soundings. Our soundings showed that temperature inversions were very common in this part of the Weddell Sea in fall and winter. Over 95% of the 15W soundings and 100% of the Fedorov soundings showed low-level temperature inversions. Of these, over 40% of the 15W soundings and over 67% of the Fedorov soundings were surface-based. A low-level jet in the wind speed profile was also common. We found such a jet in almost 80% of the 15W soundings for which we had wind information. The jet core was usually between 25 and 175 m above the surface, and speeds in the core were commonly between 4 and 10 m/s. (AN) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Claffey, Kerry J. Andreas, Edgar L. Makshtas, Aleksandr P. |
author_facet |
Claffey, Kerry J. Andreas, Edgar L. Makshtas, Aleksandr P. |
author_sort |
Claffey, Kerry J. |
title |
Upper-Air Data Collected on Ice Station Weddell. |
title_short |
Upper-Air Data Collected on Ice Station Weddell. |
title_full |
Upper-Air Data Collected on Ice Station Weddell. |
title_fullStr |
Upper-Air Data Collected on Ice Station Weddell. |
title_full_unstemmed |
Upper-Air Data Collected on Ice Station Weddell. |
title_sort |
upper-air data collected on ice station weddell. |
publishDate |
1994 |
url |
http://www.dtic.mil/docs/citations/ADA289707 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA289707 |
geographic |
Weddell Weddell Sea |
geographic_facet |
Weddell Weddell Sea |
genre |
Sea ice Weddel Sea Weddell Sea |
genre_facet |
Sea ice Weddel Sea Weddell Sea |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA289707 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766195453729177600 |