Accession Number : AD0825597

Title :   DATA REQUIREMENTS FOR SYNOPTIC SEA SURFACE TEMPERATURE ANALYSES.

Descriptive Note : Special publication,

Corporate Author : NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS

Personal Author(s) : James, Richard W.

Report Date : OCT 1967

Pagination or Media Count : 29

Abstract : A series of tests was conducted to determine data requirements for synoptic sea surface temperature analyses. Random plots of various concentrations of perfect temperature data were analyzed manually and by computer techniques to establish analysis accuracies as a function of the quantity of data input. A random error function was utilized to introduce errors in the temperature data + or - 1 to 7 F in accuracy and + or - 12 miles in positioning. Analyses of various quantities and qualities of input data show that the present data input would have to be increased by a factor of 5 or 6 to ensure reliable analyses of a complex thermal area. By using improved instrumentation, such as the airborne radiation thermometer (ART), buoys, and the near-surface reference temperature device (NSRT), the requirements for data can be halved. That is, 25 to 30 observations per day per 5-degree square of ocean would be required for areas like the Gulf Stream. For less complex areas, such as the Sargasso Sea, only 6 to 8 reports per day are required for the same size area, assuming the observations are taken by reliable instrumentation. Ship injection temperatures (not NSRT) in any quantity will not provide the desired reliability of analysis in these areas. ART surveys are highly recommended for complex areas where large quantities of fairly reliable data are required. These data would be wasted in less complex areas, where a few buoys of high accuracy can provide sufficient information. (Author)

Descriptors :   (*SEA WATER, SURFACE TEMPERATURE), DATA PROCESSING, OCEANOGRAPHIC DATA, COMPUTER PROGRAMS, OCEANOGRAPHIC EQUIPMENT, PREDICTIONS, QUALITY CONTROL, ACCURACY, DIURNAL VARIATIONS, PERIODIC VARIATIONS, ATLANTIC OCEAN, MAPS.

Subject Categories : Physical and Dynamic Oceanography
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE