- Dataset Availability
- 2012-01-19T00:00:00Z–2025-01-02T00:00:00Z
- Dataset Provider
- NASA LAADS DAAC
- Cadence
- 1 Day
- Tags
Description
The Suomi National Polar-orbiting Partnership (SNPP) Visible Infrared Imaging Radiometer Suite (VIIRS) supports a Day-Night Band (DNB) sensor that provides global daily measurements of nocturnal visible and near-infrared (NIR) light that are suitable for Earth system science and applications. The VIIRS DNB's ultra-sensitivity in lowlight conditions enables us to generate a new set of science-quality nighttime products that manifest substantial improvements in sensor resolution and calibration when compared to the previous era of Defense Meteorological Satellite Program/Operational Linescan System's (DMSP/OLS) nighttime lights image products.
VNP46A1 is a daily, top-of-atmosphere, at-sensor nighttime radiance product called VIIRS/NPP Daily Gridded Day Night Band 15 arc-second Linear Lat Lon Grid Night. The product contains 26 Science Data Sets (SDS) that include sensor radiance, zenith and azimuth angles (at-sensor, solar, and lunar), cloud-mask flags, time, shortwave IR radiance, brightness temperatures, VIIRS quality flags, moon phase angle, and moon illumination fraction. It also provides Quality Flag (QF) information specific to the cloud-mask, VIIRS moderate-resolution bands M10, M11, M12, M13, M15, M16, and DNB.
Documentation:
Bands
Pixel Size 500 meters
Bands
BrightnessTemperature_M12
Brightness temperature of band M12
BrightnessTemperature_M13
Brightness temperature of band M13
BrightnessTemperature_M15
Brightness temperature of band M15
BrightnessTemperature_M16
Brightness temperature of band M16
DNB_At_Sensor_Radiance_500m
At-sensor DNB radiance
Glint_Angle
Moon glint angle
Granule
Number of selected Granule
Lunar_Zenith
Lunar zenith angle
Lunar_Azimuth
Lunar azimuth angle
Moon_Illumination_Fraction
Moon illumination fraction
Moon_Phase_Angle
Moon phase angle
QF_Cloud_Mask
Quality flag for cloud mask
QF_DNB
DNB quality flag
QF_VIIRS_M10
Quality flag of band M10
QF_VIIRS_M11
Quality flag of band M11
QF_VIIRS_M12
Quality flag of band M12
QF_VIIRS_M13
Quality flag of band M13
QF_VIIRS_M15
Quality flag of band M15
QF_VIIRS_M16
Quality flag of band M16
Radiance_M10
Radiance in band M10
Radiance_M11
Radiance in band M11
Sensor_Azimuth
Sensor azimuth angle
Sensor_Zenith
Sensor zenith angle
Solar_Azimuth
Solar azimuth angle
Solar_Zenith
Solar zenith angle
UTC_Time
UTC time
QF_DNB Class Table
| Value | Color | Description |
|---|---|---|
|
1
|
None | Substitute_Cal |
|
2
|
None | Out_of_Range |
|
4
|
None | Saturation |
|
8
|
None | Temp_not_Nominal |
|
16
|
None | Stray_light |
|
256
|
None | Bowtie_Deleted |
|
512
|
None | Missing_EV |
|
1024
|
None | Cal_Fail |
|
2048
|
None | Dead_Detector |
QF_VIIRS_M10 Class Table
| Value | Color | Description |
|---|---|---|
|
1
|
None | Substitute_Cal |
|
2
|
None | Out_of_Range |
|
4
|
None | Saturation |
|
8
|
None | Temp_not_Nominal |
|
256
|
None | Bowtie_Deleted |
|
512
|
None | Missing_EV |
|
1024
|
None | Cal_Fail |
|
2048
|
None | Dead_Detector |
QF_VIIRS_M11 Class Table
| Value | Color | Description |
|---|---|---|
|
1
|
None | Substitute_Cal |
|
2
|
None | Out_of_Range |
|
4
|
None | Saturation |
|
8
|
None | Temp_not_Nominal |
|
256
|
None | Bowtie_Deleted |
|
512
|
None | Missing_EV |
|
1024
|
None | Cal_Fail |
|
2048
|
None | Dead_Detector |
QF_VIIRS_M12 Class Table
| Value | Color | Description |
|---|---|---|
|
1
|
None | Substitute_Cal |
|
2
|
None | Out_of_Range |
|
4
|
None | Saturation |
|
8
|
None | Temp_not_Nominal |
|
256
|
None | Bowtie_Deleted |
|
512
|
None | Missing_EV |
|
1024
|
None | Cal_Fail |
|
2048
|
None | Dead_Detector |
QF_VIIRS_M13 Class Table
| Value | Color | Description |
|---|---|---|
|
1
|
None | Substitute_Cal |
|
2
|
None | Out_of_Range |
|
4
|
None | Saturation |
|
8
|
None | Temp_not_Nominal |
|
256
|
None | Bowtie_Deleted |
|
512
|
None | Missing_EV |
|
1024
|
None | Cal_Fail |
|
2048
|
None | Dead_Detector |
QF_VIIRS_M15 Class Table
| Value | Color | Description |
|---|---|---|
|
1
|
None | Substitute_Cal |
|
2
|
None | Out_of_Range |
|
4
|
None | Saturation |
|
8
|
None | Temp_not_Nominal |
|
256
|
None | Bowtie_Deleted |
|
512
|
None | Missing_EV |
|
1024
|
None | Cal_Fail |
|
2048
|
None | Dead_Detector |
QF_VIIRS_M16 Class Table
| Value | Color | Description |
|---|---|---|
|
1
|
None | Substitute_Cal |
|
2
|
None | Out_of_Range |
|
4
|
None | Saturation |
|
8
|
None | Temp_not_Nominal |
|
256
|
None | Bowtie_Deleted |
|
512
|
None | Missing_EV |
|
1024
|
None | Cal_Fail |
|
2048
|
None | Dead_Detector |
Terms of Use
Terms of Use
LP DAAC NASA data are freely accessible; however, when an author publishes these data or works based on the data, it is requested that the author cite the datasets within the text of the publication and include a reference to them in the reference list.
Citations
-
Please visit LP DAAC 'Citing Our Data' page
DOIs
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee . ImageCollection ( 'NOAA/VIIRS/001/VNP46A1' ). filter ( ee . Filter . date ( '2013-01-01' , '2013-07-01' )); // At-sensor Day/night Band radiance (DNB). var dnb = dataset . select ( 'DNB_At_Sensor_Radiance_500m' ); var dnbVis = { min : 0 , max : 50 , palette : [ 'black' , 'purple' , 'cyan' , 'green' , 'yellow' , 'red' , 'white' ], }; Map . setCenter ( - 79.4 , 43.1 , 8 ); Map . addLayer ( dnb , dnbVis , 'Day-Night Band (DNB) at sensor radiance 500m' );
