MODAPS PCR 07-013

PCR Number 07-013
Date 2007-06-27
Initiator Zhengming Wan
Abstract Fix missing LST and emissive data at some grids in MOD11B1/MYD11B1.
Problem Statement Missing LST_Day_6km or LST_Night_6km and emissive bands 20 - 29 at some grids in MOD11B1/MYD11B1, usually in the cooling season.
Description of Change Make a minor change in mod11_lstB1.c to fix the above missing data problem by considering the temporal constraint at the beginning of searching for pairs of daytime and nighttime MODIS observations.
Products Affected L3 LST (MOD11B1)
Software Affected PGE16
Processing String to Receive the Change Terra Forward, Terra Reprocessing, Aqua Forward, Aqua Reprocessing
Downstream Product Effects L3 Daily, 8-day, and Monthly CMG LST (MOD11C1, MOD11C2, MOD11C3)
Data Granules to be Used for Science Testing Terra MODIS data in 2001-361 - 2001-365, 2002-001 - 2002-004, and 2002-121 - 2002-181 in tile h30v11.
Justification After avoiding invalid pairs of daytime and nighttime MODIS observations, the day/night algorithm will provides more valid surface temperature and emissivity data, especially in the cooling season.
Effective Date for Implementation of Change  
Status PI approved. Sadashiva Devadiga approved for Land, Vincent Salomonsom approved on 07/23/07