TMI SST Near Real-Time Validation Statistics

	TMI SSTs Compared with In Situ Observations
	TMI SSTs Compared with Reynolds SSTs

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

TMI SST minus In Situ Data in Text Format

The file contains daily summary statistics from August, 1998 to the current time for buoys as well as ship based measurements. The start date coincides with GODAE data availability. 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:

TMI 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 TMI, Reynolds weekly fields are interpolated to the TMI observation time. TMI observations between 6 AM and 6 PM local time are considered day; TMI observations between 6 PM and 6 AM local time are considered night. The complete collocated dataset is available below in text format, but for a quick understanding of the NRT error statistics, the previous 100-day bias and standard deviation are plotted below.

TMI SST minus Reynolds Data in Text Format

The file contains daily summary statistics from December, 1997 to the current time.

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