{ "type": "Collection", "id": "Platform2902752", "stac_version": "1.1.0", "description": "Argo float", "links": [ { "rel": "root", "href": "../catalog.json", "type": "application/json" }, { "rel": "cite-as", "href": "https://doi.org/10.17882/42182" }, { "rel": "icon", "href": "https://argo.ucsd.edu/wp-content/uploads/sites/361/2020/07/Argo_logo_tallspacer.png", "type": "image/png", "title": "Argo Icon" }, { "rel": "related", "href": "https://fleetmonitoring.euro-argo.eu/float/2902752", "type": "text/html", "title": "Fleet monitoring euro-argo website" }, { "rel": "parent", "href": "../catalog.json", "type": "application/json" } ], "stac_extensions": [ "https://stac-extensions.github.io/scientific/v1.0.0/schema.json", "https://stac-extensions.github.io/file/v2.1.0/schema.json" ], "parameters": [ "PSAL", "TEMP", "PRES", "DOXY", "CHLA", "BBP700", "CDOM", "DOWN_IRRADIANCE412", "NITRATE", "DOWN_IRRADIANCE443", "DOWN_IRRADIANCE490", "DOWNWELLING_PAR" ], "instruments": [ "CTD_CNDC", "CTD_TEMP", "CTD_PRES", "OPTODE_DOXY", "FLUOROMETER_CHLA", "BACKSCATTERINGMETER_BBP700", "FLUOROMETER_CDOM", "RADIOMETER_DOWN_IRR412", "SPECTROPHOTOMETER_NITRATE", "RADIOMETER_DOWN_IRR443", "RADIOMETER_DOWN_IRR490", "RADIOMETER_PAR" ], "mission": "CHINA ARGO PROJECT", "sensors": [ { "name": "CTD_CNDC", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/CTD_CNDC/", "maker": "SBE", "model": "SBE41CP_V7.2.5", "serial_no": "9210" }, { "name": "CTD_TEMP", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/CTD_TEMP/", "maker": "SBE", "model": "SBE41CP_V7.2.5", "serial_no": "9210" }, { "name": "CTD_PRES", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/CTD_PRES/", "maker": "KISTLER", "model": "KISTLER_2900PSIA", "serial_no": "4940410" }, { "name": "OPTODE_DOXY", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/OPTODE_DOXY/", "maker": "AANDERAA", "model": "AANDERAA_OPTODE_4330", "serial_no": "2781" }, { "name": "FLUOROMETER_CHLA", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/FLUOROMETER_CHLA/", "maker": "WETLABS", "model": "ECO_FLBBCD", "serial_no": "4908" }, { "name": "BACKSCATTERINGMETER_BBP700", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/BACKSCATTERINGMETER_BBP700/", "maker": "WETLABS", "model": "ECO_FLBBCD", "serial_no": "4908" }, { "name": "FLUOROMETER_CDOM", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/FLUOROMETER_CDOM/", "maker": "WETLABS", "model": "ECO_FLBBCD", "serial_no": "4908" }, { "name": "RADIOMETER_DOWN_IRR412", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/RADIOMETER_DOWN_IRR412/", "maker": "SATLANTIC", "model": "SATLANTIC_OCR504_ICSW", "serial_no": "547" }, { "name": "SPECTROPHOTOMETER_NITRATE", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/SPECTROPHOTOMETER_NITRATE/", "maker": "SATLANTIC", "model": "SUNA_V2", "serial_no": "1032" }, { "name": "RADIOMETER_DOWN_IRR443", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/RADIOMETER_DOWN_IRR443/", "maker": "SATLANTIC", "model": "SATLANTIC_OCR504_ICSW", "serial_no": "547" }, { "name": "RADIOMETER_DOWN_IRR490", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/RADIOMETER_DOWN_IRR490/", "maker": "SATLANTIC", "model": "SATLANTIC_OCR504_ICSW", "serial_no": "547" }, { "name": "RADIOMETER_PAR", "URI_sensor": "http://vocab.nerc.ac.uk/collection/R25/current/RADIOMETER_PAR/", "maker": "SATLANTIC", "model": "SATLANTIC_OCR504_ICSW", "serial_no": "547" } ], "detailed_parameters": [ { "name": "PSAL", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/PSAL/", "sensor": "CTD_CNDC", "units": "psu", "accuracy": "0.005 psu", "resolution": "0.001 psu", "predeployment_calib_equation": "none", "predeployment_calib_coefficient": "none", "predeployment_calib_comment": "none" }, { "name": "TEMP", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/TEMP/", "sensor": "CTD_TEMP", "units": "degC (ITS-90)", "accuracy": "0.002 degC", "resolution": "0.001 degC", "predeployment_calib_equation": "none", "predeployment_calib_coefficient": "none", "predeployment_calib_comment": "none" }, { "name": "PRES", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/PRES/", "sensor": "CTD_PRES", "units": "dbar", "accuracy": "1.5%", "resolution": "0.1 dbar", "predeployment_calib_equation": "none", "predeployment_calib_coefficient": "none", "predeployment_calib_comment": "none" }, { "name": "DOXY", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/DOXY/", "sensor": "OPTODE_DOXY", "units": "umol/kg", "accuracy": "8 umol/kg", "resolution": "1 umol/kg", "predeployment_calib_equation": "TPHASE_DOXY=C1PHASE_DOXY-C2PHASE_DOXY; Phase_Pcorr=TPHASE_DOXY+Pcoef1*PRES/1000; CalPhase=PhaseCoef0+PhaseCoef1*Phase_Pcorr+PhaseCoef2*Phase_Pcorr^2+PhaseCoef3*Phase_Pcorr^3; MOLAR_DOXY=[((c3+c4*TEMP_DOXY)/(c5+c6*CalPhase))-1]/Ksv; Ksv=c0+c1*TEMP_DOXY+c2*TEMP_DOXY^2; O2=MOLAR_DOXY*Scorr*Pcorr; Scorr=A*exp[PSAL*(B0+B1*Ts+B2*Ts^2+B3*Ts^3)+C0*PSAL^2]; A=[(1013.25-pH2O(TEMP,Spreset))/(1013.25-pH2O(TEMP,PSAL))]; pH2O(TEMP,S)=1013.25*exp[D0+D1*(100/(TEMP+273.15))+D2*ln((TEMP+273.15)/100)+D3*S]; Pcorr=1+((Pcoef2*TEMP+Pcoef3)*PRES)/1000; Ts=ln[(298.15-TEMP)/(273.15+TEMP)]; DOXY=O2/rho, where rho is the potential density [kg/L] calculated from CTD data;", "predeployment_calib_coefficient": "c0=2.63823E-03;c1=1.12008E-04;c2=2.263160E-06;c3=1.36891E02;c4=-2.38807E-01;c5=-2.96446E01;c6=2.71829E00;", "predeployment_calib_comment": "none" }, { "name": "CHLA", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/CHLA/", "sensor": "FLUOROMETER_CHLA", "units": "mg/m^3", "accuracy": "0.08 mg/m^3", "resolution": "0.025 mg/m^3", "predeployment_calib_equation": "CHLA=(FLUORESCENCE_CHLA-DARK_CHLA)*SCALE_CHLA;", "predeployment_calib_coefficient": "SCALE_CHLA=0.0073;DARK_CHLA=45;", "predeployment_calib_comment": "none" }, { "name": "BBP700", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/BBP700/", "sensor": "BACKSCATTERINGMETER_BBP700", "units": "m^-1", "accuracy": "", "resolution": "", "predeployment_calib_equation": "BBP700=2*pi*khi *((BETA_BACKSCATTERING700-DARK_BACKSCATTERING700)*SCALE_BACKSCATTERING700-BETASW700);", "predeployment_calib_coefficient": "DARK_BACKSCATTERING700=46;SCALE_BACKSCATTERING700=1.881E-06;khi=1.076;BETASW700 (contribution of pure sea water) is calculated at 124 deg;", "predeployment_calib_comment": "Sullivan et al., 2013, Zhang et al., 2009, BETASW700 is the contribution by the pure seawater at 700nm, requiring temperature, salinity and using a depolarization of 0.039, its default value. the script can be found at http://doi.org/10.17882/42916. Reprocessed from the file provided by Andrew Bernard (Seabird) following ADMT18. This file is accessible at http://doi.org/10.17882/54520" }, { "name": "CDOM", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/CDOM/", "sensor": "FLUOROMETER_CDOM", "units": "ppb", "accuracy": "", "resolution": "", "predeployment_calib_equation": "CDOM=(FLUORESCENCE_CDOM-DARK_CDOM)*SCALE_CDOM;", "predeployment_calib_coefficient": "SCALE_CDOM=0.0898;DARK_CDOM=47;", "predeployment_calib_comment": "none" }, { "name": "DOWN_IRRADIANCE412", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/DOWN_IRRADIANCE412/", "sensor": "RADIOMETER_DOWN_IRR412", "units": "W/m^2/nm", "accuracy": "", "resolution": "", "predeployment_calib_equation": "DOWN_IRRADIANCE412=0.01*A1_412*(RAW_DOWNWELLING_IRRADIANCE412-A0_412)*lm_412;", "predeployment_calib_coefficient": "A1_412=2.04795393011e-007;A0_412=2147845284.2;lm_412=1.368;", "predeployment_calib_comment": "none" }, { "name": "NITRATE", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/NITRATE/", "sensor": "SPECTROPHOTOMETER_NITRATE", "units": "umol/kg", "accuracy": "2", "resolution": "0.01", "predeployment_calib_equation": "The sensor returns UV_INTENSITY_DARK_NITRATE and UV_INTENSITY_NITRATE(Ntrans), a subset of continuous pixels of UV_INTENSITY_NITRATE(N), N = 1 to 256. The Ntrans indices span the interval [PIXEL_START, PIXEL_END] subset of the original array (1 to 256). Thus Ntrans(i) refers to pixel N = (PIXEL_START+i-1). PIXEL_START and PIXEL_END are defined from calibration data so that the [PIXEL_START, PIXEL_END] interval is the smallest interval of pixels that correspond to the [217 nm, 250 nm] interval of wavelengths. Only a subset of the [PIXEL_START, PIXEL_END] interval is processed to compute nitrate concentration. This subset is defined as the [PIXEL_FIT_START, PIXEL_FIT_END] interval which is the smallest interval of pixels that correspond to the [217 nm, 240 nm] interval of wavelengths (thus PIXEL_FIT_START = PIXEL_START). In the following equations the data are computed for each pixel R = PIXEL_FIT_START to PIXEL_FIT_END; ABSORBANCE_SW(R)=-log10[(UV_INTENSITY_NITRATE(R)-UV_INTENSITY_DARK_NITRATE)/UV_INTENSITY_REF_NITRATE(R)]; F(R,T)=(A+B*T)*exp[(C+D*T)*(OPTICAL_WAVELENGTH_UV(R)-OPTICAL_WAVELENGTH_OFFSET)]; E_SWA_INSITU(R)=E_SWA_NITRATE(R)*F(R,TEMP)/F(R,TEMP_CAL_NITRATE); ABSORBANCE_COR_NITRATE(R)=ABSORBANCE_SW(R)-(E_SWA_INSITU(R)*PSAL)*[1-(0.026*PRES/1000)]; Perform a multilinear regression to get MOLAR_NITRATE with estimated ABSORBANCE_COR_NITRATE(R) with ABSORBANCE_COR_NITRATE(R)=BASELINE_INTERCEPT+BASELINE_SLOPE*OPTICAL_WAVELENGTH_UV(R)+MOLAR_NITRATE*E_NITRATE(R); NITRATE=MOLAR_NITRATE/rho, where rho is the potential density [kg/L] calculated from CTD data.", "predeployment_calib_coefficient": "n/a", "predeployment_calib_comment": "none" }, { "name": "DOWN_IRRADIANCE443", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/DOWN_IRRADIANCE443/", "sensor": "RADIOMETER_DOWN_IRR443", "units": "W/m^2/nm", "accuracy": "", "resolution": "", "predeployment_calib_equation": "DOWN_IRRADIANCE443=0.01*A1_443*(RAW_DOWNWELLING_IRRADIANCE443-A0_443)*lm_443;", "predeployment_calib_coefficient": "A1_443=2.03709877306e-007;A0_443=2148447413.2;lm_443=1.410;", "predeployment_calib_comment": "none" }, { "name": "DOWN_IRRADIANCE490", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/DOWN_IRRADIANCE490/", "sensor": "RADIOMETER_DOWN_IRR490", "units": "W/m^2/nm", "accuracy": "", "resolution": "", "predeployment_calib_equation": "DOWN_IRRADIANCE490=0.01*A1_490*(RAW_DOWNWELLING_IRRADIANCE490-A0_490)*lm_490;", "predeployment_calib_coefficient": "A1_490=2.10083939975e-007;A0_490=2148062312.8;lm_490=1.365;", "predeployment_calib_comment": "none" }, { "name": "DOWNWELLING_PAR", "URI_parameter": "http://vocab.nerc.ac.uk/collection/R03/current/DOWNWELLING_PAR/", "sensor": "RADIOMETER_PAR", "units": "microMoleQuanta/m^2/sec", "accuracy": "", "resolution": "", "predeployment_calib_equation": "DOWNWELLING_PAR=A1_PAR*(RAW_DOWNWELLING_PAR-A0_PAR)*lm_PAR;", "predeployment_calib_coefficient": "A1_PAR=3.34794820749e-006;A0_PAR=2147657167.9;lm_PAR=1.359;", "predeployment_calib_comment": "none" } ], "sci:doi": "10.17882/42182", "sci:citation": "Argo (2024). Argo float data and metadata from Global Data Assembly Centre (Argo GDAC). SEANOE. https://doi.org/10.17882/42182", "title": "Platform2902752", "extent": { "spatial": { "bbox": [ null ] }, "temporal": { "interval": [ [ null, null ] ] } }, "license": "CC-BY-4.0", "providers": [ { "name": "n/a", "roles": [ "producer" ] }, { "name": "CSIO", "roles": [ "processor" ] }, { "name": "CORIOLIS", "roles": [ "host" ] } ], "assets": { "meta.nc": { "href": "https://data-argo.ifremer.fr/dac/csio/2902752/2902752_meta.nc", "type": "application/x-netcdf", "title": "metadata file", "file:size": 177968, "roles": [ "metadata" ] } } }