Attributes { depth { String long_name "depth"; String units "meters"; String positive "down"; Float64 data_min 40.00000000000000; Float64 data_max 120.0000000000000; } time { String long_name "time"; String units "minutes since 1980-1-1 0:0:0"; Int32 data_min 6311520; Int32 data_max 6838499; } decday { String long_name "Decimal Day"; String units "days relative to 1992-1-1 0:0:0"; Float64 data_min 303.9544200000000; Float64 data_max 393.8301600000000; } woce_date { String long_name "WOCE date"; String units "yyyymmdd UTC"; Int32 data_min 19921030; Int32 data_max 19930128; } woce_time { String long_name "WOCE time of day"; String units "hhmmss.dd UTC"; Float64 data_min 0.000000000000000; Float64 data_max 235959.1200000000; } longitude { String long_name "longitude"; String units "degrees_E"; Float64 data_min -74.06560000000000; Float64 data_max -64.57150000000000; Float64 valid_min -180.0000000000000; Float64 valid_max 180.0000000000000; String instrument "nominally GPS"; Float32 _FillValue 99999.0000; String C_format "%9.4f"; String F_format "f9.4"; } latitude { String long_name "latitude"; String units "degrees_N"; Float64 data_min 32.21560000000000; Float64 data_max 40.64730000000000; Float64 valid_min -90.00000000000000; Float64 valid_max 90.00000000000000; String instrument "nominally GPS"; Float32 _FillValue 99999.0000; String C_format "%8.4f"; String F_format "f8.4"; } trans_temp { String long_name "ADCP transducer temperature"; String units "degrees C"; Float64 data_min 3.600000000000000; Float64 data_max 26.30000000000000; Float32 _FillValue 99999.0000; String instrument "nominally thermistor"; Float64 valid_min 0.000000000000000; Float64 valid_max 40.00000000000000; String C_format "%4.1f"; String F_format "f4.1"; } sd_trans_temp { String long_name "transducer temperature (standard deviation)"; String units "degrees C"; Float64 data_min 0.000000000000000; Float64 data_max 2.830000000000000; Float32 _FillValue 99999.0000; String instrument "nominally thermistor"; Float64 valid_min 0.000000000000000; Float64 valid_max 40.00000000000000; String C_format "%5.2f"; String F_format "f5.2"; } ship_u { String long_name "eastward ship speed (hourly mean)"; String units "meters per second"; Float64 data_min -7.200000000000000; Float64 data_max 7.000000000000000; Float32 _FillValue 99999.0000; String instrument "optimized position based on ADCP and GPS"; Float64 valid_min -15.00000000000000; Float64 valid_max 15.00000000000000; String C_format "%5.1f"; String F_format "f5.1"; } sd_ship_u { String long_name "eastward ship speed (standard deviation)"; String units "meters per second"; Float64 data_min 0.000000000000000; Float64 data_max 2.660000000000000; Float32 _FillValue 99999.0000; String instrument "optimized position based on ADCP and GPS"; Float64 valid_min 0.000000000000000; Float64 valid_max 15.00000000000000; String C_format "%5.2f"; String F_format "f5.2"; } ship_v { String long_name "northward ship speed (hourly mean)"; String units "meters per second"; Float64 data_min -7.700000000000000; Float64 data_max 7.500000000000000; Float32 _FillValue 99999.0000; String instrument "optimized position based on ADCP and GPS"; Float64 valid_min -15.00000000000000; Float64 valid_max 15.00000000000000; String C_format "%5.1f"; String F_format "f5.1"; } sd_ship_v { String long_name "northward ship speed (standard deviation)"; String units "meters per second"; Float64 data_min 0.000000000000000; Float64 data_max 0.000000000000000; Float32 _FillValue 99999.0000; String instrument "optimized position based on ADCP and GPS"; Float64 valid_min 0.000000000000000; Float64 valid_max 15.00000000000000; String C_format "%5.2f"; String F_format "f5.2"; } u { String long_name "eastward absolute current velocity (hourly mean)"; String units "meters per second"; Float64 data_min -1.589000000000000; Float64 data_max 4.099000000000000; Float32 _FillValue 99999.0000; String instrument "ADCP/GPS"; Float64 valid_min -9.900000000000000; Float64 valid_max 9.900000000000000; String C_format "%6.3f"; String F_format "f6.3"; } v { String long_name "northward absolute current velocity (hourly mean)"; String units "meters per second"; Float64 data_min -4.030000000000000; Float64 data_max 1.926000000000000; Float32 _FillValue 99999.0000; String instrument "ADCP/GPS"; Float64 valid_min -9.900000000000000; Float64 valid_max 9.900000000000000; String C_format "%6.3f"; String F_format "f6.3"; } NC_GLOBAL { String WOCE_Version "3.0"; String CONVENTIONS "COARDS/WOCE"; String DATA_TYPE "TRACK"; String DATA_SUB_TYPE "SADCP"; String INST_TYPE "SADCP"; String DATA_ORIGIN " UNIVERSITY OF RHODE ISLAND"; String EXPOCODE "none"; String WOCE_ID "none"; String CRUISE_NAME " OLE92.FALL "; String DAC_ID "00090"; String FILE_SOURCE "00090.sub"; String file_date "12 Apr 2002"; String TIME_INTERVAL_BETWEEN_DATA "hour"; String TIME_AVERAGING_SCHEME "mean centered on hour"; String DEPTH_INTERVAL_BETWEEN_DATA "10 meters"; String DEPTH_AVERAGING_SCHEME "mean centered on given depth"; String SHIP_POSITION "average over hour"; String doc_000 "The following time, space, and depth ranges for this cruise"; String doc_001 "are based on the complete high-resolution data set and does"; String doc_002 "not agree exactly with the ranges of this averaged subset."; String doc_003 " #DATA_DATES: 1992/10/30 22:16:00 --- to --- 1993/01/28 20:18:00"; String doc_004 " #LON_RANGE: 74.08 W --- to --- 64.57 W"; String doc_005 " #LAT_RANGE: 32.20 N --- to --- 40.66 N"; String doc_006 " #DEPTH_RANGE: 13 --- to --- 408 m"; String doc_007 " #SAC_CRUISE_ID: 00090 "; String doc_008 " #PLATFORM_NAME: M.V. Oleander (commercial container vessel)"; String doc_009 " #PRINCIPAL_INVESTIGATOR_NAME: T.Rossby, E.Gottlieb, G.Schwartze "; String doc_010 " #PI_INSTITUTION: University of Rhode Island"; String doc_011 " #PI_COUNTRY: USA"; String doc_012 " #PROJECT: The Oleander Project"; String doc_013 " #CRUISE_NAME: ole92.fall "; String doc_014 " #PORTS: Port Elizabeth, New Jersey --- to --- Hamilton, Bermuda"; String doc_015 " #GEOGRAPHIC_REGION: Northwest Atlantic Ocean"; String doc_016 " #PROCESSED_BY: Erik Gottlieb"; String doc_017 " #NAVIGATION: gps"; String doc_018 " #QUALITY_NAV: good"; String doc_019 " #GENERAL_INFORMATION:"; String doc_020 "CRUISE NOTES"; String doc_021 " CHIEF SCIENTIST ON SHIP : none"; String doc_022 " SIGNIFICANT DATA GAPS :*92/11/13-92/11/19 software failure "; String doc_023 " *92/12/22-92/12/25 Christmas holiday "; String doc_024 " *92/12/29-93/ 1/ 7 deck unit shut off "; String doc_025 " *93/ 1/11-93/ 1/14 cable plug stressed"; String doc_026 " * indicates total data loss"; String doc_027 " SPECIAL SHIP TRACK PATTERNS : weekly ship schedule is as follows:"; String doc_028 " Friday - leave Elizabeth (outbound) "; String doc_029 " Sunday - arrive Hamilton"; String doc_030 " Tuesday - leave Hamilton (inbound)"; String doc_031 " Thursday - arrive Elizabeth"; String doc_032 " COMMENTS : The only significant deviations from"; String doc_033 " the weekly schedule are due to bad"; String doc_034 " weather and port conflicts, and typically"; String doc_035 " are no more than 24 hours. "; String doc_036 "ADCP INSTRUMENTATION"; String doc_037 " MANUFACTURER : RD Instruments (RDI)"; String doc_038 " HARDWARE MODEL : RD-VM150"; String doc_039 " SERIAL NUMBERS : ADCP = 536 / XDUC = 449"; String doc_040 " FIRMWARE VERSION : 17.10 "; String doc_041 " "; String doc_042 " TRANSMIT FREQUENCY : 153 kHz"; String doc_043 " TRANSDUCER CONFIGURATION : JANUS CONCAVE"; String doc_044 " ACOUSTIC BEAM WIDTH :"; String doc_045 " TRANSDUCER BEAM ANGLE : 30 deg."; String doc_046 " COMMENTS :"; String doc_047 " "; String doc_048 "ADCP INSTALLATION"; String doc_049 " METHOD/DESCRIPTION OF THE"; String doc_050 " ATTACHMENT TO THE HULL : A seachest (well) is flush-welded"; String doc_051 " to the vessel's hull, so that the"; String doc_052 " seachest bottom is flush with the"; String doc_053 " hull's outer surface (the vessel bottom"; String doc_054 " is perfectly flat and smooth with no"; String doc_055 " protuberances). The transducer is"; String doc_056 " mounted on a top-hat which is bolted"; String doc_057 " on top of the seachest, such that the "; String doc_058 " transducer bottom is slightly above"; String doc_059 " the level of the seachest bottom. "; String doc_060 " For transducer removal, a water-tight"; String doc_061 " cover plate is bolted over the seachest"; String doc_062 " opening."; String doc_063 " LOCATION/DEPTH ON HULL : The seachest is located several meters"; String doc_064 " foreward and starboard of the vessel's"; String doc_065 " center point. Vessel draught is load-"; String doc_066 " dependent, and averages about 4.9 m"; String doc_067 " Hamilton-bound (outbound) and 4.4 m "; String doc_068 " Elizabeth-bound (inbound)."; String doc_069 " Within the database, transducer depth is"; String doc_070 " set to a mean nominal depth of 4 m for "; String doc_071 " all legs."; String doc_072 " REPEATABLE ATTACHMENT : YES "; String doc_073 " DATE OF MOST RECENT ATTACH. : 94/4/29"; String doc_074 " ACOUSTIC WINDOW : NO"; String doc_075 " COMMENTS : vessel length 117.5 m "; String doc_076 " breadth 19.8 m"; String doc_077 " weight 4950 tonnes "; String doc_078 " speed 16 knots"; String doc_079 " "; String doc_080 "ADCP INSTRUMENT CONFIGURATION"; String doc_081 ""; String doc_082 " ELZ NAR NBN (NYB) NBS SLS NWA BER"; String doc_083 " DEPTH RANGE UPPER (m) : 9.5 9.5 9.5 (14) 11 20 20 9.5 "; String doc_084 " DEPTH RANGE LOWER (m) :15.5 15.5 47.5 (158) 107 404 404 15.5 "; String doc_085 " BIN LENGTH (m) : 1 1 1 (4) 2 8 8 1"; String doc_086 " NUMBER OF BINS : 8 8 40 (38) 50 50 50 8"; String doc_087 " TRANSMIT PULSE LENGTH (m) : 1 1 2 (4) 4 16 16 1"; String doc_088 " BOTTOM TRACKING : no no yes (yes) yes no no no"; String doc_089 " BLANKING INTERVAL : ... 4 m ..."; String doc_090 " ENSEMBLE AVERAGING INTERVAL : ... 300 s ..."; String doc_091 " SOUND SPEED CALCULATION : ... FUNCTION OF TEMP AT TRANSDUCER ..."; String doc_092 " DIRECT COMMANDS : FH00001 E0005020099 CF25"; String doc_093 " COMMENTS : A user exit program automatically resets"; String doc_094 " the instrument configuration based upon"; String doc_095 " geographic location. The locations are"; String doc_096 " Port Elizabeth (ELZ), Verrazano Narrows"; String doc_097 " (NAR), New York Bight (NYB), Slope Sea"; String doc_098 " (SLS), Northwest Atlantic (NWA), and "; String doc_099 " Bermuda (BER). NYB and SLS are separated"; String doc_100 " by the shelf break, and SLS and NWA are"; String doc_101 " separated by the mean location of the Gulf"; String doc_102 " Stream. After 93/10/22 the NYB region"; String doc_103 " is split into north and south regions"; String doc_104 " (NBN and NBS). Prior to spring 1993"; String doc_105 " pulse length, bin length, and number of"; String doc_106 " bins were varied to find the optimal "; String doc_107 " value listed above. During 93/6/25-"; String doc_108 " 93/8/12 a small region named test near"; String doc_109 " the center of the NWA region and"; String doc_110 " having an ensemble interval of several"; String doc_111 " seconds was used to observe the effects"; String doc_112 " of waves on data quality. "; String doc_113 " "; String doc_114 "ADCP DATA ACQUISITION SYSTEM"; String doc_115 " SOFTWARE DEVELOPERS : RDI, Chris Humphries, Charlie Flagg,"; String doc_116 " and Joe Lewkowicz"; String doc_117 " SOFTWARE VERSIONS : DAS 2.48"; String doc_118 " DATA LOGGER, MAKE/MODEL : Oak Microsystems (12 MHz 386sx)"; String doc_119 " ADCP/LOGGER COMMUNICATION : serial"; String doc_120 " USER BUFFER VERSION : ASCII"; String doc_121 " CLOCK : PC clock"; String doc_122 " COMMENTS :"; String doc_123 " "; String doc_124 "SHIP HEADING"; String doc_125 " INSTRUMENT MAKE/MODEL : Anschutz"; String doc_126 " SYNCHRO OR STEPPER : synchro before 93/6/17, stepper after "; String doc_127 " SYNCHRO RATIO : 360:1"; String doc_128 " COMPENSATION APPLIED : NO"; String doc_129 " GPS ATTITUDE SYSTEM : Ashtech 3DF installed 94/9/24 "; String doc_130 " LOCATION OF ANTENNAS : Array located on port forward corner"; String doc_131 " of flying bridge, in an L shape"; String doc_132 " with about 3.5 m baseline distance"; String doc_133 " between antennas. "; String doc_134 " RIGID ATTACHMENT : YES - stainless steel rods clamped "; String doc_135 " to brackets welded to rail. "; String doc_136 " LOGGING RATE : 1 per sec"; String doc_137 " COMMENTS : Prior to 93/4/15 the gyrocompass"; String doc_138 " exhibited resets , where it would"; String doc_139 " unexpectedly slew to 0 but then"; String doc_140 " continue to track vessel heading."; String doc_141 " Since the vessel steams a very nearly"; String doc_142 " constant heading, the resets were"; String doc_143 " corrected for by taking the difference"; String doc_144 " in headings before and after"; String doc_145 " the reset and applying that difference"; String doc_146 " as a heading misalignment angle. "; String doc_147 " During 92/10/30-93/2/27 calibration "; String doc_148 " values for heading misalignment and "; String doc_149 " scale factor were obtained directly "; String doc_150 " from bottom tracking each trip. "; String doc_151 " Between 93/2/27-93/4/15 data are of"; String doc_152 " very poor quality due to bad weather"; String doc_153 " (see QUALITY ASSESSMENT ) and "; String doc_154 " have not been calibrated. The"; String doc_155 " reset problem was solved by using a"; String doc_156 " separate repeater and computer to "; String doc_157 " bypass the DAS-aquired gyrocompass"; String doc_158 " heading. For calibration method"; String doc_159 " after 93/4/15, see CALIBRATION . "; String doc_160 " "; String doc_161 "ANCILLARY MEASUREMENTS"; String doc_162 " SURFACE TEMP AND SALINITY : thermistor at transducer; no salinity"; String doc_163 " PITCH/ROLL MEASUREMENTS : none"; String doc_164 " HYDRO CAST MEASUREMENTS : none"; String doc_165 " BIOMASS DETERMINATION : YES - Using AGCAVE.COM"; String doc_166 " DATE OF LAST CALIBRATION :"; String doc_167 " CALIBRATION COEFFICIENTS :"; String doc_168 " BEAM-AVERAGED AGC AVAILABLE?: YES "; String doc_169 " CALIBRATION NET TOWS? : YES - Plankton recorder towed one"; String doc_170 " trip per month"; String doc_171 " COMMENTS :"; String doc_172 ""; String doc_173 "NAVIGATION"; String doc_174 " TRANSIT : NO"; String doc_175 " GPS : YES"; String doc_176 " MAKE/MODEL : Magnavox MX4200"; String doc_177 " SELECTIVE AVAILABILITY : YES"; String doc_178 " P-CODE : NO"; String doc_179 " DIFFERENTIAL : NO"; String doc_180 " SAMPLE INTERVAL : 1 per sec"; String doc_181 " LOCATION OF ANTENNA"; String doc_182 " RELATIVE TO TRANSDUCER : antenna on flying bridge, roughly"; String doc_183 " 80 m aft, 8 m to port"; String doc_184 " TIME OBTAINED RELATIVE TO"; String doc_185 " START/END OF ENSEMBLE : end"; String doc_186 " AVERAGING/EDITING APPLIED : "; String doc_187 " LOGGED WITH ADCP DATA : YES - user exit program"; String doc_188 " LOGGED INDEPENDENTLY : NO"; String doc_189 " COMMENTS :"; String doc_190 " OTHER :"; String doc_191 ""; String doc_192 "ADCP DATA PROCESSING/EDITING"; String doc_193 " PERSONNEL IN CHARGE : E. Gottlieb"; String doc_194 " SOUND SPEED CORRECTIONS : applied using transducer temperature"; String doc_195 " DATE OF PROCESSING : 1993-95"; String doc_196 " NOTABLE SCATTERING LAYERS : almost every trip a vertically migrating"; String doc_197 " scattering layer is observed just off"; String doc_198 " the shelf break"; String doc_199 " COMMENTS :"; String doc_200 ""; String doc_201 "CALIBRATION"; String doc_202 " GYROCOMPASS CORRECTION : YES - from bottom tracking"; String doc_203 " WATER TRACK METHOD : NO - ship never stops during trip "; String doc_204 " BOTTOM TRACK METHOD : YES"; String doc_205 " AMOUNT OF TIME AVAILABLE : about 6 hours/trip (=about 12.5%)"; String doc_206 " TOTAL No. CALIBRATION PTS: one/trip (after reducing residuals)"; String doc_207 " TIME VARIANT :"; String doc_208 " VELOCITY DEPENDENT : MAYBE - has not yet been observed"; String doc_209 " HEADING DEPENDENT : YES - depending on outbound (heading"; String doc_210 " about 135 deg. T) or inbound (about 315)"; String doc_211 " OUTBOUND INBOUND"; String doc_212 " NUMBER OF TRIPS : 21 19"; String doc_213 " AMPLITUDE MIN : 1.001 1.001 "; String doc_214 " AMPLITUDE MEAN : 1.014 1.044 "; String doc_215 " AMPLITUDE MAX : 1.047 1.230 "; String doc_216 " AMPLITUDE STD : 0.012 0.055 "; String doc_217 " PHASE MIN : -1.61 0.21"; String doc_218 " PHASE MEAN : -1.36 0.56"; String doc_219 " PHASE MAX : -0.74 1.05"; String doc_220 " PHASE STD : 0.21 0.19"; String doc_221 " FINAL SELECTION AMPLITUDE : 1.0 1.0"; String doc_222 " FINAL SELECTION PHASE : -1.4 0.6"; String doc_223 " AGREEMENT WITH PREVIOUS"; String doc_224 " CRUISES : see statistics above"; String doc_225 " COMMENTS : Bottom tracking is done for about"; String doc_226 " six hours each trip (while traversing"; String doc_227 " the shelf), and after reducing residuals"; String doc_228 " a single value of amplitude and phase"; String doc_229 " is obtained for each trip. Statistics "; String doc_230 " are done for all available trips (see "; String doc_231 " above) and the final selection values"; String doc_232 " (assumed constant over the entire trip)"; String doc_233 " have been used to correct all trips. "; String doc_234 " For calibration method prior to "; String doc_235 " 93/4/16 see SHIP HEADING ."; String doc_236 ""; String doc_237 "NAVIGATION CALCULATION"; String doc_238 " NAVIGATION USED : gps"; String doc_239 " REFERENCE LAYER DEPTH RANGE : bins 5 - 15"; String doc_240 " FILTERING METHOD FOR"; String doc_241 " SMOOTHING REFERENCE LAYER"; String doc_242 " VELOCITY (FORM/WIDTH) : Blackman window, half-width = 0.5 hour"; String doc_243 " FINALIZED SHIP VEL/POSITIONS"; String doc_244 " STORED IN DATABASE : YES"; String doc_245 " COMMENTS :"; String doc_246 ""; String doc_247 "QUALITY ASSESSMENT"; String doc_248 " ON-STATION VS. UNDERWAY : All data underway, no stations. Quality"; String doc_249 " ranges from excellent to poor depending"; String doc_250 " on load and sea state."; String doc_251 " VECTOR, CONTOUR, STICK PLOTS: excellent to poor"; String doc_252 " COMMENTS : Data quality is dependent upon load"; String doc_253 " and sea state, most likely due to"; String doc_254 " signal attenuation by a bubble layer"; String doc_255 " under the hull (the hull bottom is"; String doc_256 " perfectly flat). For a quiet seas "; String doc_257 " outbound trips are of excellent quality"; String doc_258 " and inbound are fair; for very heavy "; String doc_259 " seas most data are poor. For moderate"; String doc_260 " seas overall quality ranges from good"; String doc_261 " to marginal. "; String doc_262 " "; String doc_263 "REFERENCES (DATA REPORTS,ETC) : "; String doc_264 ""; String doc_265 " Gottlieb, Rossby, Schwartze, Cornillon, and Flagg (1994). The Oleander"; String doc_266 " Project First-Year Results: Gulf Stream ADCP Measurements from"; String doc_267 " October 1992 to October 1993. Proceedings from the Atlantic "; String doc_268 " Climate Change Program meeting, May 1994, Princeton, NJ. ed."; String doc_269 " Anne-Marie Wilburn."; String doc_270 ""; String doc_271 " Gottlieb, Rossby, Schwartze, and Flagg (1995). The Oleander Project:"; String doc_272 " Measuring the Gulf Stream using and ADCP mounted on a Volunteer"; String doc_273 " Observing Ship. Proceedings from the Atlantic Climate Change "; String doc_274 " Program meeting, May 1995, Miami, Florida. ed. Anne-Marie Wilburn."; String doc_275 ""; String doc_276 " (both available upon request from Anne-Marie Wilburn, AOML/NOAA,"; String doc_277 " 4301 Rickenbacker Cswy, Miami, FL 33149 -or- wilburn@aoml.erl.gov)"; String doc_278 ""; } DODS_EXTRA { String Unlimited_Dimension "time"; } }