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Reflectance Data Access and Tools

From discovery to visualization, data tools such as Worldview, Earthdata Search, and Fire Information for Resource Management System (FIRMS) guide users in making the most of reflectance data.

Reflectance Datasets

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Dataset Sort descending	Version	Platform	Instrument	Temporal Extent	Spatial Extent	Spatial Resolution	Data Format
NOAA-21 VIIRS Level-2 Regional Ocean Color (OC) Data, version 2025.0	2025.0	NOAA-21	VIIRS	2022-11-10 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
NOAA-21 VIIRS Level-3 Global Binned Remote-Sensing Reflectance (RRS) - Near Real-time (NRT) Data, version 2025.0	2025.0	NOAA-21	VIIRS	2022-11-10 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
NOAA-21 VIIRS Level-3 Global Binned Remote-Sensing Reflectance (RRS) Data, version 2025.0	2025.0	NOAA-21	VIIRS	2022-11-10 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
NOAA-21 VIIRS Level-3 Global Mapped Remote-Sensing Reflectance (RRS) - Near Real-time (NRT) Data, version 2025.0	2025.0	NOAA-21	VIIRS	2022-11-10 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
NOAA-21 VIIRS Level-3 Global Mapped Remote-Sensing Reflectance (RRS) Data, version 2025.0	2025.0	NOAA-21	VIIRS	2022-11-10 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
OLCI/Sentinel-3A L1 Full Resolution Top of Atmosphere Reflectance	1	Sentinel-3A	OLCI	2016-04-25 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
OLCI/Sentinel-3A L1 Reduced Resolution Top of Atmosphere Reflectance	1	Sentinel-3A	OLCI	2016-04-25 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
OLCI/Sentinel-3B L1 Full Resolution Top of Atmosphere Reflectance	1	Sentinel-3B	OLCI	2018-05-14 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
OLCI/Sentinel-3B L1 Reduced Resolution Top of Atmosphere Reflectance	1	Sentinel-3B	OLCI	2018-05-14 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4
OMI/Aura Global Geometry-Dependent Surface LER 1-Orbit L2 Swath 13x24km V004 (OMGLER) at GES DISC	004	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	24 Kilometers x 13 Kilometers
OMI/Aura Global Geometry-Dependent Surface LER 1-Orbit L2 Swath 13x24km V3 (OMGLER) at GES DISC	003	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	24 Kilometers x 13 Kilometers
OMI/Aura Ozone (O3) Total Column 1-Orbit L2 Swath 13x24 km V004 NRT	004	Aura	OMI	2004-07-15	N: 90 S: -90 E: 180 W: -180
OMI/Aura Ozone (O3) Total Column Daily L2 Global Gridded 0.25 degree x 0.25 degree V004 (OMTO3G) at GES DISC	004	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	24 Kilometers x 13 Kilometers
OMI/Aura Ozone (O3) Total Column Daily L2 Global Gridded 0.25 degree x 0.25 degree V3 (OMTO3G) at GES DISC	003	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	24 Kilometers x 13 Kilometers
OMI/Aura Ozone(O3) Total Column 1-Orbit L2 Swath 13x24 km V003 (OMTO3) at GES DISC	003	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	24 Kilometers x 13 Kilometers
OMI/Aura Ozone(O3) Total Column 1-Orbit L2 Swath 13x24 km V004 (OMTO3) at GES DISC	004	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	24 Kilometers x 13 Kilometers
OMI/Aura TOMS-Like Ozone, Aerosol Index, Cloud Radiance Fraction L3 1 day 1 degree x 1 degree V004 (OMTO3d) at GES DISC	004	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	1 Decimal Degrees x 1 Decimal Degrees
OMI/Aura TOMS-Like Ozone, Aerosol Index, Cloud Radiance Fraction L3 1 day 1 degree x 1 degree V3 (OMTO3d) at GES DISC	003	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	1 Decimal Degrees x 1 Decimal Degrees
OMI/Aura TOMS-Like Ozone and Radiative Cloud Fraction L3 1 day 0.25 degree x 0.25 degree V004 (OMTO3e) at GES DISC	004	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	0.25 Decimal Degrees x 0.25 Decimal Degrees
OMI/Aura TOMS-Like Ozone and Radiative Cloud Fraction L3 1 day 0.25 degree x 0.25 degree V3 (OMTO3e) at GES DISC	003	Aura	OMI	2004-10-01 to Present	N: 90 S: -90 E: 180 W: -180	0.25 Decimal Degrees x 0.25 Decimal Degrees
OrbView-2 SeaWiFS Level-2 Regional Global Area Coverage (GAC) Ocean Color (OC) Data, version 2022.0	2022.0	OrbView-2	SeaWiFS	1997-09-04 to 2010-12-11	N: 90 S: -90 E: 180 W: -180		netCDF-4
OrbView-2 SeaWiFS Level-2 Regional Merged Local Area Coverage (MLAC) Ocean Color (OC) Data, version 2022.0	2022.0	OrbView-2	SeaWiFS	1997-09-04 to 2010-12-11	N: 90 S: -90 E: 180 W: -180		netCDF-4
OrbView-2 SeaWiFS Level-3 Global Binned Remote-Sensing Reflectance (RRS) Data, version 2022.0	2022.0	OrbView-2	SeaWiFS	1997-09-04 to 2010-12-11	N: 90 S: -90 E: 180 W: -180		netCDF-4
OrbView-2 SeaWiFS Level-3 Global Mapped Remote-Sensing Reflectance (RRS) Data, version 2022.0	2022.0	OrbView-2	SeaWiFS	1997-09-04 to 2010-12-11	N: 90 S: -90 E: 180 W: -180		netCDF-4
PACE HARP2 Level-2 Regional Aerosol Over Land Optical Properties, FastMAPOL Algorithm - Near Real-time (NRT) Data, version 4.0	4.0	PACE	HARP2	2024-02-05 to Present	N: 90 S: -90 E: 180 W: -180		netCDF-4

Featured Reflectance Observation Method: MODIS

The Moderate Resolution Imaging Spectroradiometer (MODIS) is a key instrument aboard the Terra and Aqua platforms. Terra and Aqua survey Earth's surface every one to two days, acquiring data in 36 spectral bands. The MODIS surface reflectance products provide an estimate of the surface spectral reflectance as it would be measured at ground level in the absence of atmospheric scattering or absorption.

Earthdata graphic identifier on top of image of Earth

ORNL DAAC's MODIS and VIIRS Data Tools and Services at your Fingertips

Join us to learn how to discover, subset, access and visualize both MODIS and VIIRS data products using a suite of user-friendly tools developed by NASA's ORNL DAAC.

A screenshot showing a portion of the FIRMS active fire map showing ultra real-time data

FIRMS Adds Ultra Real-Time Data from MODIS and VIIRS

Scientists develop routine service for wildfire detection in the continental United States with a latency of less than 60 seconds.

6 MIN READ

True color corrected reflectance image of Africa, Europe, and Asia from the VIIRS instrument aboard the NOAA-21 satellite

From MODIS to VIIRS: Continuing the Legacy

The Visible Infrared Imaging Radiometer Suite (VIIRS) will help ensure continuity of Earth observations after the upcoming retirement of the Moderate Resolution Imaging Spectroradiometer (MODIS).

Swath coverage for the continental US by OLI onboard Landsat 8 (orange) and Landsat 9 (red) on July 13, 2022

Characteristics of VIIRS, MODIS, and OLI Sensors and their Effects on the Spatial Extent of Daily Active Fire Data

Our experts break down the similarities and differences of Earth observation sensors operated by NASA.

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