Drifter Data Collected During the TOGA COARE Intensive Observing (IOP) and Enhanced Monitoring (EMP) Periods
Entry ID:
COARE_oclsa_drifter
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Summary
Abstract:
DATA ACCESS Drifter data are available upon request from NOAA's National Oceanographic Data Center in Silver Spring, MD http://www.nodc.noaa.gov. The data are also archived at the National Center for Atmospheric Research (NCAR) in Boulder, CO http://dss.ucar.edu/pub/toga_coare/ and at MEDS in Ontario, Canada. http://www.meds-sdmm.dfo-mpo.gc.ca/ ... The TOGA COARE Data Information System contains information about
TOGA COARE datasets and provides direct access to data centers.
(http://lwf.ncdc.noaa.gov/oa/coare/)
BACKGROUND - TOGA COARE
TOGA COARE was a multidisciplinary, international research effort that
investigated the scientific phenomena associated with the interaction
between the atmosphere and the ocean in the warm pool region of the
western Pacific. The field experiment phase of the program took place
from 1 November 1992 through 28 February 1993 and involved the
deployment of oceanographic ships and buoys, several ship and
land-based Doppler radars, multiple low and high-level aircraft
equipped with Doppler radar and other airborne sensors, as well as a
variety of surface based instruments for in situ observations.
The following drifters were released during the TOGA COARE Intensive
Observing Period (IOP):
1) MARISONDE GT Drifter Data - Meteo France
Four Marisonde drifters, using Argos for location and data collection,
were released during the TOGA COARE Intensive Observing Period. On an
hourly basis, the buoys measured SST, wind speed, wind direction, and
water temperature down to a depth of 150 meters nominal (15-m
intervals). Atmospheric pressure (one-minute sampling) was measured at
the same time every three hours (excepted on buoy 15500).
A hydrostatic pressure sensor was located at the bottom of the
bathythermic chain in order to get the depth of the lowest temperature
probe (150 meters when the chain is straight).
Marisonde GT Argos 14416
WMO # 52887 (Experiment # 1435)
Deployment: 8 December 1992
End of Transmission: 19 July 1993 (223 days (hourly observations))
Air pressure: synoptic hours
Wind Direction: failed 6 January 1993
Wind Speed: o.k.
P Hydro and Thermistor chain: failed 5 January 1993 (except for
2 probes)
Geographic range: 1.78S,153.57E to 4.95S, 165.11E
Notes: Although most of the drifter's measurements failed in the
beginning of January 1993, it continued to drift until the end of
July 1993.
Marisonde GT Argos 14414
WMO # 52885 (Experiment # 1435)
Deployment: 9 December 1992
End of Transmission: 22 February 1993 for unknown reasons (75 days
(hourly observations))
Air pressure: synoptic hours
Wind Direction: o.k
Wind Speed: o.k.
P Hydro and Thermistor chain: o.k.
Geographic range: 1.02S, 155.89E to 4.51S, 164.44E
Notes: Data are correct up to that date.
Marisonde GT Argos 14415
WMO #: 52885 (Experiment # 1435)
Deployment: 27 January 1993
End of Transmission: 18 May 1993 (111 days (hourly observations))
Air pressure: synoptic hours
Wind Direction: o.k.
Wind Speed: o.k.
P Hydro and Thermistor chain: not working
Geographic range: 1.98S, 156.12E to 5.30S, 161.99E
Notes: Sea temperature measurements failed when deployed. The buoy
provided reliable atmospheric data (Air pressure
and wind) until mid-May 1993 and ceased to emit in mid-September.
Marisonde GT Argos 15500
WMO #: 52884 (Experiment # 1435)
Deployment 27 January 1993
End Transmission: 19 February 1993, when picked up by a ship (23
days (hourly observations))
Air pressure: not measured
Wind Direction: not working
Wind Speed: ok
P Hydro and Thermistor chain: o.k.
Geographic range: 1.49S, 156.07E to 3.29S, 157.64E
Notes: Wind direction measurements failed when deployed.
The other measurements were correct.
Data volume: approx. 1 MB
For more information, please contact Pierre Blouch
(blouch@meteo.ifremer.fr) at IFREMER.
2) BODEGA Drifter Data - ORSTOM Noumea
Eleven French BODEGA drifters (SERPE-IESM, GUIDEL, 56, FRANCE TRISTAR)
were deployed in August 1992 along the 165E meridian and in September
1992 along 156E. Seventeen additional BODEGA surface drifters were
deployed in December 1992 and January/February 1993 from R/V Le Noroit
along 156E, 4S-5N during the COARE IOP, two of which never transmitted
any data. Deployments were coordinated with a set of surface drifters
that were released by Peter Niiler from the University of California,
San Diego.
PTT # WMO # Transmission Position Position
(start) (end)
2675 ----- 19920813-19921030 -0.086 165.821 -6.631 156.184
2679 52890 19920814-19930929 2.016 165.073 24.714 176.567
2678 52889 19920815-19930930 3.991 165.141 13.734 153.761
2677 52892 19920821-19920927 4.056 165.069 4.895 172.584
2680 52893 19920822-19930413 1.021 164.919 -1.102 169.527
2676 52891 19920824-19930527 -6.631 156.184 -1.754 160.903
2685 52572 19920923-19921117 1.570 173.883 3.286 164.986
2686 52573 19920923-19930201 5.993 156.102 10.771 173.726
2681 52894 19920926-19921009 -0.430 155.749 -1.425 149.939
2682 52895 19920926-19921201 0.667 155.736 -4.914 151.016
2687 52574 19920926-19921119 1.649 155.932 -0.062 159.497
17618 52575 19921219-19930619 0.035 156.141 -1.431 171.650
17623 52576 19921220-19930705 1.987 156.265 16.886 142.684
17624 52577 19921220-19930921 3.979 156.003 14.698 134.672
17625 52578 19921222-19930323 1.025 156.232 0.279 157.609
17629 52579 19921222-19930701 -1.134 150.398 1.388 172.869
17619 52580 19930101-19930930 1.970 156.119 17.575 137.466
17627 52582 19930102-19930608 -2.031 156.296 -2.638 150.899
17620 52581 19930103-19930927 -0.045 156.755 -6.341 172.976
17626 52584 19930118-19930830 0.279 157.609 3.872 125.556
17621 52583 19930119-19930929 -0.986 156.042 0.261 163.552
17628 52585 19930119-19930930 -2.638 150.899 -1.134 150.398
17622 52589 19930302-19930703 0.124 154.105 8.503 151.993
2683 52586 19930122-19930330 -1.885 155.871 -0.551 159.397
2684 52571 19920924-19930225 3.079 156.100 1.570 173.883
2690 52588 19930125-19930928 2.916 155.496 14.652 132.409
Sixteen of the BODEGA drifters (PTT # 2675 through 2690) transmitted
to ARGOS in an "economical mode", i.e., 24 hours on, 48 hours off; the
remaining drifters (PTT # 17617 through 17629) transmitted daily for
two months after deployment and then switched to the economical
mode. The datafile covers 27 of these drifters (drifter 2689 died
during deployment and drifter 2688 had very few positions, even though
the temperature sensors worked, so it was removed from the file).
BODEGA drifters were equipped with a drogue sensor and with a
mini-thermistor chain with five sensors at 2, 5, 8, 12, and 20
m. These sensors transmitted hourly temperature measurements (15-min
sampling time). There was also a buoy hull sensor with a 2-hour
sampling rate, which was less accurate.
Data volume: 4.3 MB
For more information contact Yves du Penhoat
(dupenhoa@noumea.orstom.nc) at ORSTOM, Noumea.
3) SVP LAGRANGIAN Drifter Data - University of California
A total of 776 ARGOS-tracked drifters, equipped with two temperature
and one conductivity sensor as well as drifters equipped with one
temperature sensor, were deployed between 31 October 1989 and 22 July
1994 to obtain both Lagrangian and Eulerian descriptions of the
response of the momentum and salinity fields.
For more information contact Peter Niiler (niiler@nepac.ucsd.edu) at
Scripps. 
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: 30.0
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S: -30.0
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E: 180.0
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W: 120.0
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Temporal Coverage
Start Date:
1992-12-09
Stop Date:
1993-02-28
Distribution
Distribution Media:
online www
Distribution Format:
ascii
Fees:
none
Personnel
Role:
TECHNICAL CONTACT
Email:
Ed.Olenic at noaa.gov
Role:
DIF AUTHOR
Phone:
301-614-5126
Fax:
301-614-5268
Email:
Scott.A.Ritz at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City:
Greenbelt
Province or State:
Maryland
Postal Code:
20771
Country:
USA
Creation and Review Dates
DIF Creation Date:
2003-02-10
Last DIF Revision Date:
2009-11-04
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