A comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the North Pacific Ocean
Acoustic thermometry gives integral measurements of large-scale ocean temperature, providing the spatial low-pass filtering needed to observe small, gyre-scale signals in the presence of much larger, mesoscale noise. Approximately two-year-long time series of temperature have been measured using lon...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.116.6146 2023-05-15T16:59:19+02:00 A comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the North Pacific Ocean Peter F. Worcester Brian D. Dushaw The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.116.6146 http://npal.ucsd.edu/publications/unrefereed_pubs/porsec2000.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.116.6146 http://npal.ucsd.edu/publications/unrefereed_pubs/porsec2000.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://npal.ucsd.edu/publications/unrefereed_pubs/porsec2000.pdf text ftciteseerx 2016-01-07T13:54:42Z Acoustic thermometry gives integral measurements of large-scale ocean temperature, providing the spatial low-pass filtering needed to observe small, gyre-scale signals in the presence of much larger, mesoscale noise. Approximately two-year-long time series of temperature have been measured using long-range acoustic transmissions in the Northeast Pacific by the Acoustic Thermometry of Ocean Climate (ATOC) project. The signals transmitted by two sources, one on Pioneer Seamount off California and one north of Kauai, were received at various times by (i) U. S. Navy SOSUS arrays, (ii) vertical receiving arrays near the island of Hawaii, near Kiritimati (Christmas) Island, and at OWS Papa; (iii) a Russian receiver off Kamchatka; and (iv) a receiver off New Zealand. Temperature data from the Hawaiian Ocean Time-series (HOT) site show substantially more mesoscale noise than the integral acoustic data, as expected, although transmissions between Hawaii and California show a surprising amount of variability at roughly 100-day time scales. Assuming that variations in sea surface height are caused by thermal expansion in the upper 100 m of the ocean, the annual cycle of heat content derived from altimetry is larger than that derived from the acoustic data, from XBTs of opportunity, and from climatology. Consistent results for the seasonal heat storage in the ocean are found when the acoustic and altimetry data are combined with a computer model Text Kamchatka Unknown New Zealand Pacific |
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English |
description |
Acoustic thermometry gives integral measurements of large-scale ocean temperature, providing the spatial low-pass filtering needed to observe small, gyre-scale signals in the presence of much larger, mesoscale noise. Approximately two-year-long time series of temperature have been measured using long-range acoustic transmissions in the Northeast Pacific by the Acoustic Thermometry of Ocean Climate (ATOC) project. The signals transmitted by two sources, one on Pioneer Seamount off California and one north of Kauai, were received at various times by (i) U. S. Navy SOSUS arrays, (ii) vertical receiving arrays near the island of Hawaii, near Kiritimati (Christmas) Island, and at OWS Papa; (iii) a Russian receiver off Kamchatka; and (iv) a receiver off New Zealand. Temperature data from the Hawaiian Ocean Time-series (HOT) site show substantially more mesoscale noise than the integral acoustic data, as expected, although transmissions between Hawaii and California show a surprising amount of variability at roughly 100-day time scales. Assuming that variations in sea surface height are caused by thermal expansion in the upper 100 m of the ocean, the annual cycle of heat content derived from altimetry is larger than that derived from the acoustic data, from XBTs of opportunity, and from climatology. Consistent results for the seasonal heat storage in the ocean are found when the acoustic and altimetry data are combined with a computer model |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Peter F. Worcester Brian D. Dushaw |
spellingShingle |
Peter F. Worcester Brian D. Dushaw A comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the North Pacific Ocean |
author_facet |
Peter F. Worcester Brian D. Dushaw |
author_sort |
Peter F. Worcester |
title |
A comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the North Pacific Ocean |
title_short |
A comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the North Pacific Ocean |
title_full |
A comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the North Pacific Ocean |
title_fullStr |
A comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the North Pacific Ocean |
title_full_unstemmed |
A comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the North Pacific Ocean |
title_sort |
comparison of acoustic thermometry, satellite altimetry, and other observations of ocean temperature in the north pacific ocean |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.116.6146 http://npal.ucsd.edu/publications/unrefereed_pubs/porsec2000.pdf |
geographic |
New Zealand Pacific |
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New Zealand Pacific |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
http://npal.ucsd.edu/publications/unrefereed_pubs/porsec2000.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.116.6146 http://npal.ucsd.edu/publications/unrefereed_pubs/porsec2000.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766051561996288000 |