N: 90 S: -90 E: 180 W: -180
Description
The Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) Land Surface Temperature/Emissivity Daily (MYD11A1) Version 6.1 product provides daily per-pixel Land Surface Temperature and Emissivity (LST&E) with 1 kilometer (km) spatial resolution in a 1,200 by 1,200 km grid. The pixel temperature value is derived from the MYD11_L2 swath product. Above 30 degrees latitude, some pixels may have multiple observations where the criteria for clear-sky are met. When this occurs, the pixel value is a result of the average of all qualifying observations. Provided along with the daytime and nighttime surface temperature bands are associated quality control assessments, observation times, view zenith angles, and clear-sky coverages along with bands 31 and 32 emissivities from land cover types.
Known Issues
- For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.
Version Description
Product Summary
Citation
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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File Naming Convention
The file name begins with the Product Short Name (MYD11A1) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2025222), the Tile Identifier which is horizontal tile and vertical tile provided as hXXvYY (h09v09), the Version of the data collection (061), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2025223192913), and the Data Format (hdf).
Documents
USER'S GUIDE
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
PRODUCT QUALITY ASSESSMENT
SCIENCE DATA PRODUCT VALIDATION
Publications Citing This Dataset
Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|
| Clear_day_cov | Day clear-sky coverage | N/A | uint16 | 0 | 1 to 65535 | 0.0005 |
| Clear_night_cov | Night clear-sky coverage | N/A | uint16 | 0 | 1 to 65535 | 0.0005 |
| Day_view_angl | View zenith angle of day observation | Degree | uint8 | 255 | 0 to 130 | N/A |
| Day_view_time | Local time of day observation | Hours | uint8 | 255 | 0 to 240 | 0.1 |
| Emis_31 | Band 31 emissivity | N/A | uint8 | 0 | 1 to 255 | 0.002 |
| Emis_32 | Band 32 emissivity | N/A | uint8 | 0 | 1 to 255 | 0.002 |
| LST_Day_1km | Day Land Surface Temperature | Kelvin | uint16 | 0 | 7500 to 65535 | 0.02 |
| LST_Night_1km | Night Land Surface Temperature | Kelvin | uint16 | 0 | 7500 to 65535 | 0.02 |
| Night_view_angl | View zenith angle of night observation | Degree | uint8 | 255 | 0 to 130 | N/A |
| Night_view_time | Local time of night observation | Hours | uint8 | 255 | 0 to 240 | 0.1 |
| QC_Day | Daytime LST Quality Indicators | Bit Field | uint8 | N/A | 0 to 255 | N/A |
| QC_Night | Nighttime LST Quality indicators | Bit Field | uint8 | N/A | 0 to 255 | N/A |