VNP09GA: VIIRS Surface Reflectance Daily 500m and 1km

Dataset Availability: 2012-01-19T00:00:00Z–2024-06-20T00:00:00Z
Dataset Provider: NASA Land SIPS
Earth Engine Snippet: ee.ImageCollection("NASA/VIIRS/002/VNP09GA")
Tags: daily nasa noaa npp reflectance sr viirs
vnp09ga

Description

The Visible Infrared Imaging Radiometer Suite (VIIRS) daily surface reflectance (VNP09GA) product provides an estimate of land surface reflectance from the Suomi National Polar-Orbiting Partnership (S-NPP) VIIRS sensor. Data are provided for three imagery bands (I1, I2, I3) at nominal 500 meter resolution (~463 meter) and nine moderate-resolution bands (M1, M2, M3, M4, M5, M7, M8, M10, M11) at nominal 1 kilometer (~926 meter) resolution. The 500 meter and 1 kilometer datasets are derived through resampling the native 375 meter and 750 meter VIIRS resolutions, respectively, in the L2 input product. These bands are corrected for atmospheric conditions to provide an estimate of the surface spectral reflectance as it would be measured at ground level.

The data is temporally aggregated over each of the 16 possible passes per day. When multiple observations are present for each day, only the first of the highest-quality observations is included.

The band scale factors are already applied.

For additional information, visit the VIIRS Land Product Quality Assessment website

Documentation:

Bands

Bands

Name	Units	Min	Max	Pixel Size	Wavelength	Description
`M1`		-0.01	1.6	1000 meters	0.402 - 0.422µm	1km surface reflectance band M1
`M2`		-0.01	1.6	1000 meters	0.436 - 0.454µm	1km surface reflectance Band M2
`M3`		-0.01	1.6	1000 meters	0.478 - 0.488µm	1km surface reflectance band M3
`M4`		-0.01	1.6	1000 meters	0.545 - 0.565µm	1km surface reflectance band M4
`M5`		-0.01	1.6	1000 meters	0.662 - 0.682µm	1km surface reflectance band M5
`M7`		-0.01	1.6	1000 meters	0.846 - 0.885µm	1km surface reflectance band M7
`M8`		-0.01	1.6	1000 meters	1.230 - 1.250µm	1km surface reflectance band M8
`M10`		-0.01	1.6	1000 meters	1.580 - 1.640µm	1km surface reflectance band M10
`M11`		-0.01	1.6	1000 meters	2.230 - 2.280µm	1km surface reflectance band M11
`I1`		-0.01	1.6	500 meters	0.600 - 0.680µm	500m surface reflectance band I1
`I2`		-0.01	1.6	500 meters	0.850 - 0.880µm	500m surface reflectance band I2
`I3`		-0.01	1.6	500 meters	1.580 - 1.640µm	500m surface reflectance band I3
`SensorAzimuth`	deg	-180	180	1000 meters		Sensor azimuth angle
`SensorZenith`	deg	0	180	1000 meters		Sensor zenith angle
`SolarAzimuth`	deg	-180	180	1000 meters		Solar azimuth angle
`SolarZenith`	deg	0	180	1000 meters		Solar zenith angle
`iobs_res`		0	254	500 meters		Observation number
`num_observations_1km`		0	127	1000 meters		Number of observations 1km
`num_observations_500m`		0	127	500 meters		Number of observations 500m
`obscov_1km`	%	0	100	1000 meters		Observations coverage 1km
`obscov_500m`	%	0	100	500 meters		Observations coverage 500km
`orbit_pnt`		0	15	1000 meters		Orbit pointer
`QF1`				1000 meters		Quality flags 1
Bitmask for QF1 Bits 0-1: Cloud mask quality 0: Poor 1: Low 2: Medium 3: High Bits 2-3: Cloud detection & confidence 0: Confident clear 1: Probably clear 2: Probably cloudy 3: Confident cloudy Bit 4: Day/night 0: Day 1: Night Bit 5: Low sun mask 0: High 1: Low Bits 6-7: Sun glint 0: None 1: Geometry based 2: Wind speed based 3: Geometry and wind speed based
`QF2`				1000 meters		Quality flags 2
Bitmask for QF2 Bits 0-2: Land/water background 0: Land & desert 1: Land no desert 2: Inland water 3: Sea water 4: 5: Coastal Bit 3: Shadow mask 0: No cloud shadow 1: Shadow Bit 4: Heavy aerosol mask 0: No heavy aerosol 1: Heavy aerosol Bit 5: Snow/ice 0: No snow/ice 1: Snow or ice Bit 6: Thin cirrus reflective 0: No cloud 1: Cloud Bit 7: This cirrus emissive 0: No cloud 1: Cloud
`QF3`				1000 meters		Quality flags 3
Bitmask for QF3 Bit 0: Bad M1 SDR data 0: No 1: Yes Bit 1: Bad M2 SDR data 0: No 1: Yes Bit 2: Bad M3 SDR data 0: No 1: Yes Bit 3: Bad M4 SDR data 0: No 1: Yes Bit 4: Bad M5 SDR data 0: No 1: Yes Bit 5: Bad M7 SDR data 0: No 1: Yes Bit 6: Bad M8 SDR data 0: No 1: Yes Bit 7: Bad M10 SDR data 0: No 1: Yes
`QF4`				1000 meters		Quality flags 4
Bitmask for QF4 Bit 0: Bad M11 SDR data 0: No 1: Yes Bit 1: Bad I1 SDR data 0: No 1: Yes Bit 2: Bad I2 SDR data 0: No 1: Yes Bit 3: Bad I3 SDR data 0: No 1: Yes Bit 4: Overall quality of AOT 0: Good 1: Bad Bit 5: Missing AOT input data 0: No 1: Yes Bit 6: Invalid land AM input data 0: Valid 1: Invalid AM input over land or over ocean Bit 7: Missing PW input data 0: No 1: Yes
`QF5`				1000 meters		Quality flags 5
Bitmask for QF5 Bit 0: Missing ozone input data 0: No 1: Yes Bit 1: Missing surface pressure input data 0: No 1: Yes Bit 2: Overall quality M1 surface reflection data 0: Good 1: Bad Bit 3: Overall quality M2 surface reflection data 0: Good 1: Bad Bit 4: Overall quality M3 surface reflection data 0: Good 1: Bad Bit 5: Overall quality M4 surface reflection data 0: Good 1: Bad Bit 6: Overall quality M5 surface reflection data 0: Good 1: Bad Bit 7: Overall quality M7 surface reflection data 0: Good 1: Bad
`QF6`				1000 meters		Quality flags 6
Bitmask for QF6 Bit 0: Overall quality M8 surface reflection data 0: Good 1: Bad Bit 1: Overall quality M10 surface reflection data 0: Good 1: Bad Bit 2: Overall quality M11 surface reflection data 0: Good 1: Bad Bit 3: Overall quality I1 surface reflection data 0: Good 1: Bad Bit 4: Overall quality I2 surface reflection data 0: Good 1: Bad Bit 5: Overall quality I3 surface reflection data 0: Good 1: Bad
`QF7`				1000 meters		Quality flags 7
Bitmask for QF7 Bit 0: Snow present 0: No 1: Yes Bit 1: Adjacent to cloud 0: No 1: Yes Bits 2-3: Aerosol quantity 0: Climatology 1: Low 2: Average 3: High Bit 4: Thin cirrus flag 0: No 1: Yes
`land_water_mask`		0	7	1000 meters		Land/water mask.

land_water_mask Class Table

Value	Color	Description
0	#0000ff	Shallow_Ocean
1	#008000	Land
2	#ffff00	Coastline
3	#808000	Shallow_Inland
4	#00ffff	Ephemeral
5	#800000	Deep_Inland
6	#ff0000	Continental
7	#000080	Deep_Ocean

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

Vermote, E., Franch, B., Claverie, M. (2023). VIIRS/NPP Surface Reflectance Daily L2G Global 1km and 500m SIN Grid V002 [Data set]. NASA EOSDIS Land Processes Distributed Active Archive Center.

DOIs

https://doi.org/10.5067/VIIRS/VNP09GA.002

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NASA/VIIRS/002/VNP09GA')
                  .filter(ee.Filter.date('2014-05-01', '2014-05-31'));

var rgb = dataset.select(['M5', 'M4', 'M3']);
var rgbVis = {
  min: 0.0,
  max: 0.3
};
Map.setCenter(17.93, 7.71, 2);
Map.addLayer(rgb, rgbVis, 'RGB');

Open in Code Editor

VNP09GA: VIIRS Surface Reflectance Daily 500m and 1km

NASA/VIIRS/002/VNP09GA, daily,nasa,noaa,npp,reflectance,sr,viirs

2012-01-19T00:00:00Z/2024-06-20T00:00:00Z

Google Earth Engine

https://developers.google.com/earth-engine/datasets

https://doi.org/10.5067/VIIRS/VNP09GA.002