Moderate Resolution Imaging Spectroradiometer (MODIS)

LANCE MODIS transitioned land processing to Collection version, C61, on April 1, 2021.

To help users transition, the MODIS NRT processing system will run collections C6 and C61 in parallel from January 20, 2021. During the transition (Jan 20 - April 1) NRT4 will distribute C61 and NRT3 C6 land products. More information

NOTE: The MAIAC (MCD19*) suite of products will continue in C6 for now, while updates are finalized.

About Collection 6.1

MODIS Collection 6.1 (C61) addresses known issues and inconsistencies in the C6 L1B products, revealed by the MODIS Calibration Science Team (MCST), after the completion of the C6 reprocessing and hence most C61 land NRT products are largely identical to C6 equivalents, barring small changes introduced by the changes in L1B. The only other notable change in C61 has been a correction to flagging of some high-aerosol areas, in the L2 Land Surface-Reflectance (LSR) that is mostly seen over brighter desert areas. For further details on the C61 L1B changes and minor updates to other land products, users are requested to refer to this C61 Land change document. Additional details regarding the revision to the C61 L2 LSR high-aerosol flagging can be found here.

Users are requested to make a note of this proposed change in LANCE NRT MODIS products. For performance comparison of the C61 NRT and STD products, users can still refer to the C6 performance metrics that can be found that can be found here.

If you have any further concern or question about this transition, please contact the LANCE MODIS User Support and for questions or information related to change in product quality contact land QA team.

Printed Wire Assembly (PWA) failure

The MODIS instrument aboard the Terra satellite experienced a Printed Wire Assembly (PWA) failure on 5 October 2020. This resulted in a reduction in the overall Terra daytime coverage and many of the MODIS/Terra imagery layers have a slightly jagged appearance with less coverage over the northern high latitude regions. This issue will affect land daytime MODIS/Terra products that primarily rely on the Reflective Solar Bands (RSB) (i.e. visible bands) indefinitely. Learn more about the issue.

Scripts and Downloads

For scripted/automatic downloads please see instructions at https://nrt3.modaps.eosdis.nasa.gov/help/downloads

Moderate Resolution Imaging Spectroradiometer (MODIS) Corrected Reflectance Imagery is produced in near real-time (NRT) to provide natural looking images. Read more about NRT MODIS Corrected Reflectance.

MODIS Data
Collection 6.1 MODIS/Terra and MODIS/Aqua
Collection 6.1 MODIS/Terra and MODIS/Aqua Combined
Collection 6 MODIS/Terra and MODIS/Aqua
Collection 6 MODIS/Terra and MODIS/Aqua Combined

HTTPS download: https://nrt3.modaps.eosdis.nasa.gov or https://nrt4.modaps.eosdis.nasa.gov

Directory path for C6: archive/allData/6/<product>/<year>/<dataday> or allData/6/<product>/Recent
Directory path for C6.1: archive/allData/61/<product>/<year>/<dataday> or allData/61/<product>/Recent

More about Collection 6.1

More about Collection 6.1

NASA's Land, Atmosphere Near real-time Capability for EOS (LANCE)-Moderate Resolution Imaging Spectroradiometer (MODIS) has released an improved version, Collection 6.1 (C6.1), for all MODIS Level-1 (L1) and higher-level Level-2 (L2) & Level-3 (L3) Atmosphere Team products.

The decision to create a new improved Collection 6.1 was driven by the need to address a number of issues in the current Collection 6 Level-1B (L1B) data. These L1B issues had a negative impact in varying degrees in downstream MODIS Atmosphere Level-2 (L2) and Level-3 (L3) products.

All MODIS L1 and Atmosphere product users are encouraged to switch over to the C6.1 products. Please note the change in URL from allData/6 to allData/61. Users who use a script to download data will need to adjust their script.

The C6 L1 and atmosphere products will continue in parallel with the C6.1 collection processing and be made available on https://nrt3.modaps.eosdis.nasa.gov/archive/allData/6/ until the end of November 2017, at which time, only C6.1 of Terra- and Aqua-MODIS L1 and atmosphere NRT products will be available.

Collection 6.1 Land Products

Starting in November 2017, C6 Land processing stream will use the C6.1 L1B as input, with no change to the land science processing algorithms. We do not expect to see any significant impact to most of the land products by using upstream C6.1 as inputs except for some minor differences in Terra MODIS snow and sea-ice products because of differences in the Terra cloud mask. Therefore C6 processing of NRT Terra- and Aqua-MODIS Land products will continue until sometime next year (probably around middle of 2018) when C6.1 processing of Land products will start. Therefore, NRT MODIS Land product users should continue to use C6 product at https://nrt3.modaps.eosdis.nasa.gov/archive/allData/6 or https://nrt4.modaps.eosdis.nasa.gov/archive/allData/6.

For a complete list of available C6 and C6.1 Terra- and Aqua-MODIS products, please visit: https://lance3.modaps.eosdis.nasa.gov/data_products/ or https://lance4.modaps.eosdis.nasa.gov/data_products/.

To review updates to C6.1 L1 and Atmosphere products, please visit the MODIS Atmosphere Team page.

Collection 6.1 MODIS/Terra and MODIS/Aqua

Product in Earthdata Search HTTPS (register for access) Volume (GB/day) Browse PGE DOI
Extrapolated Orbital Data
AM1EPHNE
0.000012
N/A
97
10.5067/MODIS/AM1EPHNE.NRT.061
L0 PDS Data, 5-Min Swath
MOD00F
68.91
N/A
95
10.5067/MODIS/MOD00F.NRT.061
L1A Raw Radiances, 5-Min Swath
MOD01
107.35
N/A
01
10.5067/MODIS/MOD01.NRT.061
Geolocation, 5-Min Swath 1km
MOD03
8.28
10.5067/MODIS/MOD03.NRT.061
L1B Calibrated Radiances, 5-Min Swath 1km
MOD021KM
31.09
L1B Radiances Browse
02
10.5067/MODIS/MOD021KM.NRT.061
L1B Calibrated Radiances, 5-Min Swath 500m
MOD02HKM 20.54 10.5067/MODIS/MOD02HKM.NRT.06
L1B Calibrated Radiances, 5-Min Swath 250m
MOD02QKM
21.95
10.5067/MODIS/MOD02QKM.NRT.061
L1B Subsampled Calibrated Radiances, 5-Min Swath 5km
MOD02SSH
0.37
N/A
93
10.5067/MODIS/MOD02SSH.NRT.061
L2 Temperature and Water Vapor Profiles, 5-Min Swath 5km
MOD07_L2
1.71
L2 Total Ozone Burden Browse
L2 Skin Temperature Browse
L2 Lifted Index Browse
L2 Water Vapor Browse
03
10.5067/MODIS/MOD07_L2.NRT.061
L2 Cloud Mask, 5-Min Swath 250m and 1km
MOD35_L2
2.15
N/A
10.5067/MODIS/MOD35_L2.NRT.061
L2 Aerosol, 5-Min Swath 10km
MOD04_L2
0.38
L2 Aerosol Browse
04
10.5067/MODIS/MOD04_L2.NRT.061
L2 Aerosol, 5-Min Swath 3km
MOD04_3K
1.18
N/A
10.5067/MODIS/MOD04_3K.NRT.061
L2 Total Precipitable Water Vapor, 5-Min Swath 1km and 5km
MOD05_L2
0.98
L2 Total Precipitable Water Vapor Browse
10.5067/MODIS/MOD05_L2.NRT.061
L2 Clouds, 5-Min Swath 1km and 5km
MOD06_L2
17.13
L2 Cloud Optical Browse
L2 Cloud Top Browse
L2 Cloud Fraction Browse
6
10.5067/MODIS/MOD06_L2.NRT.061
L3 Value-added Aerosol Optical Depth
MODAODHD
N/A
122
10.5067/MODIS/MODAODHD.NRT.061
GBAD Data, 5-Min Swath
MYDGB0
0.01
N/A
96
10.5067/MODIS/MYDGB0.NRT.061
GBAD Spacecraft Attitude Data
PM1ATTNR_NRT
0.01
10.5067/MODIS/PM1ATTNR_NRT.061
GBAD Spacecraft Ephemeris Data
PM1EPHND_NRT
0.01
10.5067/MODIS/PM1EPHND_NRT.061
L0 PDS Data, Session-Based
MYD00S
71.83
N/A
N/A
10.5067/MODIS/MYD00S.NRT.061
L0 PDS Data, 5-Min Swath
MYD00F
68.46
N/A
95
10.5067/MODIS/MYD00F.NRT.061
L1A Raw Radiances, 5-Min Swath
MYD01
107.47
N/A
01
10.5067/MODIS/MYD01.NRT.061
Geolocation, 5-Min Swath 1km
MYD03
8.28
10.5067/MODIS/MYD03.NRT.061
L1B Calibrated Radiances, 5-Min Swath 1km
MYD021KM
29.53
L1B Radiances Browse
02
10.5067/MODIS/MYD021KM.NRT.061
L1B Calibrated Radiances, 5-Min Swath 500m
MYD02HKM
18.69
10.5067/MODIS/MYD02HKM.NRT.061
L1B Calibrated Radiances, 5-Min Swath 250m
MYD02QKM
22.08
10.5067/MODIS/MYD02QKM.NRT.061
L1B Subsampled Calibrated Radiances, 5-Min Swath 5km
MYD02SSH
3.37
N/A
93
10.5067/MODIS/MYD02SSH.NRT.061
L2 Temperature and Water Vapor Profiles, 5-Min Swath 5km
MYD07_L2
2.01
L2 Total Ozone Burden Browse
L2 Skin Temperature Browse
L2 Lifted Index Browse
L2 Water Vapor Browse
03
10.5067/MODIS/MYD07_L2.NRT.061
L2 Cloud Mask, 5-Min Swath 250m and 1km
MYD35_L2
2.13
N/A
10.5067/MODIS/MYD35_L2.NRT.061
L2 Aerosol, 5-Min Swath 10km
MYD04_L2
0.36
L2 Aerosol Browse
04
10.5067/MODIS/MYD04_L2.NRT.061
L2 Aerosol, 5-Min Swath 3km
MYD04_3K
1.13
10.5067/MODIS/MYD04_3K.NRT.061
L2 Total Precipitable Water Vapor, 5-Min Swath 1km and 5km
MYD05_L2
0.99
L2 Total Precipitable Water Vapor Browse
10.5067/MODIS/MYD05_L2.NRT.061
L2 Clouds, 5-Min Swath 1km and 5km
MYD06_L2
15.44
L2 Cloud Optical Browse
L2 Cirrus Reflectance Browse
L2 Cloud Top Browse
L2 Cloud Fraction Browse
06
10.5067/MODIS/MYD06_L2.NRT.061
L3 Value-added Aerosol Optical Depth
MYDAODHD
N/A
N/A
122
10.5067/MODIS/MYDAODHD.NRT.061

Collection 6.1 MODIS/Terra and MODIS/Aqua Combined

Product in Earthdata Search
HTTPS (register for access) Volume (GB/day)
Browse
PGE
DOI
L3 Value-added Aerosol Optical Depth
MCDAODHD
N/A
L3 Combined Value-Added Aerosol Optical Depth
122
10.5067/MODIS/MCDAODHD.NRT.061
L3 Global Flood Product MCDWD_L3_NRT Coming soon 155 10.5067/MODIS/MCDWD_L3_NRT.061

Collection 6 MODIS/Terra and MODIS/Aqua

Product
HTTPS (register for access) Volume
Browse
Known Issues
PGE
DOI
L2 Snow Cover, 5-Min Swath 500m
MOD10_L2
N/A
L2 Snow Cover Browse
N/A
07
10.5067/MODIS/MOD10_L2.NRT.006
L2 Sea Ice Extent, 5-Min Swath 1km
MOD29
0.29
L2 Sea Ice Browse
N/A
08
10.5067/MODIS/MOD29.NRT.006
L2 Thermal Anomalies / Fire, 5-Min Swath 1km
MOD14
4.91
L2 Thermal Anomalies / Fire Browse
N/A
30
10.5067/MODIS/MOD14.NRT.006
L2 Surface Reflectance, 5-Min Swath 250m, 500m, and 1km
MOD09
51.04
L2 Surface Reflectance Browse
N/A
11
10.5067/MODIS/MOD09.NRT.006
L2 Surface Temperature and Emissivity, 5-Min Swath 1km
MOD11_L2
0.62
L2 Surface Temperature Browse
N/A
16
10.5067/MODIS/MOD11_L2.NRT.006
L2G Daytime Geolocation Angles, Daily 1km
MODMGGAD
3.20
N/A
N/A
12
10.5067/MODIS/MODMGGAD.NRT.006
L2G Daytime Pointers, Daily 500m
MODPTHKM
6.37
10.5067/MODIS/MODPTHKM.NRT.006
L2G Daytime Pointers, Daily 250m
MODPTQKM
24.54
10.5067/MODIS/MODPTQKM.NRT.006
L2G Light Surface Reflectance - Daily 500m and 1km
MOD09GA
32.91
L2G Surface Reflectance Browse
N/A
13
10.5067/MODIS/MOD09GA.NRT.006
L2G Light Surface Reflectance - Daily 250m
MOD09GQ
32.43
10.5067/MODIS/MOD09GQ.NRT.006
L2G Surface Reflectance - Daily 500m
MOD09GHK
29.02
N/A
10.5067/MODIS/MOD09GHK.NRT.006
L2G Surface Reflectance - Daily 250m
MOD09GQK
38.28
10.5067/MODIS/MOD09GQK.NRT.006
L2G Surface Reflectance State - Daily 1km
MOD09GST
0.88
10.5067/MODIS/MOD09GST.NRT.006
L2G Daytime Thermal Bands - Daily 1km
MODTBGD
4.04
10.5067/MODIS/MODTBGD.NRT.006
L3 Aerosol Optical Thickness, Climate Modeling Grid
MOD09CMA
0.38
N/A
N/A
75
10.5067/MODIS/MOD09CMA.NRT.006
L3 Surface Reflectance, Climate Modeling Grid
MOD09CMG
0.54
L3 Surface Reflectance Browse
10.5067/MODIS/MOD09CMG.NRT.006
L3 Daily Rolling 8-Day Surface Reflectance - 500m
MOD09A1N
17.81
L3 Daily Rolling-8-Day Surface Reflectance Browse
N/A
21N
10.5067/MODIS/MOD09A1N.NRT.006
L3 Daily Rolling 8-Day Surface Reflectance - 250m
MOD09Q1N
16.39
N/A
10.5067/MODIS/MOD09Q1N.NRT.006
L3 Daily Rolling-8-Day Vegetation Indices - 500m
MOD13A4N
8.02
L3 Daily Rolling-8-Day Vegetation Indices (500m) Browse
N/A
25N
10.5067/MODIS/MOD13A4N.NRT.006
L3 Daily Rolling-8-Day Vegetation Indices - 250m
MOD13Q4N
25.07
L3 Daily Rolling-8-Day Vegetation Indices (250m) Browse
10.5067/MODIS/MOD13Q4N.NRT.006
L2 Snow Cover, 5-Min Swath 500m
MYD10_L2
N/A
L2 Snow Cover Browse
N/A
07
10.5067/MODIS/MYD10_L2.NRT.006
L2 Sea Ice Extent, 5-Min Swath 1km
MYD29
0.30
L2 Sea Ice Browse
N/A
08
10.5067/MODIS/MYD29.NRT.006
L2 Thermal Anomalies / Fire, 5-Min Swath 1km
MYD14
4.9
L2 Thermal Anomalies / Fire Browse
N/A
30
10.5067/MODIS/MYD14.NRT.006
L2 Surface Reflectance, 5-Min Swath 250m, 500m, and 1km
MYD09
48.19
L2 Surface Reflectance Browse
N/A
11
10.5067/MODIS/MYD09.NRT.006
L2 Surface Temperature and Emissivity, 5-Min Swath 1km
MYD11_L2
0.64
L2 Surface Temperature Browse
N/A
16
10.5067/MODIS/MYD11_L2.NRT.006
L2G Daytime Geolocation Angles, Daily 1km
MYDMGGAD
3.22
N/A
N/A
12
10.5067/MODIS/MYDMGGAD.NRT.006
L2G Daytime Pointers, Daily 500m
MYDPTHKM
6.36
10.5067/MODIS/MYDPTHKM.NRT.006
L2G Daytime Pointers, Daily 250m
MYDPTQKM
24.50
10.5067/MODIS/MYDPTQKM.NRT.006
L2G Light Surface Reflectance - Daily 500m and 1km
MYD09GA
30.69
L2G Surface Reflectance Browse
N/A
13
10.5067/MODIS/MYD09GA.NRT.006
L2G Light Surface Reflectance - Daily 250m
MYD09GQ
31.06
10.5067/MODIS/MYD09GQ.NRT.006
L2G Surface Reflectance - Daily 500m
MYD09GHK
27.46
N/A
10.5067/MODIS/MYD09GHK.NRT.006
L2G Surface Reflectance - Daily 250m
MYD09GQK
38.16
10.5067/MODIS/MYD09GQK.NRT.006
L2G Surface Reflectance State - Daily 1km
MYD09GST
0.89
10.5067/MODIS/MYD09GST.NRT.006
L2G Daytime Thermal Bands - Daily 1km
MYDTBGD
4.08
10.5067/MODIS/MYDTBGD.NRT.006
L3 Aerosol Optical Thickness, Climate Modeling Grid
MYD09CMA
0.35
N/A
N/A
75
10.5067/MODIS/MYD09CMA.NRT.006
L3 Surface Reflectance, Climate Modeling Grid
MYD09CMG
0.54
L3 Surface Reflectance Browse
10.5067/MODIS/MYD09CMG.NRT.006

Collection 6 MODIS/Terra and MODIS/Aqua Combined

Product in Earthdata Search
HTTPS (register for access) Volume (GB/day)
Browse
Known Issues
PGE
DOI
MODIS/Terra+Aqua Land Surface BRF Daily L2G Global 500m and 1km SIN Grid (MAIAC) 
MCD19A1N
5
N/A
N/A
113N
10.5067/MODIS/MCD19A1N.NRT.006
MODIS/Terra+Aqua Land Aerosol Optical Depth Daily L2G Global 1km SIN Grid (MAIAC)
MCD19A2N
1.4
N/A
N/A
113N
10.5067/MODIS/MCD19A2N.NRT.006
MODIS/Terra+Aqua BRDF Model Parameters Daily NRT L3 Global 1km SIN Grid (MAIAC)
MCD19A3N 1.8
N/A
N/A
23N
10.5067/MODIS/MCD19A3N.NRT.006
MODIS/T+A BRDF/Albedo Model Parameters Daily L3 Global - 500m
MCD43A1N
16.8
N/A
N/A
23N
10.5067/MODIS/MCD43A1N.NRT.006
MODIS/T+A BRDF/Albedo Quality Daily L3 Global - 500m
MCD43A2N
4.2
N/A
N/A
23N
10.5067/MODIS/MCD43A2N.NRT.006
MODIS/T+A BRDF/Albedo Daily L3 Global - 500m
MCD43A3N
11.5 N/A N/A 23N 10.5067/MODIS/MCD43A3N.NRT.006
MODIS/T+A BRDF/Albedo Nadir BRDF-Adjusted Reflectance (NBAR) Daily L3 Global - 500m
MCD43A4N
6.2 N/A N/A 23N 10.5067/MODIS/MCD43A4N.NRT.006


MODIS Corrected Reflectance Imagery

MODIS Corrected Reflectance Imagery

The MODIS Corrected Reflectance imagery is only produced in near real-time. It was developed to provide natural-looking images by removing gross atmospheric effects such as Rayleigh scattering from the visible bands. By contrast, the Surface Reflectance (SR) product is available in near real-time and as a standard product. Surface Reflectance provides a more complete atmospheric correction algorithm that includes aerosol correction and is designed to derive land surface properties. In clear atmospheric conditions the corrected reflectance product is similar to the SR product but they depart from each other in the presence of aerosols.

Band Combinations

MODIS (Terra/Aqua) Corrected Reflectance (True Color)

True Color: Red = Band 1 (670nm), Green = Band 4 (565nm), Blue = Band 3 (479nm)

These images are called true-color or natural color because this combination of wavelengths is similar to what the human eye would see. The images are natural-looking images of land surface, oceanic and atmospheric features. The downside of this set of bands is that they tend to produce a hazy image. This layer is similar to the VIIRS Corrected Reflectance Bands I1, M4, M3 layer.

MODIS (Terra/Aqua) Corrected Reflectance (Bands 7, 2, 1)

False Color: Red = Band 7 (2155 nm), Green = Band 2 (876 nm), Blue = Band 1 (670 nm)

This combination is most useful for distinguishing burn scars from naturally low vegetation or bare soil and enhancing floods. This combination can also be used to distinguish snow and ice from clouds. Snow and ice are very reflective in the visible part of the spectrum (Band 1), and absorbent in Bands 2 (near infrared) and 7 (short-wave infrared, or SWIR). Thick ice and snow appear vivid sky blue, while small ice crystals in high-level clouds will also appear blueish, and water clouds will appear white. This layer is similar to the VIIRS Corrected Reflectance Bands M11, I2, I1 layer.

The MODIS Corrected Reflectance imagery is available only as near real-time imagery. The imagery can be visualized in Worldview and the Global Imagery Browse Services (GIBS). The sensor resolution is 500 m and 250 m (Bands 1 and 2 have a sensor resolution of 250 m, Bands 3 – 7 have a sensor resolution of 500 m, and Bands 8 - 36 are 1 km. Band 1 is used to sharpen Band 3, 4, 6, and 7), imagery resolution is 250 m, and the temporal resolution is daily.

Applications of MODIS Corrected Reflectance (Bands 7, 2, 1)

Colors

Vegetation: Green

Water: Black or dark blue

Desert/Naturally bare soil: Sandy pink

Burn scar: Red to reddish-brown, depending on the nature of the pre-fire vegetation and the severity of the burn.

Vegetation and bare ground

Vegetation is very reflective in the near infrared (Band 2), and absorbent in Band 1 and Band 7. Assigning that band to green means even the smallest hint of vegetation will appear bright green in the image. Naturally bare soil, like a desert, is reflective in all bands used in this image, but more so in the SWIR (Band 7, red) and so soils will often have a pinkish tinge.

Burned areas

Burned areas or fire-affected areas are characterized by deposits of charcoal and ash, removal of vegetation and/or the alteration of vegetation structure. When bare soil becomes exposed, the brightness in Band 1 may increase, but that may be offset by the presence of black carbon residue; the near infrared (Band 2) will become darker, and Band 7 becomes more reflective. When assigned to red in the image, Band 7 will show burn scars as deep or bright red, depending on the type of vegetation burned, the amount of residue, or the completeness of the burn.

Water

Liquid water on the ground appears very dark since it absorbs in the red and the SWIR. Sediments in water appear dark blue. Ice and snow appear as bright turquoise. Clouds comprised of small water droplets scatter light equally in both the visible and the SWIR and will appear white. These clouds are usually lower to the ground and warmer. High and cold clouds are comprised of ice crystals and will appear turquoise.

MODIS (Terra) Corrected Reflectance (Bands 3, 6, 7)

False Color: Red = Band 3 (479 nm), Green = Band 6 (1652 nm), Blue = Band 7 (2155 nm)

This combination is used to map snow and ice. Snow and ice are very reflective in the visible part of the spectrum (Band 3), and very absorbent in Bands 6 and 7 (short-wave infrared, or SWIR). This band combination is good for distinguishing liquid water from frozen water, for example, clouds over snow, ice cloud versus water cloud; or floods from dense vegetation. This band combination is only available for MODIS (Terra) because 70% of the band 6 sensors on the MODIS instrument on the Aqua satellite failed shortly after launch. This layer is similar to the VIIRS Corrected Reflectance Bands M3, I3, M11 layer.

Applications of MODIS Corrected Reflectance (Bands 3, 6, 7)

Colors

Vegetation: Green

Ice or snow: Red

Liquid water on the ground: Black or dark red

Liquid water clouds: White

Ice clouds: Peach

Desert: Light blue-green

Snow and Ice

Since the only visible light used in these images (Band 3) is assigned to red, snow and ice appear bright red. The more ice, the stronger the absorption in the SWIR bands, and the more red the color. Thick ice and snow appear vivid red (or red-orange), while small ice crystals in high-level clouds will appear reddish-orange or peach.

Vegetation

Vegetation will appear green in this band combination, as vegetation is absorbent in Bands 3 and 7, but reflective in Band 6. Bare soil and deserts will appear bright cyan in the image since it much more reflective in Band 6 and 7 than Band 3.

Water

Liquid water on the ground will appear very dark since it absorbs in the red and the SWIR, but small liquid water drops in clouds scatter light equally in both the visible and the SWIR, and will therefore appear white. Sediments in water appear dark red.

MODIS Surface Reflectance

MODIS Surface Reflectance

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. Compared to Corrected Reflectance imagery, the MODIS Land Surface Reflectance product (MOD09) is a more complete atmospheric correction algorithm that includes aerosol correction, and is designed to derive land surface properties. In clear atmospheric conditions the Corrected Reflectance product is very similar to the MOD09 product, but they depart from each other in presence of aerosols.

Layers visible in GIBS and Worldview include:

MODIS (Terra/Aqua) Land Surface Reflectance (True Color)

True Color: Red = Band 1 (670 nm), Green = Band 4 (565 nm), Blue = Band 3 (479 nm)

These images are called true-color or natural color because this combination of wavelengths is similar to what the human eye would see. The images are natural-looking images of land surface, oceanic and atmospheric features.

MODIS (Terra/Aqua) Land Surface Reflectance (Bands 7, 2, 1)

False Color: Red = Band 7 (2155 nm), Green = Band 2 (876 nm), Blue = Band 1 (670 nm)

This combination is most useful for distinguishing burn scars from naturally low vegetation or bare soil and enhancing floods. Vegetation will appear green and burned areas will appear reddish.

MODIS (Terra/Aqua) Land Surface Reflectance (Bands 1, 2, 1)

False Color: Red= Band 1 (670 nm), Green = Band 2 (876 nm), Blue = Band 1 (670 nm)

Vegetation is very reflective in the near infrared (Band 2), and absorbent in Band 1. Assigning band 2 to green means even the smallest hint of vegetation will appear bright green in the image. Liquid water on the ground will be very dark since it absorbs in the red and the SWIR and sediments in water appear pink. This band combination is good for identifying vegetation changes, drought and floods. This layer is only available as a Surface Reflectance layer, there is no corrected reflectance version of this layer.

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Page Last Updated: Mar 8, 2021 at 11:37 AM EST