Directory taodata/currents/adcp The sub-directories listed below contain files of daily averaged Acoustic Doppler Current Profiler (ADCP) data from moorings on the equator at 110W, 140W, 165E, and 156E (maintained by NOAA's Pacific Marine Environmental Laboratory, PMEL), 170W (courtesy of Prof. Robert Weisberg, University of South Florida through July 1996, from PMEL thereafter), and 147E (courtesy of Prof. Kunio Kutsuwada, Tokai University, through) February 1993, Dr. Yoshifumi Kuroda, thereafter). 150 kHz ADCPs were mounted either downward looking from surface moorings or upward looking from subsurface moorings. The data are organized into location subdirectories listed below. Each file within the PMEL site subdirectories contain data from individual mooring deployments. At non-PMEL sites there is only one file which contains data from more than one mooring deployment. Filenames and time series start and end dates are also listed below. taodata/currents/adcp/110w filename start date end date orientation pr04d.adcp 17 May 91 26 Oct 91 down pr06d.adcp 30 Oct 91 11 May 92 down pr08d.adcp 14 May 92 3 Nov 92 down pr10d.adcp 6 Nov 92 7 May 93 down pr12d.adcp 9 May 93 8 Sep 93 down pr14d.adcp 11 Sep 93 4 May 94 down pr16d.adcp 8 Jun 94 22 Aug 94 down pr18d.adcp 20 Sep 94 22 Feb 95 down pr20d.adcp 25 Feb 95 10 Aug 95 down ea1d.adcp 12 Aug 95 18 May 96 up ea2d.adcp 20 May 96 8 Oct 96 up ea2bd.adcp 11 Oct 96 21 Feb 97 up ea3d.adcp 24 Feg 97 27 Feb 98 up taodata/currents/adcp/110w pr01d.adcp 1 May 90 24 Oct 90 down pr02d.adcp 28 Oct 90 6 May 91 down pr03d.adcp 9 May 91 6 Nov 91 down pr05d.adcp 10 Nov 91 28 Apr 92 down pr07d.adcp 1 May 92 12 Sep 92 down pr09d.adcp 16 Sep 92 25 Apr 93 down pr11d.adcp 28 Apr 93 11 Oct 93 down pr13d.adcp 14 Oct 93 26 May 94 down pr15d.adcp 29 May 94 10 Oct 94 down pr17d.adcp 13 Oct 94 20 Mar 95 down pr19d.adcp 23 Mar 95 9 Sep 95 down ca2d.adcp 5 Sep 96 20 Oct 97 up ca3d.adcp 22 Oct 97 27 Sep 98 up taodata/currents/adcp/170w 170w.adcp 16 May 88 18 Feb 91 up 170w_4.adcp 22 Feb 91 28 jan 92 up 170w_5.adcp 31 Jan 92 29 Mar 93 up 170wrtu.adcp 1 Apr 93 20 Mar 94 down ka1d.adcp 29 Jul 96 22 May 97 up ka2d.adcp 25 May 97 22 Jun 98 up taodata/currents/adcp/165e fu1d.adcp 30 Mar 91 4 Aug 91 down fu3d.adcp 8 Aug 91 6 Feb 92 down fu5d.adcp 9 Feb 92 1 Aug 92 down fu7d.adcp 25 Aug 92 19 Nov 92 down fu7bd.adcp 13 Dec 92 14 Mar 93 down fu9d.adcp 24 Mar 93 23 Dec 93 down tc1d.adcp 26 Dec 93 14 Apr 94 down tc1bd.adcp 16 Apr 94 15 Dec 94 down tc5d.adcp 2 May 95 27 Jan 96 down wa1d.adcp 30 Jan 96 10 Jul 96 up wa1bd.adcp 12 Jul 96 29 Jan 97 up wa1cd.adcp 1 Feb 97 12 Jun 97 up 165ed97.adcp 1 Feb 97 7 Jan 98 up taodata/currents/adcp/156e fu2d.adcp 29 Aug 91 27 Feb 92 down fu4d.adcp 2 Mar 92 4 Sep 92 down fu6d.adcp 16 Sep 92 23 Dec 92 down fu6bd.adcp 8 Feb 93 8 Mar 93 down fu8d.adcp 12 Mar 93 27 Apr 94 up tc4d.adcp 30 Apr 94 10 Dec 94 down taodata/currents/adcp/147e 147ed92.adcp 1 Jan 92 23 Feb 93 up 147ed94.adcp 29 Apr 94 17 Dec 94 up 147ed95.adcp 4 Jan 95 10 Feb 96 up 147ed96.adcp 14 Feb 96 17 Feb 97 up 147ed97.adcp 20 Feb 97 22 Jan 98 up Daily means are computed between 0000 and 2359 GMT. In general surface moorings are recovered and redeployed at roughly 6-month intervals. Subsurface mooring deployments are typically 1 year long. After processing and quality checks have been performed data will be appended to existing files 6-12 months after recovery. ADCP data from moorings maintained by PMEL (110W, 140W, 165E, 156E) have been corrected for variations in sound velocity. Original measurements were made using 8m bin widths. The corrected data available here have been remapped to 5m bin widths. Data from the moorings at 110W and 140W were at times significantly biased due to presence of fish near the moorings. Corrections to the ADCP data have been made using coincident mechanical current meter data (contained in taodata/currents). Details of the correction algorithm may be found in NOAA Technical Memorandum ERL PMEL-107: Correcting moored ADCP data for fish-bias erros at 0, 110W and 0, 140W from 1990 to 1993", by Plimpton, P.E., H.P. Freitag, and M.J. McPhaden, NOAA Technical Memorandum ERL PMEL-107, 49pp. Details on the 170W ADCP data may be found in "Upper ocean variability on the equator in the west-central Pacific at 170W" by R.H. Weisberg and S.P. Hayes, J. Geophys. Res., 1995 (in press). Details on the first 147E ADCP data may be found in "Long-Range Measurement of Surface Oceanic Current in the Western Equatorial Pacific by Acoustic Doppler Current Profiler", by Kunio Kutsuwada and Hideo Inaba, J. of Meteor. Soc. of Japan, Vol 73, No. 1, pp. 1-11, 1995 (in press). Surface moorings have on occasion broken free from their anchors and drifted from their deployed location while still returning data. Daily mooring locations can be found in the corresponding met data files. For example, to find the locations for the mooring at 0n110w, refer to the file 0n110w.met in the directory taodata/surface. Daily velocity data from these drifting buoys have been corrected using drift velocities computed from location changes. Information on buoys that have drifted is listed in the file taodata/hourly/drifters.doc. Please send comments, questions or problems concerning these data to "freitag@pmel.noaa.gov".