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THE SPURS-2 REGION IN THE EASTERN TROPICAL PACIFIC WILL ALSO PRESENT A CASE STUDY  INCLUDING AN INTENSE IN-SITU OBSERVATION PERIOD  FOR WHICH THE SATELLITE SSS RECORD CAN PROVIDE THE LONGER TERM CONTEXT OF THE LARGE-SCALE SSS VARIABILITY AND THE RAPIDLY VARYING FRONTAL FEATURES. THE PROPOSED WORK RESPONDS DIRECTLY TO THE NASA SOLICITATION OBJECTIVES IN THREE SPECIFIC WAYS. FIRST  THE PROJECT WILL CONTRIBUTE TO THE RESEARCH THEME 3:  EVALUATION AND IMPROVEMENT OF AQUARIUS AND SMAP SSS PRODUCTS AND TO WORK TO ASSURE THE CONTINUITY AND CONSISTENCY OF THE SSS PRODUCTS ACROSS THE TWO MISSIONS. 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