Variables
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Scan_Start_Time
[Cell_Along_Swath_5km=0..405]
[Cell_Across_Swath_5km=0..269]
(Type is Float64)
-
attributes
-
coordinates
Latitude Longitude
-
valid_range
0.0000000000000000
3155800064.0000000
-
_FillValue
-999.90002441406250
-
long_name
TAI time at start of scan replicated across the swath
-
units
seconds since 1993-1-1 00:00:00.0 0
-
scale_factor
1.0000000000000000
-
add_offset
0.0000000000000000
-
Parameter_Type
MODIS Input
-
Cell_Along_Swath_Sampling
3
2028
5
-
Cell_Across_Swath_Sampling
3
1348
5
-
Geolocation_Pointer
Internal geolocation arrays
Solar_Zenith
[Cell_Along_Swath_5km=0..405]
[Cell_Across_Swath_5km=0..269]
(Type is Int16)
-
attributes
-
coordinates
Latitude Longitude
-
-
-
long_name
Solar Zenith Angle, Cell to Sun
-
-
scale_factor
0.0099999997764825821
-
add_offset
0.0000000000000000
-
Parameter_Type
MODIS Input
-
Cell_Along_Swath_Sampling
3
2028
5
-
Cell_Across_Swath_Sampling
3
1348
5
-
Geolocation_Pointer
Internal geolocation arrays
Solar_Azimuth
[Cell_Along_Swath_5km=0..405]
[Cell_Across_Swath_5km=0..269]
(Type is Int16)
-
attributes
-
coordinates
Latitude Longitude
-
-
-
long_name
Solar Azimuth Angle, Cell to Sun
-
-
scale_factor
0.0099999997764825821
-
add_offset
0.0000000000000000
-
Parameter_Type
MODIS Input
-
Cell_Along_Swath_Sampling
3
2028
5
-
Cell_Across_Swath_Sampling
3
1348
5
-
Geolocation_Pointer
Internal geolocation arrays
Sensor_Zenith
[Cell_Along_Swath_5km=0..405]
[Cell_Across_Swath_5km=0..269]
(Type is Int16)
-
attributes
-
coordinates
Latitude Longitude
-
-
-
long_name
Sensor Zenith Angle, Cell to Sensor
-
-
scale_factor
0.0099999997764825821
-
add_offset
0.0000000000000000
-
Parameter_Type
MODIS Input
-
Cell_Along_Swath_Sampling
3
2028
5
-
Cell_Across_Swath_Sampling
3
1348
5
-
Geolocation_Pointer
Internal geolocation arrays
Sensor_Azimuth
[Cell_Along_Swath_5km=0..405]
[Cell_Across_Swath_5km=0..269]
(Type is Int16)
-
attributes
-
coordinates
Latitude Longitude
-
-
-
long_name
Sensor Azimuth Angle, Cell to Sensor
-
-
scale_factor
0.0099999997764825821
-
add_offset
0.0000000000000000
-
Parameter_Type
MODIS Input
-
Cell_Along_Swath_Sampling
3
2028
5
-
Cell_Across_Swath_Sampling
3
1348
5
-
Geolocation_Pointer
Internal geolocation arrays
Cloud_Mask_SPI
[Cell_Along_Swath_1km=0..2029]
[Cell_Across_Swath_1km=0..1353]
[SPI_nband=0..1]
(Type is Int16)
-
attributes
-
coordinates
Latitude_1 Longitude_1 SPI_nband
-
-
-
long_name
Dispersion in bands 1 (plane 1) and 2 (plane 2) from 250m reflectance statistics of cloud mask
-
-
scale_factor
0.0099999997764825821
-
add_offset
0.0000000000000000
-
-
Cell_Along_Swath_Sampling
1
2030
1
-
Cell_Across_Swath_Sampling
1
1354
1
-
Geolocation_Pointer
External MODIS geolocation product
Cloud_Mask
[Byte_Segment=0..5]
[Cell_Along_Swath_1km=0..2029]
[Cell_Across_Swath_1km=0..1353]
(Type is Int32)
-
attributes
-
coordinates
Byte_Segment Latitude_1 Longitude_1
-
-
-
long_name
MODIS Cloud Mask and Spectral Test Results
-
-
scale_factor
1.0000000000000000
-
add_offset
0.0000000000000000
-
-
Cell_Along_Swath_Sampling
1
2030
1
-
Cell_Across_Swath_Sampling
1
1354
1
-
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
____ END BYTE 1 ______________ ___________________________________________
bit field Description Key
--------- ----------- ---
1-KM FLAGS
----------------------
0 Non- cloud obstruction Flag 0 = Yes / 1 = No
1 Thin Cirrus Detected (Solar) 0 = Yes / 1 = No
2 Snow cover from ancillary map 0 = Yes / 1 = No
3 Thin Cirrus Detected (Infrared) 0 = Yes / 1 = No
4 Cloud Adjacency (cloudy, probably 0 = Yes / 1 = No
cloudy plus 1-pixel adjacent)
5 Cloud Flag - IR Threshold 0 = Yes / 1 = No
6 High Cloud Flag - CO2 Test 0 = Yes / 1 = No
7 High Cloud Flag - 6.7 micron Test 0 = Yes / 1 = No
____ END BYTE 2 ______________ ___________________________________________
bit field Description Key
--------- ----------- ---
0 High Cloud Flag - 1.38 micron Test 0 = Yes / 1 = No
1 High Cloud Flag - 3.9- 12 micron Test 0 = Yes / 1 = No
2 Cloud Flag - IR Temperature 0 = Yes / 1 = No
Difference
3 Cloud Flag - 3.9- 11 micron Test 0 = Yes / 1 = No
4 Cloud Flag - Visible Reflectance Test 0 = Yes / 1 = No
5 Cloud Flag - Visible/NIR Reflectance 0 = Yes / 1 = No
Ratio Test
6 Cloud Flag - NDVI Clear Sky Restoral 0 = Yes / 1 = No
Test
7 Cloud Flag - Night Land and Polar 0 = Yes / 1 = No
7.3-11 micron Test
____ END BYTE 3 ______________ ___________________________________________
bit field Description Key
--------- ----------- ---
0 Cloud Flag - Ocean 8.6- 11 micron Test 0 = Yes / 1 = No
1 Cloud Flag - Clear Sky Restoral Test 0 = Yes / 1 = No
Spatial Consistency
2 Cloud Flag - Clear Sky Restoral Test 0 = Yes / 1 = No
Polar Night, Land, Sun-glint
3 Cloud Flag - Surface Temperature Test 0 = Yes / 1 = No
4 Suspended Dust Flag 0 = Yes / 1 = No
5 Cloud Flag - Night Ocean 8.6- 7.3 micron 0 = Yes / 1 = No
Test
6 Cloud Flag - Night Ocean 11 micon 0 = Yes / 1 = No
Spatial Variability Test
7 Cloud Flag - Night Ocean Low Emissivity 0 = Yes / 1 = No
Low Cloud 3.9-11 micron Test
____ END BYTE 4 ______________ ___________________________________________
bit field Description Key
--------- ----------- ---
250-m Cloud Flag - Visible Tests
--------------------------------
0 Element(1,1) 0 = Yes / 1 = No
1 Element(1,2) 0 = Yes / 1 = No
2 Element(1,3) 0 = Yes / 1 = No
3 Element(1,4) 0 = Yes / 1 = No
4 Element(2,1) 0 = Yes / 1 = No
5 Element(2,2) 0 = Yes / 1 = No
6 Element(2,3) 0 = Yes / 1 = No
7 Element(2,4) 0 = Yes / 1 = No
____ END BYTE 5 ______________ ___________________________________________
bit field Description Key
---------- ----------- ---
0 Element(3,1) 0 = Yes / 1 = No
1 Element(3,2) 0 = Yes / 1 = No
2 Element(3,3) 0 = Yes / 1 = No
3 Element(3,4) 0 = Yes / 1 = No
4 Element(4,1) 0 = Yes / 1 = No
5 Element(4,2) 0 = Yes / 1 = No
6 Element(4,3) 0 = Yes / 1 = No
7 Element(4,4) 0 = Yes / 1 = No
____ END BYTE 6 ______________ ___________________________________________
Quality_Assurance
[Cell_Along_Swath_1km=0..2029]
[Cell_Across_Swath_1km=0..1353]
[QA_Dimension=0..9]
(Type is Int32)
-
attributes
-
coordinates
Latitude_1 Longitude_1 QA_Dimension
-
-
-
long_name
Quality Assurance for Cloud Mask
-
-
scale_factor
1.0000000000000000
-
add_offset
0.0000000000000000
-
-
Cell_Along_Swath_Sampling
1
2030
1
-
Cell_Across_Swath_Sampling
1
1354
1
-
Geolocation_Pointer
External MODIS geolocation product
-
description
\\n
Product Run Time QA Flags
QA Flag Name Number of Bits Bit Value Description
-------------------------------------------------------------
Cloud Mask QA 1 0 not useful
(1km) 1 useful
Cloud Mask 3 0-7 8 confidence levels
Confidence QA
(1km)
Spares 4
-------- ( 1 byte total ) --------------------------------
Optional run time QA flags - Individual test application
QA Flag Name Number of Bits Bit Value Description
-------------------------------------------------------------
NCO test 1 0 Not Applied
1 Applied
Thin Cirrus 1 0 Not Applied
test (Solar) 1 Applied
Ancillary Snow Map 1 NA NA
Thin Cirrus 1 0 Not Applied
test(IR) 1 Applied
Cloud Adjancency 1 0 Not Applied
test(IR) 1 Applied
IR Threshold 1 0 Not Applied
test 1 Applied
High Cloud 1 0 Not Applied
Test (CO2) 1 Applied
High Cloud 1 0 Not Applied
Test (6.7) 1 Applied
High Cloud 1 0 Not Applied
Test (1.38) 1 Applied
High Cloud 1 0 Not Applied
Test (3.9-12um) 1 Applied
IR Temperature 1 0 Not Applied
Difference Tests 1 Applied
3.9-11um Test 1 0 Not Applied
1 Applied
.68 Reflectance 1 0 Not Applied
Test 1 Applied
Visible Ratio 1 0 Not Applied
Test 1 Applied
NDVI Clear Sky 1 0 Not Applied
Restoral Test 1 Applied
7.3-11 um Test 1 0 Not Applied
1 Applied
8.6-11 um Test 1 0 Not Applied
1 Applied
Spatial Variability 1 0 Not Applied
Clear Sky Restoral 1 Applied
Test
Clear Sky Restoral 1 0 Not Applied
Tests 1 Applied
Night Water 1 0 Not Applied
Spatial Variability 1 Applied
Suspended Dust Test 1 0 Not Applied
1 Applied
Night Water 1 0 Not Applied
8.6-7.3 um Test 1 Applied
Night Water 11 um 1 0 Not Applied
Variability Test 1 Applied
Night Water Low 1 0 Not Applied
Emissivity Low 1 Applied
Cloud Test
250 m Visible 1(16) 0 Not Applied
Tests 1 Applied
(16 times as (line1,element1),(line1, element2),...
(line4,element4))
-------- ( 5 bytes total ) --------------------------------
Optional run time QA flags - data information flags
QA Flag Name Number of Bits Bit Value Description
-------------------------------------------------------------
Number of 2 0 None
bands used to 1 1-7
generate 2 8-14
cloud mask 3 15-21
Number of 2 0 None
spectral 1 1-3
tests used to 2 4-6
generate 3 7-9
cloud mask
Spares 4
-------- ( 1 byte total ) --------------------------------
Optional run time QA flags - data resource flags
QA Flag Name Number of Bits Bit Value Description
-------------------------------------------------------------
Clear 2 0 MOD35
Radiance 1 Model forward calculation
Origin 2 Other
3 Not used
Surface 2 0 NCEP GDAS
Temperature 1 DAO
Over Land 2 MOD11
3 Other
Surface 2 0 Reynolds blended
Temperature 1 DAO
Over Ocean 2 MOD28
3 Other
Surface Winds 2 0 NCEP GDAS
1 DAO
2 Other
3 Not used
Ecosystem Map 2 0 Loveland NA 1km
1 Olson Ecosystem
2 MOD12
3 Other
Snow mask 2 0 MOD33
1 SSMI Product
2 Other
3 Not used
Ice cover 2 0 MOD42
1 SSMI product
2 Other
3 Not used
Land/Sea Mask 2 0 USGS 1 km 6 level
1 USGS 1 km binary
2 Other
3 Not used
Digital 1 0 EOS DEM
Elevation 1 Not used
Model
Precipitable 2 0 NCEP GDAS
Water 1 DAO
2 MOD07
3 Other
Spare 5
-------- ( 3 bytes total ) --------------------------------
Latitude
[Cell_Along_Swath_5km=0..405]
[Cell_Across_Swath_5km=0..269]
(Type is Float32)
-
attributes
-
-
valid_range
-90.00000000
90.00000000
-
-
long_name
Geodetic Latitude
-
Parameter_Type
MODIS Input
-
Cell_Along_Swath_Sampling
3
2028
5
-
Cell_Across_Swath_Sampling
3
1348
5
-
Geolocation_Pointer
Internal geolocation arrays
Longitude
[Cell_Along_Swath_5km=0..405]
[Cell_Across_Swath_5km=0..269]
(Type is Float32)
-
attributes
-
-
valid_range
-180.0000000
180.0000000
-
-
long_name
Geodetic Longitude
-
Parameter_Type
MODIS Input
-
Cell_Along_Swath_Sampling
3
2028
5
-
Cell_Across_Swath_Sampling
3
1348
5
-
Geolocation_Pointer
Internal geolocation arrays
Latitude_1
[Cell_Along_Swath_1km=0..2029]
[Cell_Across_Swath_1km=0..1353]
(Type is Float32)
Longitude_1
[Cell_Along_Swath_1km=0..2029]
[Cell_Across_Swath_1km=0..1353]
(Type is Float32)
-
attributes
-
-
long_name
QA_Dimension(fake)
-
attributes
-
-
long_name
SPI_nband(fake)
|