This document is a living document that describes the MODIS Land Surface Temperature (LST) products. It is revised as progress is made in the development and assessment of the LST products. Described is the current state of the MODIS LST products. The purpose of the document is to give the potential user of LST products an understanding of the MODIS LST products and the data in those products.

The MODIS LST products MOD11_L2, MOD11A1, MOD11A2, and MOD11B1 have been validated at stage 1 with in situ measurements in 28 clear-sky cases including 19 cases over land sites in the temperature range of 263-322K and the column water vapor range of 0.4-4cm.  More validation activities are under way.

The MOD11C series MODIS LST products at 0.05 degree latitude/longitude climate model grids (CMG) derived from the MOD11B1 product have been released in June 2003.

The descriptions of V4 Terra MODIS LST products (named starting with MOD11) in this users' guide also apply to the V3 and V4 Aqua MODIS LST products (named starting with MYD11) which are generated with the same V4 LST code.

The V4 Users' Guide can be also used for the V041 (Collection 41) MODIS LST products. The C41 MODIS LST products are generated from C5 input data with the V4 LST algorithms.