*2.5. MOD11*

The GOES based LST estimates will be evaluated against LST retrievals from MOD11 Version 6 Land Surface Temperature and Emissivity product [20] (we use both MOD11\_L2 data and MOD11C3 data). The MODIS LST data products are produced as a series of nine products. The sequence begins as a swath at a nominal pixel spatial resolution of 1 km at nadir and a nominal swath coverage of 2030 or 2040 lines along track by 1354 pixels per line in the daily LST product [39]. There are two algorithms used in the daily MODIS LST processing: the generalized split-window LST algorithm [5] and the day/night LST algorithm. New refinements made to these two algorithms are described by *Wan* [20]. The MOD11\_L2 version 6 swath product provides per-pixel land surface temperature (LST) and emissivity. It is produced daily in 5-min temporal increments of satellite acquisition and has a pixel size of 1 km. The MOD11C3 Version 6 product provides monthly land surface temperature (LST) and emissivity values in a 0.05 (5600 m × 5600 m) degree latitude/longitude climate modeling grid (CMG), which has a Geographic grid with 7200 columns and 3600 rows representing the entire globe. The MOD11C3 granule consists of day and night LST and their corresponding quality indicator (QC) layers.
