Aqua MODIS Daily Land Surface Temperature and Emissivity Global 1km Grid

The MYD11A1 Version 6.1 dataset provides daily global land surface temperature and emissivity estimates at a 1-kilometer spatial resolution. Data is collected by the Aqua satellite's MODIS instrument, processed into a 1200x1200 km sinusoidal grid, and includes quality control bands. This product is produced by NASA and has undergone calibration improvements in its latest version.

Use Cases

• Analyzing urban heat island effects using daytime and nighttime land surface temperature bands.
• Modeling surface energy fluxes by combining temperature data with emissivity values from bands 31 and 32.
• Monitoring drought or vegetation stress through temporal changes in daily surface temperature.
• Assessing data quality for specific pixels using the provided quality control assessment bands.
• Studying polar region climate where pixels above 30 degrees latitude may contain averaged observations from multiple clear-sky passes.

Strengths

• Provides a long-term, daily global record from the Aqua MODIS instrument, a key satellite sensor.
• Includes multiple supporting data layers such as observation times, view zenith angles, and clear-sky coverage for analysis.
• Version 6.1 incorporates specific calibration improvements, including response-versus-scan angle and polarization corrections.

Limitations

• Specific row counts, file sizes, and a complete column list are not provided by any source.
• Above 30 degrees latitude, pixel values represent averages of multiple clear-sky observations, which may complicate single-event analysis.
• Known issues exist and require consultation of an external MODIS/VIIRS Land Quality Assessment website.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Derived from the MYD11_L2 swath product collected by the Aqua satellite's Moderate Resolution Imaging Spectroradiometer (MODIS).

Time Range

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Freshness

2026-03-12 23:50:23.211020

Geography

Global coverage in a 1200 by 1200 km sinusoidal grid.