On long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats
[1] Argo float data (subsurface tracks and temperature profiles collected from March 2004 through May 2005) are used to detect signatures of long Rossby waves in the velocity of the currents at 1000-m depth and temperature, between the ocean surface and 950 m, in the zonal band of 4N–24N in the trop...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.8676 http://www.oc.nps.edu/~chu/web_paper/jgr/rossby_osd.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.630.8676 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.630.8676 2023-05-15T17:30:49+02:00 On long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats P. C. Chu L. M. Ivanov O. V. Melnichenko N. C. Wells The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.8676 http://www.oc.nps.edu/~chu/web_paper/jgr/rossby_osd.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.8676 http://www.oc.nps.edu/~chu/web_paper/jgr/rossby_osd.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.oc.nps.edu/~chu/web_paper/jgr/rossby_osd.pdf text ftciteseerx 2016-01-08T15:28:48Z [1] Argo float data (subsurface tracks and temperature profiles collected from March 2004 through May 2005) are used to detect signatures of long Rossby waves in the velocity of the currents at 1000-m depth and temperature, between the ocean surface and 950 m, in the zonal band of 4N–24N in the tropical North Atlantic. Different types of long Rossby waves (with the characteristic scales between 1000 and 2500 km) are identified in the western [west of the Mid-Atlantic Ridge (MAR)] and eastern [east of the MAR] subbasins. Along-shore wind fluctuations and an equatorially forced coastal Kelvin wavewere found to be responsible for the excitation of annual- and semiannual-propagating Rossby waves in the eastern subbasin. These waves are transmitted along a waveguide formed by the African shelf and the MAR. The speed of their propagation varies in magnitude and direction because of bottom topography and irregularity of the coastline. Unstable standing Rossby waves with annual and semiannual periods are shown in both the subbasins. All unstable waves, decaying, radiate shorter free Rossbywaves propagating bothwestward and northwestward, with speeds of up to 10 cm/s. The standing Rossby waves are probably excited by the wind-driven Ekman pumping alone or in combination with linear and nonlinear resonance mechanisms. The additional analysis of subsurface float tracks from Text North Atlantic Unknown Mid-Atlantic Ridge |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
[1] Argo float data (subsurface tracks and temperature profiles collected from March 2004 through May 2005) are used to detect signatures of long Rossby waves in the velocity of the currents at 1000-m depth and temperature, between the ocean surface and 950 m, in the zonal band of 4N–24N in the tropical North Atlantic. Different types of long Rossby waves (with the characteristic scales between 1000 and 2500 km) are identified in the western [west of the Mid-Atlantic Ridge (MAR)] and eastern [east of the MAR] subbasins. Along-shore wind fluctuations and an equatorially forced coastal Kelvin wavewere found to be responsible for the excitation of annual- and semiannual-propagating Rossby waves in the eastern subbasin. These waves are transmitted along a waveguide formed by the African shelf and the MAR. The speed of their propagation varies in magnitude and direction because of bottom topography and irregularity of the coastline. Unstable standing Rossby waves with annual and semiannual periods are shown in both the subbasins. All unstable waves, decaying, radiate shorter free Rossbywaves propagating bothwestward and northwestward, with speeds of up to 10 cm/s. The standing Rossby waves are probably excited by the wind-driven Ekman pumping alone or in combination with linear and nonlinear resonance mechanisms. The additional analysis of subsurface float tracks from |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
P. C. Chu L. M. Ivanov O. V. Melnichenko N. C. Wells |
spellingShingle |
P. C. Chu L. M. Ivanov O. V. Melnichenko N. C. Wells On long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats |
author_facet |
P. C. Chu L. M. Ivanov O. V. Melnichenko N. C. Wells |
author_sort |
P. C. Chu |
title |
On long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats |
title_short |
On long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats |
title_full |
On long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats |
title_fullStr |
On long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats |
title_full_unstemmed |
On long baroclinic Rossby waves in the tropical North Atlantic observed from profiling floats |
title_sort |
on long baroclinic rossby waves in the tropical north atlantic observed from profiling floats |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.8676 http://www.oc.nps.edu/~chu/web_paper/jgr/rossby_osd.pdf |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://www.oc.nps.edu/~chu/web_paper/jgr/rossby_osd.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.630.8676 http://www.oc.nps.edu/~chu/web_paper/jgr/rossby_osd.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766127914370203648 |