MYD11A2.005 Land Surface Temperature and Emissivity 8-Day L3 Global 1km [deprecated]

Page Summary

• This dataset provides global 8-day Land Surface Temperature (LST) and Emissivity data derived from daily 1-kilometer MODIS MYD11A1 products.

• The data is available from July 4, 2002, to March 22, 2017, with measurements collected by the Aqua satellite.

• The dataset includes various layers for both daytime and nighttime observations, such as LST, quality control assessments, and view angles.

• Quality control flags and clear sky flags are included to assess the reliability and conditions of the data.

• This Version-5 dataset is considered Validated Stage 2, suitable for use in scientific publications.

Caution: This dataset has been superseded by MODIS/061/MYD11A2.

Dataset Availability

2002-07-04T00:00:00Z–2017-03-22T00:00:00Z

Dataset Producer

NASA LP DAAC at the USGS EROS Center

Earth Engine Snippet

ee.ImageCollection("MODIS/MYD11A2")

Cadence

8 Days

Tags

8-day

aqua

emissivity

global

landuse-landcover

lst

modis

myd11a2

surface-temperature

Description

The level-3 MODIS global Land Surface Temperature (LST) and Emissivity 8-day data are composed from the daily 1-kilometer LST product (MYD11A1) and stored on a 1-km Sinusoidal grid as the average values of clear-sky LSTs during an 8-day period.

MYD11A2 is comprised of the following layers for daytime and nighttime observations:

• LST_Day_1km: Daytime Land Surface Temperatures (K), Scale 0.02
• QC_Day: Daytime Surface Temperature quality control assessments, see QC bit flags
• Day_view_time: Daytime LST Observation Times (Hours), Scale 0.1
• Day_view_angl: Daytime View Zenith Angles (Degrees), Offset -65.0
• LST_Night_1km: Nighttime Land Surface Temperatures (K), Scale 0.02
• QC_Night: Nighttime Surface Temperature quality control assessments, see QC bit flags
• Night_view_time: Nighttime LST Observation Times (Hours), Scale 0.1
• Night_view_angl: Nighttime View Zenith Angles (Degrees), Offset -65.0
• Emis_31: Bands 31 Emissivity, Scale 0.002, Offset 0.49
• Emis_32: Bands 32 Emissivity, Scale 0.002, Offset 0.49
• Clear_sky_days: Clear Sky Day Coverage, see Clear Sky Flags.
• Clear_sky_nights: Clear Sky Nighttime Coverage, see Clear Sky Flags.

QC bit flags:

• Bits 0-1: Mandatory QC Flag
  • 00: LST produced, good quality, not necessary to examine detailed QC.
  • 01: LST produced, unreliable or unquantifiable quality, recommend examination of more detailed QC.
  • 10: LST not produced due to cloud effects.
  • 11: LST not produced primarily due to reasons other than clouds.
• Bits 2-3: Data Quality Flag
  • 00: Good quality L1B in bands 31 and 32.
  • 01: Other quality data.
  • 10: TBD
  • 11: TBD
• Bits 4-5: Emissivity Error Flag
  • 00: Average emissivity error ≤ 0.01
  • 01: Average emissivity error ≤ 0.02
  • 10: Average emissivity error ≤ 0.04
  • 11: Average emissivity error > 0.04
• Bits 6-7: LST Error Flag
  • 00: Average LST error ≤ 1 K
  • 01: Average LST error ≤ 2 K
  • 10: Average LST error ≤ 3 K
  • 11: Average LST error > 3 K

Clear Sky Flags:

• Clear Sky Flag for each day (bit 0 is day 1, bit 1 is day 2, etc):
  • 0: Day/Night is not clear-sky.
  • 1: Day/Night is clear-sky.

Version-5 MODIS/Aqua Land Surface Temperature/Emissivity products are Validated Stage 2, meaning that accuracy has been assessed over a widely distributed set of locations and time periods via several ground-truth and validation efforts. Although there may be later improved versions, these data are ready for use in scientific publications.

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

Bands

Bands

Pixel size: 1000 meters (all bands)

Name	Units	Min	Max	Scale	Offset	Pixel Size	Description
LST_Day_1km	K	7500	65535	0.02		1000 meters	Day land surface temperature
QC_Day						1000 meters	Daytime LST quality indicators
Bitmask for QC_Day Bits 0-1: Mandatory QA flags 0: Pixel produced, good quality, not necessary to examine more detailed QA 1: Pixel produced, unreliable or unquantifiable quality, recommend examination of more detailed QA 2: Pixel not produced due to cloud effects 3: Pixel not produced primarily due to reasons other than cloud (such as ocean pixel, poor input data) Bits 2-3: Data quality flag 0: Good data quality 1: Other quality data 2: TBD 3: TBD Bits 4-5: Emissivity error flag 0: Average emissivity error <= 0.01 1: Average emissivity error <= 0.02 2: Average emissivity error <= 0.04 3: Average emissivity error > 0.04 Bits 6-7: LST error flag 0: Average LST error <= 1K 1: Average LST error <= 2K 2: Average LST error <= 3K 3: Average LST error > 3K
Day_view_time	h	0	240	0.1		1000 meters	Local time of day observation
Day_view_angl	deg	0	130		-65	1000 meters	View zenith angle of day observation
LST_Night_1km	K	7500	65635	0.02		1000 meters	Night land surface temperature
QC_Night						1000 meters	Nighttime LST quality indicators
Bitmask for QC_Night Bits 0-1: Mandatory QA flags 0: Pixel produced, good quality, not necessary to examine more detailed QA 1: Pixel produced, unreliable or unquantifiable quality, recommend examination of more detailed QA 2: Pixel not produced due to cloud effects 3: Pixel not produced primarily due to reasons other than cloud (such as ocean pixel, poor input data) Bits 2-3: Data quality flag 0: Good data quality 1: Other quality data 2: TBD 3: TBD Bits 4-5: Emissivity error flag 0: Average emissivity error <= 0.01 1: Average emissivity error <= 0.02 2: Average emissivity error <= 0.04 3: Average emissivity error > 0.04 Bits 6-7: LST error flag 0: Average LST error <= 1K 1: Average LST error <= 2K 2: Average LST error <= 3K 3: Average LST error > 3K
Night_view_time	h	0	240	0.1		1000 meters	Local time of night observation
Night_view_angl	deg	0	130		-65	1000 meters	View zenith angle of night observation
Emis_31		1	255	0.002	0.49	1000 meters	Band 31 emissivity
Emis_32		1	255	0.002	0.49	1000 meters	Band 32 emissivity
Clear_sky_days						1000 meters	Days in clear-sky conditions
Bitmask for Clear_sky_days Bit 0: Day 1 clear sky flag 0: Day 1 is not clear-sky 1: Day 1 is clear-sky Bit 1: Day 2 clear sky flag 0: Day 2 is not clear-sky 1: Day 2 is clear-sky Bit 2: Day 3 clear sky flag 0: Day 3 is not clear-sky 1: Day 3 is clear-sky Bit 3: Day 4 clear sky flag 0: Day 4 is not clear-sky 1: Day 4 is clear-sky Bit 4: Day 5 clear sky flag 0: Day 5 is not clear-sky 1: Day 5 is clear-sky Bit 5: Day 6 clear sky flag 0: Day 6 is not clear-sky 1: Day 6 is clear-sky Bit 6: Day 7 clear sky flag 0: Day 7 is not clear-sky 1: Day 7 is clear-sky Bit 7: Day 8 clear sky flag 0: Day 8 is not clear-sky 1: Day 8 is clear-sky
Clear_sky_nights						1000 meters	Nights in clear-sky conditions
Bitmask for Clear_sky_nights Bit 0: Night 1 clear sky flag 0: Night 1 is not clear-sky 1: Night 1 is clear-sky Bit 1: Night 2 clear sky flag 0: Night 2 is not clear-sky 1: Night 2 is clear-sky Bit 2: Night 3 clear sky flag 0: Night 3 is not clear-sky 1: Night 3 is clear-sky Bit 3: Night 4 clear sky flag 0: Night 4 is not clear-sky 1: Night 4 is clear-sky Bit 4: Night 5 clear sky flag 0: Night 5 is not clear-sky 1: Night 5 is clear-sky Bit 5: Night 6 clear sky flag 0: Night 6 is not clear-sky 1: Night 6 is clear-sky Bit 6: Night 7 clear sky flag 0: Night 7 is not clear-sky 1: Night 7 is clear-sky Bit 7: Night 8 clear sky flag 0: Night 8 is not clear-sky 1: Night 8 is clear-sky

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MYD11A2.005 Land Surface Temperature and Emissivity 8-Day L3 Global 1km [deprecated]

The level-3 MODIS global Land Surface Temperature (LST) and Emissivity 8-day data are composed from the daily 1-kilometer LST product (MYD11A1) and stored on a 1-km Sinusoidal grid as the average values of clear-sky LSTs during an 8-day period. MYD11A2 is comprised of the following layers for daytime and nighttime …

MODIS/MYD11A2, 8-day,aqua,emissivity,global,landuse-landcover,lst,modis,surface-temperature

2002-07-04T00:00:00Z/2017-03-22T00:00:00Z

-90 -180 90 180

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