NOAA CoastWatch Program - NOAA National Environmental Satellite Data and Information Service
20050808
000000Z
NOAA POES AVHRR CLAVR-1 Night-time Cloudmask
One
map (GIF, PDF), raster digital data (HDF, MAT, NetCDF), tabular digital data (ASCII), vector digital data (XYZ)
Pacific Grove, CA
NOAA CoastWatch Program, West Coast Regional Node
https://coastwatch.pfel.noaa.gov
The CLAVR-1 cloudmask (Stowe, 1999) is used to cloudmask AVHRR high resolution sea surface temperature products. The cloudmask runs a series of tests on each surface temperature pixel to determine whether the pixel is contaminated by cloud cover. Users may evaluate which specific tests in the cloudmask returned positive cloud presence results by examining the value of the cloudmask. This value corresponds to an 8 bit binary number which details which tests flagged the pixel as a cloudy pixel.
Products are intended for federal, state, and local government environmental decision makers. Other uses include recreational boating, educators, resource managers, and researchers. Products are validated with in situ measurements to quantify their accuracy.
For further information on the data set, including a description of processing steps, calibration and validation methods, and references, see the Pre-Dissemination Review. These documents will be available on the website in the future. Users should note that data marked as clouds could be either clouds or missing data.
-60 days from present
000000Z
ongoing
000000Z
none
None planned
-145.0
-105.0
51.0
22.0
noneNOAA CoastWatchPOESAVHRRCLAVRCloudmaskCloudssea surface temperature
none
pass
none
Not intended for legal use. Data may contain inaccuracies.
NOAA CoastWatch, West Coast Regional Node
Dave Foley
NOAA CoastWatch Coordinator, West Coast Regional Node
mailing and physical
NOAA SWFSC Environmental Research Division (ERD), 1352 Lighthouse Ave.
Pacific Grove
California
93950
United States of America
831-648-0632
831-648-8440
dave.foley@noaa.gov
Monday through Friday, 8am to 5pm PST
NOAA National Weather Service (NWS), National Environmental Satellite, Data, and Information Service (NESDIS), National Data Buoy Center (NDBC)
Native data format is NetCDF and HDF.
unknown
none
none
Horizontal accuracy is within 1.47 km.
none
NOAA, National Environmental Satellite, Data, and Information Service (NESDIS), Office of Satellite Data Processing & Distribution (OSDPD), National Weather Service (NWS), Monterey, CA.
20050808
NOAA POES AVHRR CLAVR-1 Cloudmask
One
raster digital data
https://www.osdpd.noaa.gov/PSB/EPS/CW/coastwatch.html
Digital
-60days from present
000000Z
ongoing
000000Z
Upon processing.
NOAA CoastWatch
NOAA CoastWatch Program provides access to ocean remote sensing and in situ data products.
Level 2 and level 3 geophysical properties are mapped and binned in arithmetic means.
ongoing
Raster
Pixel
2241
2401
0.0125
0.0125
Decimal degrees
Sphere
Sphere
6370997 meters
1
Attributes determined from data filename.
none
NOAA CoastWatch, West Coast Regional Node
Dave Foley
NOAA CoastWatch coordinator, West Coast Regional Node
mailing and physical
NOAA SWFSC Environmental Research Division (ERD), 1352 Lighthouse Ave.
Pacific Grove
California
93950
United States of America
831-648-0632
831-648-8440
dave.foley@noaa.gov
Monday through Friday, 8am to 5pm PST
NOAA POES AVHRR CLAVR-1 Cloudmask
Neither CoastWatch, 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 any information at this site.
Files are available in ASCII, NetCDF, HDF, MATLAB, GIF, or PDF formats.
Compressed files are compressed using ZIP method.
All data is accessible through the CoastWatch, West Coast Regional Node website: https://coastwatch.pfel.noaa.gov. Primary access to the data is through the CoastWatch Browser. The CoastWatch Browser is a web page for selecting, viewing, and downloading near-real-time satellite data and other data for the west coast of the U.S. and Mexico. It creates custom maps on-the-fly of the data that you select. The maps can include bathymetry contour lines, contour lines from other data sets, and vectors from other data sets. The data can be downloaded in several different data file formats.
none
none
The ASCII format is recognized by most GIS software and common commercial spreadsheets. The GIF format is recognized by most graphics applications. The PDF format is a file format designed for electronic document display, and can be viewed using PDF viewing software. The HDF format is recognized by image analysis programs including CDAT, a freely distributed viewing program provided by NOAA CoastWatch. The MATLAB format is recognized by MathWorks MATLAB computing software.
none
20060407
NOAA CoastWatch, West Coast Regional Node
Dave Foley
NOAA CoastWatch Coordinator, West Coast Regional Node
mailing and physical
NOAA SWFSC Environmental Research Division (ERD), 1352 Lighthouse Ave.
Pacific Grove
California
93950
United States of America
831-648-0632
831-648-8440
dave.foley@noaa.gov
Monday through Friday, 8am to 5pm PST
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
universal time