w10n Service: meta for leaf/opendap/w10n/allData/61/MYDATML2/2004/238/MYDATML2.A2004238.1350.061.2018016043032.hdf/Cloud_Mask
OPeNDAP Logo w10n Service

meta for leaf/opendap/w10n/allData/61/MYDATML2/2004/238/MYDATML2.A2004238.1350.061.2018016043032.hdf/Cloud_Mask

Parent Node META: json html DATA: json dap2 nc3 nc4 dap4 wee-e big-e

Cloud_Mask[Byte_Segment=0..0] [Cell_Along_Swath_5km=0..405] [Cell_Across_Swath_5km=0..270] (Type is Int32)
  • attributes
    • coordinates
      Byte_Segment Latitude Longitude
    • long_name
      MODIS Cloud Mask
    • units
      none
    • valid_range
      0
      -1
    • _FillValue
      0
    • Parameter_Type
      Output
    • Cell_Along_Swath_Sampling
      4
      2029
      5
    • Cell_Across_Swath_Sampling
      3
      1348
      5
    • Geolocation_Pointer
      External MODIS geolocation product
    • description
      \n Bit fields within each byte are numbered from the left: 7, 6, 5, 4, 3, 2, 1, 0. The left-most bit (bit 7) is the most significant bit. The right-most bit (bit 0) is the least significant bit. bit field Description Key --------- ----------- --- 0 Cloud Mask Flag 0 = Not determined 1 = Determined 2, 1 Unobstructed FOV Quality Flag 00 = Cloudy 01 = Uncertain 10 = Probably Clear 11 = Confident Clear PROCESSING PATH --------------- 3 Day or Night Path 0 = Night / 1 = Day 4 Sunglint Path 0 = Yes / 1 = No 5 Snow/Ice Background Path 0 = Yes / 1 = No 7, 6 Land or Water Path 00 = Water 01 = Coastal 10 = Desert 11 = Land
    • _1_km_to_5_km_subsampling_description
      Each value in this dataset does not represent an average of properties over a 5 x 5 km grid box, but rather a single sample from within each 5 km box. Normally, pixels in across-track rows 4 and 9 (counting in the direction of increasing scan number) out of every set of 10 rows are used for subsampling the 1 km retrievals to a 5 km resolution. If the array contents are determined to be all fill values after selecting the default pixel subset (e.g., from failed detectors), a different pair of pixel rows is used to perform the subsampling. Note that 5 km data sets are centered on rows 3 and 8; the default sampling choice of 4 and 9 is for better data quality and avoidance of dead detectors on Aqua. The row pair used for the 1 km sample is always given by the first number and last digit of the second number of the attribute Cell_Along_Swath_Sampling. The attribute Cell_Across_Swath_Sampling indicates that columns 3 and 8 are used, as they always are, for across-track sampling. Again these values are to be interpreted counting in the direction of the scan, from 1 through 10 inclusively. For example, if the value of attribute Cell_Along_Swath_Sampling is 3, 2028, 5, then the third and eighth pixel rows were used for subsampling. A value of 4, 2029, 5 indicates that the default fourth and ninth rows pair was used.
    • source_info
      MYD35_L2.A2004238.1350.061.2018015233858.hdf pge03v6.1.1 Cloud_Mask
    • scale_factor
      1.0000000000000000
    • add_offset
      0.0000000000000000

Hyrax development sponsored by NSF , NASA , and NOAA

OPeNDAP Hyrax (1.16.5)
Documentation