National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Customer Services Branch Mailing and physical

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Asheville North Carolina 28801-5001 USA 828-271-4800 828-271-4010 828-271-4876 ncdc.orders@noaa.gov 8:00 - 6:00 Eastern http://www.ncdc.noaa.gov/oa/about/ncdccontacts.html Unknown tabular digital data http://www.ncdc.noaa.gov CAC Sea Surface Temperature (SST) Analyses is historical digital data set DS-6150, archived at the National Climatic Data Center (NCDC). The Climate Analysis Center (CAC) SST data set contains in situ SSTs, in situ SSTs blended with Advanced Very High Resolution Radiometer (AVHRR) derived SSTs, blended anomalies, Comprehensive Ocean Atmosphere Data Set (COADS) SST climatology, and Land/Sea Mask. The blended anomalies were produced by Goddard Space Flight Center (GSFC) Distributed Active Archive Centers (DAAC) from the SST climatology data provided by the Climate Analysis Center (predecessor to the Climate Prediction Center (CPC)). The in situ analyses cover 40 degrees south to 60 degrees north. All other gridded analyses are global. The values for Land/Sea Mask are available on a 0.5 x 0.5 degree latitude/longitude grid; all other gridded values are available on a 2 x 2 degree latitude grid. With the exception of the Land Mask, all gridded values are monthly means. The SST field is the analyzed SST, which is obtained by solving Poissons equation forced by satellite analyzed field with internal and external boundary values anchored by an in situ analysis. To make a wide range of climatic data available to researchers and the public. data set C00281 AVHRR > Advanced Very High Resolution Radiometer DOC/NOAA/NESDIS/NCDC 19500101 19951231 Ground Condition Complete As Needed -180.0 180.0 60.0 -40.0 DIF Discipline Keyword Thesaurus Earth Sciences > Atmosphere > Meteorology Earth Sciences > Atmosphere > Climatology Earth Sciences > Atmosphere > Weather Earth Sciences > Ocean > Oceanography ISO 19115 Topic Category ClimatologyMeteorologyAtmosphere 004 Elevation 006 Environment 007 Oceans 014 GCMD Sciences Keyword Valids EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > BRIGHTNESS TEMPERATURE EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > THERMAL INFRARED GCMD Location Valids Pacific Ocean Atlantic Ocean GCMD Location Valids Troposphere Sea Surface None None Not provided Unknown Completeness information not available. Unknown Unknown Both files consist of monthly fields from January 1970 through December 1984. Each field is divided into two regions called ATLANTIC and PACIFIC. The two regions overlap and have been interpolated over land. If the SST array is dimensioned SST (101,51) the SST field can be read by two reads. READ (1,1) IMO,IYR,IX,IY1 FORMAT (4I20) READ (1,2) ((SST(I,J),I=1,101, J=1,51)2 FORMAT (16F5.1)IMO = month (1-12) IX=1 for ATLANTIC, 2 for PACIFICIYR = year (70-84) IY=1 for mean SST and 2 for anomaly SSTThe first index, I, defines the longitude and J defines the latitude of the location of the SST field.For all fields: J-1 is centered at 40S, J-2 is at 38S and so on to J=51 at 60N. For the ATLANTIC fields I-1 is centered at 100W, I-2 is at 98W and so on to I-101 at 100E. For the PACIFIC fields, I=1 is centered at 100E, I-2 is at 102E, and so on to I-101 at 60W.The Sea Surface Temperature (SST) Blended Analyses are contained in the third and fourth files. The third file contains the monthly-analyzed SST fields; the fourth file contains the monthly anomaly SST fields (the monthly climatology has been subtracted from the fields in the third file).The monthly data is available from January 1982 to present on a two-degree latitude and longitude grid. These fields are analyzed from a blend of in situ and AVHRR (advanced very high resolution radiometer) satellite data. A complete description of the analysis procedures is given by Reynolds (1988, Journal of Climate, 1, 75-86).The following statements can read files three and four if the arrays SST and IFLAG are dimensioned (180,90): READ (1,1) IDA,IMO,IYR,IY1 FORMAT (4I20) READ (1,2) (SST(I,J),I=1,180), J=1,91)2 FORMAT (16F5.1) READ (1,3) ((IFLAG (I,J), I=1,180), J=1,91)3 FORMAT (80I1) IDA= number of days of data analyzed IMO= month (1-12) IYR= year (82 to present) IY= 1 for mean SST, 2 for anomaly SSTThe SST field is the analyzed SST, which is obtained by solving Poisons equation forced by a satellite-analyzed field with internal and external boundary values anchored by an in situ analysis. The IFLAG array gives information about each analyzed array as follows:IFLAG = 0: The blended value has been anchored by the satellite analysis; there are at least 10 satellite observations per month.IFLAG = 1: The blended value has been anchored by the in situ analysis; there are at least 5 in situ observations per month. IFLAG = 2: The blended value has been anchored by the satellite analysis; there are less than 10 satellite observations per month.IFLAG = 3: Pole values; the SST mean has been set to -1.8C; the SST anomaly has been set to 0.IFLAG = 5: The blended value has been determined by relaxation of the in situ analysis with satellite forcing; the number of satellite observations is at least 10 per month.IFLAG = 6: The blended value has been determined by relaxation of the in situ analysis with the satellite forcing set to zero; the number of satellite observations is less than 10 per month.IFLAG = 7: The blended value has been determined by extrapolation and is unreliable. Data values north of 80oN and south of 80S always belong to this category.The location of the SST and IFLAG arrays is defined by the first index, I, for longitude and the second index J for latitude. For I=1 the grid is centered at 0, I=2 at 2E and so on eastward to I=180 at 2W (358E). For J=1 the grid is centered at 90S, J=2 at 88S and so on northward to J=91 at 90N. None National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Customer Service Mailing and physical

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Asheville North Carolina 28801-5001 USA 828-271-4800 828-271-4876 NCDC.Orders@noaa.gov DS-6150 Disclaimer: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. 20050927 20041124 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Customer Service Mailing and physical

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Asheville North Carolina 28801-5001 USA 828-271-4800 828-271-4876 NCDC.Orders@noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998