AMSR-E SST Near Real-Time Validation Statistics

	AMSR-E SSTs Compared with In Situ Observations
	AMSR-E SSTs Compared with Reynolds SSTs

AMSR-E SSTs Compared with In Situ Observations

Near real-time (NRT) in situ observations are downloaded from the Global Ocean Data Assimilation Experiment (GODAE) Monterey server, which is sponsored by the Office of Naval Research (ONR) and hosted by the Fleet Numerical Meteorology and Oceanography Center (FNMOC). These observations are obtained by FNMOC from the GTS and processed for the GODAE server. Observations from ship engine room intake, fixed buoy, drifting buoy, ship hull sensors, and CMAN stations are included in the dataset. See the USGODAE Project for the complete SURFOBS dataset and a detailed description.

To perform this comparison with AMSR-E, in situ observations are collocated with the closest AMSR-E SST observations (within 25 kilometers; to the nearest AMSR-E observation time). The complete collocated dataset is available in text format (see link below images), but for a quick understanding of the NRT error statistics, the previous 50-day bias and standard deviation are plotted below.

AMSR-E SST minus In Situ Data in Text Format

The file contains daily summary statistics from June, 2002 to the current time for buoys as well as ship based measurements. Note that ship based measurements have a significantly higher degree of variability than buoys.

The format for each line of text in the file is as follows:

AMSR-E SSTs Compared with Reynolds SSTs

Commonly referred to as Reynolds, NCEP OI is a global, weekly 1°x1° SST product. It is a bias adjusted optimum interpolation of AVHRR SSTs and in situ observations following Reynolds and Smith (1994). The previous week's analysis is available every Monday from NOAA Optimum Interpolation Sea Surface Temperature Analysis.

To perform this comparison with AMSR-E, Reynolds weekly fields are interpolated to the AMSR-E observation time. AMSR-E observations between 6 AM and 6 PM local time are considered day; AMSR-E observations between 6 PM and 6 AM local time are considered night. The complete collocated dataset is available in text format (see link below images), but for a quick understanding of the NRT error statistics, recent bias and standard deviation are plotted below.

AMSR-E SST minus Reynolds Data in Text Format

The file contains daily summary statistics from June, 2002 to the current time.

The format for each line of text in the file is as follows: