MYD09GQ.005 Aqua Surface Reflectance Daily L2G Global 250m [deprecated]

Page Summary

• This dataset, providing MODIS Surface Reflectance products, is superseded by MODIS/061/MYD09GQ.

• The MYD09GQ product offers daily surface spectral reflectance data at 250-meter resolution in Bands 1 and 2.

• It is recommended to use this product in conjunction with MOD09GA for quality and viewing geometry information.

• MODIS data and products from LP DAAC have no restrictions on subsequent use, sale, or redistribution.

Caution: This dataset has been superseded by MODIS/061/MYD09GQ.

Dataset Availability

2002-07-04T00:00:00Z–2017-03-30T00:00:00Z

Dataset Producer

NASA LP DAAC at the USGS EROS Center

Earth Engine Snippet

ee.ImageCollection("MODIS/MYD09GQ")

Cadence

1 Day

Tags

aqua

daily

global

modis

myd09gq

satellite-imagery

surface-reflectance

usgs

Description

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. Low-level data are corrected for atmospheric gases and aerosols, yielding a level-2 basis for several higher-order gridded level-2 (L2G) and level-3 products.

MYD09GQ provides Bands 1 and 2 at a 250-meter resolution in a daily gridded L2G product in the Sinusoidal projection. Science Data Sets provided for this product include reflectance for Bands 1 and 2, a quality rating, observation coverage, and observation number. This product is meant to be used in conjunction with the MOD09GA where important quality and viewing geometry information is stored.

Please visit LP DAAC 'Citing Our Data' page for information on citing LP DAAC datasets.

Bands

Bands

Pixel size: 250 meters (all bands)

Name	Min	Max	Scale	Pixel Size	Wavelength	Description
num_observations	0	127		250 meters	None	Number of observations per 250m pixel
sur_refl_b01	-100	16000	0.0001	250 meters	620-670nm	Surface reflectance band 1
sur_refl_b02	-100	16000	0.0001	250 meters	841-876nm	Surface reflectance for band 2
QC_250m				250 meters	None	Surface reflectance quality assurance
Bitmask for QC_250m Bits 0-1: MODLAND QA bits 0: Corrected product produced at ideal quality - all bands 1: Corrected product produced at less than ideal quality - some or all bands 2: Corrected product not produced due to cloud effects - all bands 3: Corrected product not produced for other reasons - some or all bands, may be fill value (11) [Note that a value of (11) overrides a value of (01)] Bits 2-3: Spare (unused) 0: N/A Bits 4-7: Band 1 data quality 0: Highest quality 7: Noisy detector 8: Dead detector, data interpolated in L1B 9: Solar zenith >= 86 degrees 10: Solar zenith >= 85 and < 86 degrees 11: Missing input 12: Internal constant used in place of climatological data for at least one atmospheric constant 13: Correction out of bounds, pixel constrained to extreme allowable value 14: L1B data faulty 15: Not processed due to deep ocean or clouds Bits 8-11: Band 2 data quality 0: Highest quality 7: Noisy detector 8: Dead detector, data interpolated in L1B 9: Solar zenith >= 86 degrees 10: Solar zenith >= 85 and < 86 degrees 11: Missing input 12: Internal constant used in place of climatological data for at least one atmospheric constant 13: Correction out of bounds, pixel constrained to extreme allowable value 14: L1B data faulty 15: Not processed due to deep ocean or clouds Bit 12: Atmospheric correction performed 0: No 1: Yes Bit 13: Adjacency correction performed 0: No 1: Yes Bits 14-15: Spare (unused) 0: N/A
obscov	0	100	0.01	250 meters	None	Observation coverage percent

Terms of Use

Terms of Use

MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.

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MYD09GQ.005 Aqua Surface Reflectance Daily L2G Global 250m [deprecated]

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. Low-level data are corrected for atmospheric gases and aerosols, yielding a level-2 basis for several higher-order gridded level-2 (L2G) and level-3 …

MODIS/MYD09GQ, aqua,daily,global,modis,satellite-imagery,surface-reflectance,usgs

2002-07-04T00:00:00Z/2017-03-30T00:00:00Z

-90 -180 90 180

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