NOAA ERDDAP
Easier access to scientific data
log in | ?    
Brought to you by NOAA NMFS SWFSC ERD    

ERDDAP > griddap > Data Access Form ?

Dataset Title:  Chlorophyll, NOAA VIIRS-SNPP, Near Real-Time, Global, Level 3, 2020-present,
EXPERIMENTAL, Daily
Subscribe RSS
Institution:  NOAA NESDIS STAR   (Dataset ID: nesdisVHNchlaDaily)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      367    1 day 0h 15m 44s (uneven)
  < slider >
 altitude (m) ?      1    (just one value)
  < slider >
 latitude (degrees_north) ?      4788    -0.0375 (even)
  < slider >
 longitude (degrees_east) ?      9602    0.0375 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables) 
 chlor_a (Chlorophyll Concentration, OC3 Algorithm, mg m^-3) ?

File type: (more information)

(Documentation / Bypass this form) ?
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6267824e+9, 1.6587504e+9;
    String axis "T";
    String bounds "baseline_bounds";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  altitude {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "up";
    Float64 actual_range 0.0, 0.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Altitude";
    String positive "up";
    String standard_name "altitude";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -89.75625000000002, 89.75625000000001;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -180.01875, 180.01874999999998;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  chlor_a {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String cw_atmospheric_correction "NOAA MECB BMW Atmospheric Correction";
    Int32 cw_fraction_digits 16;
    String cw_processing_algorithm "OC3 Algorithm";
    String cw_product_status "Experimental";
    String grid_mapping "coord_ref";
    String ioos_category "Ocean Color";
    String long_name "Chlorophyll Concentration, OC3 Algorithm";
    Float32 missing_value NaN;
    String references "O'Reilly J. E. et al. (1998), Ocean color chlorophyll algorithms for SeaWiFS, J. Geophys. Res., 103(C11), 2493724953";
    String standard_name "mass_concentration_of_chlorophyll_in_sea_water";
    String units "mg m^-3";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "coastwatch.info@noaa.gov";
    String creator_name "NOAA/NESDIS/STAR";
    String creator_type "group";
    String creator_url "http://www.star.nesdis.noaa.gov/socd/mecb/color/";
    String cw_orbit_type "ascending";
    String cw_pass_type "day/night";
    String cw_processing_version "NOAA_MECB_BMW NRT_IDPS";
    String cw_projection "Geographic";
    String cw_satellite "S-NPP";
    String cw_sensor "VIIRS";
    String cw_software_name "MSL12";
    String cw_software_version "1.30";
    Int32 cw_swath_sync_lines 16, 16, 16;
    String cw_viirs_band_naming_convention "OBPG";
    String date_created "2022-07-25T15:36:33Z";
    Float64 Easternmost_Easting 180.01874999999998;
    Float64 geospatial_lat_max 89.75625000000001;
    Float64 geospatial_lat_min -89.75625000000002;
    Float64 geospatial_lat_resolution 0.03750000000000001;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 180.01874999999998;
    Float64 geospatial_lon_min -180.01875;
    Float64 geospatial_lon_resolution 0.037500000000000006;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "up";
    String geospatial_vertical_units "m";
    String history 
"[MSL12 1.30] /data/data055/operational/routine/bin/msl12_x64a par=/data/data097/lide.jiang/worktmp/MSL20220724/V2022205024201_NPP_NRTNIR.par
NOAA_MECB_BMW NRT_IDPS
SVM01_npp_d20220724_t0242018_e0243260_b55639_c20220724032611640141_oebc_ops.h5,S19461993_COADS_GEOS1.MET_noon,,,S19891991_TOMS.OZONE,,,radcor_modisa_nocor.hdf,polcor_viirsn_22bands_oc.hdf,landmask_USGS_15arc.nc,watermask.dat,digital_elevation_map.hdf,ice_mask.hdf,no2_climatology.hdf,alpha510_climatology.hdf,taua865_climatology.hdf,GMTCO_npp_d20220724_t0242018_e0243260_b55639_c20220724032453961768_oebc_ops.h5,
/home/pub/svc_cwatch/aps/aps/aps/share/coastwatch/bin/netcdf_cf_ingest V2022205024201_NPP_NRTNIR_L2.nc /home/pub/svc_cwatch/aps/aps_v/aps/work/VRSVCW.B2022205.024204.hdf
[cwutils 3.6.1.3 20201118_155352] cwregister2 -M South750UW4590Geographic.hdf VRSVCW.B2022205.024204.hdf VRSVCW.B2022205.024204.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwgraphics VRSVCW.B2022205.024204.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_v/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_024204_UW00_edgemask_masked.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask_nlw=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_v/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_024204_UW00_edgemask_masked.hdf
[MSL12 1.30] /data/data055/operational/routine/bin/msl12_x64a par=/data/data097/lide.jiang/worktmp/MSL20220724/V2022205225940_NPP_NRTNIR.par
NOAA_MECB_BMW NRT_IDPS
SVM01_npp_d20220724_t2259404_e2301045_b55651_c20220724234605634084_oebc_ops.h5,S19461993_COADS_GEOS1.MET_noon,,,S19891991_TOMS.OZONE,,,radcor_modisa_nocor.hdf,polcor_viirsn_22bands_oc.hdf,landmask_USGS_15arc.nc,watermask.dat,digital_elevation_map.hdf,ice_mask.hdf,no2_climatology.hdf,alpha510_climatology.hdf,taua865_climatology.hdf,GMTCO_npp_d20220724_t2259404_e2301045_b55651_c20220724234442471615_oebc_ops.h5,
/home/pub/svc_cwatch/aps/aps/aps/share/coastwatch/bin/netcdf_cf_ingest V2022205225940_NPP_NRTNIR_L2.nc /home/pub/svc_cwatch/aps/aps_y/aps/work/VRSVCW.B2022205.225943.hdf
[cwutils 3.6.1.3 20201118_155352] cwregister2 -M South750UW4590Geographic.hdf VRSVCW.B2022205.225943.hdf VRSVCW.B2022205.225943.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwgraphics VRSVCW.B2022205.225943.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_y/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_225943_UW00_edgemask_masked.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask_nlw=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_y/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_225943_UW00_edgemask_masked.hdf
[MSL12 1.30] /data/data055/operational/routine/bin/msl12_x64a par=/data/data097/lide.jiang/worktmp/MSL20220724/V2022205230105_NPP_NRTNIR.par
NOAA_MECB_BMW NRT_IDPS
SVM01_npp_d20220724_t2301058_e2302299_b55651_c20220724234559425289_oebc_ops.h5,S19461993_COADS_GEOS1.MET_noon,,,S19891991_TOMS.OZONE,,,radcor_modisa_nocor.hdf,polcor_viirsn_22bands_oc.hdf,landmask_USGS_15arc.nc,watermask.dat,digital_elevation_map.hdf,ice_mask.hdf,no2_climatology.hdf,alpha510_climatology.hdf,taua865_climatology.hdf,GMTCO_npp_d20220724_t2301058_e2302299_b55651_c20220724234436723529_oebc_ops.h5,
/home/pub/svc_cwatch/aps/aps/aps/share/coastwatch/bin/netcdf_cf_ingest V2022205230105_NPP_NRTNIR_L2.nc /home/pub/svc_cwatch/aps/aps_w/aps/work/VRSVCW.B2022205.230108.hdf
[cwutils 3.6.1.3 20201118_155352] cwregister2 -M South750UW4590Geographic.hdf VRSVCW.B2022205.230108.hdf VRSVCW.B2022205.230108.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwgraphics VRSVCW.B2022205.230108.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_w/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_230108_UW00_edgemask_masked.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask_nlw=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_w/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_230108_UW00_edgemask_masked.hdf
[MSL12 1.30] /data/data055/operational/routine/bin/msl12_x64a par=/data/data097/lide.jiang/worktmp/MSL20220724/V2022205211841_NPP_NRTNIR.par
NOAA_MECB_BMW NRT_IDPS
SVM01_npp_d20220724_t2118419_e2120061_b55650_c20220724220444640478_oebc_ops.h5,S19461993_COADS_GEOS1.MET_noon,,,S19891991_TOMS.OZONE,,,radcor_modisa_nocor.hdf,polcor_viirsn_22bands_oc.hdf,landmask_USGS_15arc.nc,watermask.dat,digital_elevation_map.hdf,ice_mask.hdf,no2_climatology.hdf,alpha510_climatology.hdf,taua865_climatology.hdf,GMTCO_npp_d20220724_t2118419_e2120061_b55650_c20220724220319579862_oebc_ops.h5,
/home/pub/svc_cwatch/aps/aps/aps/share/coastwatch/bin/netcdf_cf_ingest V2022205211841_NPP_NRTNIR_L2.nc /home/pub/svc_cwatch/aps/aps_z/aps/work/VRSVCW.B2022205.211844.hdf
[cwutils 3.6.1.3 20201118_155352] cwregister2 -M South750UW4590Geographic.hdf VRSVCW.B2022205.211844.hdf VRSVCW.B2022205.211844.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwgraphics VRSVCW.B2022205.211844.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_z/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_211844_UW00_edgemask_masked.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask_nlw=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_z/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_211844_UW00_edgemask_masked.hdf
[MSL12 1.30] /data/data055/operational/routine/bin/msl12_x64a par=/data/data097/lide.jiang/worktmp/MSL20220724/V2022205010101_NPP_NRTNIR.par
NOAA_MECB_BMW NRT_IDPS
SVM01_npp_d20220724_t0101016_e0102258_b55638_c20220724015005779377_oebc_ops.h5,S19461993_COADS_GEOS1.MET_noon,,,S19891991_TOMS.OZONE,,,radcor_modisa_nocor.hdf,polcor_viirsn_22bands_oc.hdf,landmask_USGS_15arc.nc,watermask.dat,digital_elevation_map.hdf,ice_mask.hdf,no2_climatology.hdf,alpha510_climatology.hdf,taua865_climatology.hdf,GMTCO_npp_d20220724_t0101016_e0102258_b55638_c20220724014831715054_oebc_ops.h5,
/home/pub/svc_cwatch/aps/aps/aps/share/coastwatch/bin/netcdf_cf_ingest V2022205010101_NPP_NRTNIR_L2.nc /home/pub/svc_cwatch/aps/aps_v/aps/work/VRSVCW.B2022205.010104.hdf
[cwutils 3.6.1.3 20201118_155352] cwregister2 -M South750UW4590Geographic.hdf VRSVCW.B2022205.010104.hdf VRSVCW.B2022205.010104.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwgraphics VRSVCW.B2022205.010104.UW00.edgemask.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_v/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_010104_UW00_edgemask_masked.hdf
[cwutils 3.6.1.3 20201118_155352] cwmath --parser emulated --template graphics --expr commonmask_nlw=(and(l2_flags,4650)==0) /home/pub/svc_cwatch/aps/aps_v/browse/lvl3/seadas/coastwatch/hdf/VRSVCW_B2022205_010104_UW00_edgemask_masked.hdf
[cwutils 3.6.1.3 20201118_155352] cwcomposite --pedantic --method explicit --inputs - --match ^(longitude|latitude|chlor_a)$ /home/pub/svc_cwatch/aps/aps_v/browse/lvl4/modis/coastwatch/hdf/VRSVCW_B2022205_C5_010104_024204_211844_225943_230108_UW00_edgemask_chlora.hdf
[cwutils 3.6.1.3 20201118_155352] cwgraphics /home/pub/svc_cwatch/aps/aps_v/browse/lvl4/modis/coastwatch/hdf/VRSVCW_B2022205_C5_010104_024204_211844_225943_230108_UW00_edgemask_chlora.hdf
[cwutils 3.6.1.3 20201118_155352] cwimport --match=^graphics$ --copy /home/pub/svc_cwatch/aps/aps/aps/share/coastwatch/icons/GlobalFourKmGeographic.hdf /home/pub/svc_cwatch/aps/aps_v/browse/lvl4/modis/coastwatch/maskhdf/VRSVCW_B2022205_B2022205_F1_WW00_edgemask_chlora.hdf
2022-08-10T20:07:02Z https://www.star.nesdis.noaa.gov/thredds/dodsC/CoastWatch/VIIRS/npp/chlora/DailyGlobal/WW00
2022-08-10T20:07:02Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/nesdisVHNchlaDaily.das";
    String identifier_product_doi_authority "https://dx.doi.org";
    String infoUrl "https://www.star.nesdis.noaa.gov/thredds/dodsC/CoastWatch/VIIRS/npp/chlora/DailyGlobal/WW00.html";
    String institution "NOAA NESDIS STAR";
    String instrument "VIIRS";
    String keywords "algorithm, altitude, chemistry, chlor_a, chlorophyll, color, concentration, data, default, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Optics > Ocean Color, imager, imager/radiometer, imaging, infrared, L3, level, level-3, mass, mass_concentration_of_chlorophyll_a_in_sea_water, national, npp, ocean, ocean color, oceans, optics, orbiting, partnership, polar, polar-orbiting, radiometer, sea, seawater, star, suite, suite/suomi-npp, suomi, time, viirs, viirs-n, viirsn, visible, water, ww00";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"https://science.nasa.gov/earth-science/earth-science-data/data-information-policy/
The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String naming_authority "gov.noaa.pfeg.coastwatch";
    Float64 Northernmost_Northing 89.75625000000001;
    String OBSERVED_PROPERTY "chlor_a";
    String platform "S-NPP";
    String publisher_email "coastwatch.info@noaa.gov; ncei.info@noaa.gov";
    String publisher_name "NOAA CoastWatch; National Centers for Environmental Information (NCEI)";
    String publisher_url "https://coastwatch.noaa.gov; https://www.ncei.noaa.gov/";
    String source "S-NPP_VIIRS_chlora";
    String sourceUrl "https://www.star.nesdis.noaa.gov/thredds/dodsC/CoastWatch/VIIRS/npp/chlora/DailyGlobal/WW00";
    Float64 Southernmost_Northing -89.75625000000002;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Visible and Infrared Imager/Radiometer Suite/Suomi-NPP (VIIRSN) Level-3 (WW00), Near Real-Time, Chlorophyll, Global, Daily, processed by NOAA. EXPERIMENTAL.";
    String testOutOfDate "now-3days";
    String time_coverage_end "2022-07-25T12:00:00Z";
    String time_coverage_start "2021-07-20T12:00:00Z";
    String title "Chlorophyll, NOAA VIIRS-SNPP, Near Real-Time, Global, Level 3, 2020-present, EXPERIMENTAL, Daily";
    Float64 Westernmost_Easting -180.01875;
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its projection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.


 
ERDDAP, Version 2.18
Disclaimers | Privacy Policy | Contact