README FILE FOR CBL MOORING DATA 30th May 2006 Rebecca Woodgate, UW Funded by NSF-ANS OPP-0117480 ================================================================ 1234567890123456789012345678901234567890123456789012345678901234567890 This is an archive of data from 3 moorings (CBLA, CBLB, CBLC) deployed across the Chukchi continental slope west of the Chukchi Rise in the Chukchi Borderland region between 23/24th August 2002 and 15/16th September 2002, from the USCGC Polar Star (cruise CBL2002, also called AWS-02-II) with the purpose of measuring the Arctic Ocean Boundary current. CBLA 76deg 1.51min N 168deg 31.75min W in 634m of water CBLB 76deg 3.08min N 168deg 50.98min W in 1098m of water CBLC 76deg 7.85min N 168deg 59.16min W in 1620m of water. The mooring carried the following instruments: CBLA - RCM-7 s/n 11459 - at depth 110m (only 1 day of data) CBLA - SBE-16 s/n 1698 - at depth 111m CBLA - RCM-7 s/n 11454 - at depth 384m CBLA - SBE-16 s/n 2265 - at depth 385m CBLB - RCM-7 s/n 4295 - at depth 116m CBLB - SBE-16 s/n 1700 - at depth 117m CBLB - RCM-7 s/n 11458 - at depth 378m CBLB - SBE-16 s/n 2263 - at depth 379m CBLB - RCM-7 s/n 6493 - at depth 848m CBLC - RCM-7 s/n 6546 - at depth 100m CBLC - SBE-16 s/n 1935 - at depth 101m CBLC - RCM-7 s/n 6926 - at depth 369m CBLC - SBE-16 s/n 1400 - at depth 370m CBLC - RCM-7 s/n 6498 - at depth 819m CBLC - RCM-7 s/n 11135 - at depth 1603m CBLC - SBE-37 s/n 2316 - at depth 1604m RCM-7 = Aanderaa RCM (Recording Current Meter)-7, recording water velocity and temperature SBE-16 = Seabird Seacat, recording water temperature and conductivity SBE-37 = Seabird Microcat, recording water temperature and conductivity. Some instruments also record pressure. ------------------------------------------------------- For science overview, (and links to articles, including on line access to cruise report) please see: http://psc.apl.washington.edu/CBL.html For queries, please contact: Dr Rebecca A Woodgate Applied Physics Laboratory Tel: (206)-221-3268 University of Washington Fax: (206)-616-3142 1013 NE 40th Street, Seattle Email: woodgate@apl.washington.edu Washington 98105-6698, U.S.A. http://psc.apl.washington.edu/HLD ===================================================================== Meta data ========= 1) Platform: 3 oceanographic moorings (CBLA, CBLB, CBLC), deployed and recovered from USCGC Polar Star during cruise CBL2002 (AWS-02-II) 2) Project title: The Influence of the Mendeleev Ridge and Chukchi Borderland on the Large-scale Circulation of the Arctic Ocean. (Short title:The Chukchi Borderland (CBL) Arctic Crossroads) 3) Data collection dates: August 2002 to September 2002 4) PIs: Rebecca Woodgate (woodgate@apl.washington.edu) Knut Aagaard (aagaard@apl.washington.edu) Jim Swift (jswift@ucsd.edu) Bill Smethie (bsmeth@ldeo.columbia.edu) Kelly Falkner (kfalkner@coas.oregonstate.edu) 5) Data collection method: Subsurface physical oceanographic moorings 6) Data calibration method: Pre and post calibrated by the manufacturer Post calibrations used for SBE16 calibration Pre calibration used for SBE37 calibration Calibration coefficients in header of files Velocity corrected from magnetic direction to true direction, using declination given in header file 7) Instrumentation used: Aanderaa RCM-7 Current meters, sampling hourly (*_RCM*) Seabird SBE16 meters, sampling every 30min (*_SBE16*) Seabird SBE37 meters, sampling every 30min (*_SBE37*) 8) Quality control procedures: Data checked against other instruments and CTD casts 9) Data format: Ascii, format given in header, is: RCM data format: nnnnn Year Mn Dy Hr Mi Ref Praw Pres Temp Cond Salt DirTr Speed Julianday nnnnn yyyy mm dd hh mm nnnn dBar dBar degC S/m psu degTr cm/s dddd.ddddd 123456789-123456789-123456789-123456789-123456789-123456789-123456789-123456789- # SBE data format: nnnnn Year Mn Dy Hr Mi Praw Pdep Depth Temp Cond Salt Julianday nnnnn yyyy mm dd hh mm dBar dBar m degC S/m psu dddd.ddddd 123456789-123456789-123456789-123456789-123456789-123456789-123456789-123456789- # 10) Data collection problems: Problems are noted in header files. CBLA_RCM_11459_0110m.out - RCM leaked, terminating instrument record after 1 day. - Conductivity data bad. CBLA_RCM_11454_0384m.out - Conductivity data bad. CBLC_SBE37_2316_1604m.out - large drift on pressure sensor invalidates data 11) Other related data sets: CBL2002 CTD and Bottle data set - set of 126 CTD-O casts with L-ADCP, with water sampling for salinity, oxygen, nutrients, CFCs, O18, Ba, He, I-129, Cs-137 (contact: Rebecca Woodgate or Jim Swift) XBT data from CBL2002 cruise (contact: Rebecca Woodgate) 12) Conditions for use or citation: Data freely available Please, as a courtesy, contact the PIs before using these data 13) Data qualifications or warnings: RCM data - standard Aanderaa limitations apply - estimated accuracy 1 cm/s in speed, 5 deg in direction SBE data - standard Seabird limitations apply - estimated accuracy 0.02 deg C and 0.0012 S/m (0.02PSU) 14) Grant numbers: NSF: Arctic Natural Sciences OPP-0117480 15) Sample repository locations: Not applicable ================================================================= FILE LISTING ============= - 16 data files - 1 readme file (this file) - 2 cruise report files Name Size/bytes CBLA_RCM_11454_0384m.out 60209 CBLA_RCM_11459_0110m.out 9748 CBLA_SBE16_1698_0111m.out 101961 CBLA_SBE16_2265_0385m.out 101961 CBLB_RCM_04295_0116m.out 60333 CBLB_RCM_06493_0848m.out 60333 CBLB_RCM_11458_0378m.out 60423 CBLB_SBE16_1700_0117m.out 98390 CBLB_SBE16_2263_0379m.out 98485 CBLC_RCM_06498_0819m.out 60448 CBLC_RCM_06546_0100m.out 60419 CBLC_RCM_06926_0369m.out 60419 CBLC_RCM_11135_1603m.out 61137 CBLC_SBE16_1400_0370m.out 101745 CBLC_SBE16_1935_0101m.out 101961 CBLC_SBE37_2316_1604m.out 103287 CBLmooringdata.readme.txt 6457 CBL2002cruisereport.pdf 1191000 CBL2002cruiseappendices.pdf 3874000 =================================================================