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ERDDAP at RI Data Discovery Center
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| Dataset Title: | Landsat Satellite Surface Temperature version 2, Narragansett Bay
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| Institution: | United States Geological Survey (Dataset ID: landsat_sst_narrbay_v2_data) |
| Information: | Summary
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Attributes {
time {
String _CoordinateAxisType "Time";
Float64 actual_range 4.52304e+8, 1.6644096e+9;
String axis "T";
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";
}
Y {
Int16 actual_range 0, 1129;
String long_name "Y";
String source_name "y";
String units "count";
}
X {
Int16 actual_range 0, 799;
String long_name "X";
String source_name "x";
String units "count";
}
satellite {
Float64 colorBarMaximum 8.0;
Float64 colorBarMinimum 5.0;
String long_name "Landsat Satellite Number";
String note "This value is for the entire satellite image, so all values at a given timestep will be the same";
String units "Landsat 5, Landsat 7, or Landsat 8";
}
clouds {
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String long_name "cloud cover over Narragansett Bay";
String note "This value is for the entire satellite image, so all values at a given timestep will be the same";
String standard_name "cloud_area_fraction";
String units "percent clouds";
}
temperature {
Float64 colorBarMaximum 25.0;
Float64 colorBarMinimum 0.0;
String comment "Accuracy of Satellite = within 0.1 degrees C for Landsat 8, 0.6 degrees C for Landsat 7, and 0.5 degrees C for Landsat 5. Uncertainty measurment of 1.9 degrees C derived from Landsat 5 comaprison with RI DEM buoys (2003-2022).";
String long_name "Surface Temperature";
Float64 Measurement_Uncertainty_derived_from_surface_buoy_comparison_degC 1.9;
String standard_name "surface_temperature";
String units "degree_C";
}
temperature_detrend {
Float64 colorBarMaximum 5.0;
Float64 colorBarMinimum -5.0;
String comment "Accuracy of Satellite = within 0.1 degrees C for Landsat 8, 0.6 degrees C for Landsat 7, and 0.5 degrees C for Landsat 5. Uncertainty measurment of 1.9 degrees C derived from Landsat 5 comaprison with RI DEM buoys (2003-2022).";
String long_name "Surface Temperature - deseasonalized and detrended";
Float64 Measurement_Uncertainty_derived_from_surface_buoy_comparison_degC 1.9;
String units "degree_C";
}
NC_GLOBAL {
String cdm_data_type "Grid";
String comment "Attribute Accuracy Report: Satellite-derived orthorectified brightness temperature was measured within 0.1 degrees C for Landsat 8, 0.6 degrees C for Landsat 7, and 0.5 degrees C for Landsat 5. Satellite measurements were compared to in situ (buoy) surface temperatures from 2003 to 2022, and the mean bias between the RI DEM buoy temperatures and the satellite temperatures at the pixel of the buoys was added to or subtrcted from all scenes by satellite. The standard deviation between the buoys and the satellite after adding the bias is 1.9 degrees C for Landsat 5, 1.9 degrees C for Landsat 7 and 1.3 degrees C for Landsat 8. The standard deviation is considered the uncertainty of the satellite measurements. See https://www.usgs.gov/land-resources/nli/landsat/landsat-surface-reflectance?qt-science_support_page_related_con=0#qt-science_support_page_related_con for more information.";
String Conventions "COARDS, CF-1.10, ACDD-1.3";
String creator_name "Rhode Island Data Discovery/United States Geological Survey";
String defaultGraphQuery "temperature[0:last][0:last][last]&.draw=surface&.vars=X|Y|temperature";
String description "Landsat-derived water surface temperature in Narragansett Bay with bias correction from RI DEM buoys.";
String history
"Converted from Landsat 5, 7, and 8 Surface Reflectance geotiff products to netCDF. The units were changed from K to degrees C and the average bias determined through RI DEM buoy comparison in Mount Hope Bay (2003-2022) to each satellite was added to or subtracted from all scenes from the corresponding satellite. For Landsat 5, 0.45 degrees C was subtracted from all scenes; similarly, 1.094 was subtracted for Landsat 7, and 0.178 was added for Landsat 8. The errors were determined by averaging the five closest temporal buoy readings for each satellite image capture and spatially averaging buoy locations within a 200-square-meter zone. The scenes were also cloud masked, land masked, and stripes in Landsat 7 imagery (due to sensor failure) were masked as well. A buoy comparison was only conducted within Narragansett Bay for Landsat scenes with less than 50% cloud cover, and applied to available scenes back to 1984 for Landsat 5, 1999 for Landsat 7, and 2013 for Landsat 8. As a result, data uncertainties are unknown outside of the Narragansett Bay region, for scenes with greater cloud cover, and scenes before 2003.
2025-04-28T12:33:30Z (local files)
2025-04-28T12:33:30Z https://pricaimcit.services.brown.edu/erddap/griddap/landsat_sst_narrbay_v2_data.das";
String infoUrl "https://earthexplorer.usgs.gov/ accessed through https://code.earthengine.google.com/";
String institution "United States Geological Survey";
String keywords "amount, area, atmosphere, bay, cloud, cloud cover, cloud_area_fraction, cloudiness, clouds, cover, data, deseasonalized, detrended, discovery, earth, Earth Science > Atmosphere > Clouds > Cloud Amount/Frequency, Earth Science > Land Surface > Land Temperature > Land Surface Temperature, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, fraction, frequency, geological, hope, island, land, landsat, mount, number, ocean, oceans, over, rhode, satellite, science, sea, states, surface, surface_temperature, survey, temerapture, temperature, Temperature_detrend, time, united, version";
String keywords_vocabulary "GCMD Science Keywords";
String license
"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 publication "https://doi.org/10.26300/ja0b-xa86";
String publisher_name "Rhode Island Data Discovery";
String publisher_url "https://riddc.brown.edu/";
String references "Rhode Island Data Discovery/United States Geological Survey";
String source "https://earthexplorer.usgs.gov/ accessed through https://code.earthengine.google.com/";
String sourceUrl "(local files)";
String standard_name_vocabulary "CF Standard Name Table v55";
String summary "Landsat-derived water surface temperature in Mount Hope Bay with bias correction from RI DEM buoys. For translation from the x,y coordinates to latitude and longitude see the \"Landsat Satellite Coordinates version 2, Narragansett Bay\" dataset.";
String time_coverage_end "2022-09-29T00:00:00Z";
String time_coverage_start "1984-05-02T00:00:00Z";
String title "Landsat Satellite Surface Temperature version 2, Narragansett Bay";
}
}
Data Access Protocol (DAP) and its
projection constraints.
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.