CCSD1Z00000100000052CSD1R00000300000032 DELIMETER=EOF; TYPE=CCSD1F000001; CCSD1C00000400000013 ADI=NURSNM01; CCSD1R00000300000032 DELIMITER=EOF; TYPE=CCSD1D000002; Documentation of NMC gridded data produced for UARS project ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1) WHOLE DATA SETS ================== DataSetName: ----------- NMC gridded data DataSource: ---------- National Meteorological Center data (NMC)/ National Oceanic and Atmospheric Administration (NOAA) ScientificContact: ------------------ Dr. Alvin Jim Miller Dr. Ron Nagatani Aylin Ongurer NOAA/NWS 5200 Auth Rd, Room 808 Washington, DC 20233 Phone: 301-763-8071 E-mails: aibvax::miller ozone::nagatani ozone::aylin SourceCharacteristics: --------------------- The National Meteorological Center (NMC) geopotential heights and temperatures are derived from two analysis systems: 1) tropospheric fields from 1000mb to 100mb, and 2) stratospheric analyses from 70mb to 04.mb. The tropospheric fields from 1000mb to 100mb are the 1200 GMT gridded fields which are part of the Global Daily Assimilation System (GDAS) described by McPherson et al. (1979), where data from radiosondes, aircraft, satellites, ships, buoys, or any other conventional means are assimilated and merged into meteorological fields (heights, temperature, winds). The stratospheric analyses developed by the NMC Climate Analysis Center are 1200 GMT operational analyses at the 70-0.4mb pressure levels, produced from satellite temperature retrievals and RAOBS via a modified Cressman analysis (Gelman et al., 1987), which is a successive iteration method where the fields are iteratively adjusted by weighted data depending on distance from the grid point. Tropospheric temperature analyses use combined NOAA-10 and NOAA-11 data. The operational analyses now use satellite retrievals based on a minimum variance simultaneous retrieval method described in Goldberg et al. (1988), Fleming et al. (1988), and Fleming et al. (1986). The minimum variance retrieval method is not dependent on week-old regression coeficients of co-located radiosonde data with satellite radiances as was done in the past. The NMC analyses below 10mb are heavily dependent on RAOBS (parti- culary over the continents), but less dependent on the RAOBS and more dependent on the TOVS retrievals over ocean areas and ice covered regions. Moisture (only for Northern hemisphere) and Winds are obtained from the NMC global data assimilation systems (briefly explained above). Analyses from assimilation are on the same gridded fields as temperature and height analyses. InvestigationObjectives: ----------------------- UARS project InstrumentAttributes: N/A -------------------- MeasuredParameters: ------------------ Analyzed fields will be produced for the following parameters: Temperature TEMP K Geopotential Height HEIGHT m Wind Components: WINDS m/s - u comp. of wind wrt grid (U_WIND) - v comp. of wind wrt grid (V_WIND) Moisture MOISTURE % Analyzed fields will be supplied to the Central Data Handling Facility (CDHF) for 12GMT each day, and transferred to the GSFC DAAC for distribution to the user community. The gridded fields are on the standard 65x65 NMC polar stereographic grid oriented 80W (Grid increment 381km at 60N) and 100E (grid increment 381km at 60S); Pole at (33,33). Fields will be produced at 18 standard meteorological levels from 1000 mb to 0.4 mb for heights and temperatures. For moisture only the 6 lowest altitude pressure levels are used and there is no data for the southern hemisphere. For winds there are both U and V components. U comp. and V comp. of wind are given with respect to grid in the data files For the northern hemisphere there is wind data only for the 12 lowest altitude pressure levels (up to the 50 mb level). For the southern hemisphere there is wind data only at the 4 levels 1000, 500, 300, and 250 mb. 18 Standard pressure levels for data (mb): 1000., 850., 700., 500., 400., 300., 250., 200., 150., 100., 70., 50., 30., 10., 5., 2., 1., 0.4 DataSetQuality: -------------- Analysis quality of meteorological fields are continually evaluated and updated at NMC. Within the access codes provided to UARS, errors are attributed to profiles in a general sense, i.e., the errors are computed depending on whether the profile is given in a dense data region or in a poor data region, as over the ocean. DataProcessingOverview: ---------------------- Data used in the NMC analysis are purely from standard NMC sources, i.e., NOAA satellites, radiosondes from the worldwide network, aircraft winds, cloud vectors from satellites, and any other available data transmitted to NMC. See also 'SourceCharacteristics' for the brief description on what processing is applied to data after it is received at NMC. DataUsage: --------- The main use of analyses from the NMC run is to provide an independent analysis for members of the UARS science team to compare with equivalent retrievals derived form UARS instruments. AccessSoftware: -------------- There is a routine at the GSFC DAAC to access the daily produced NMC gridded data (temperature, height, winds and moisture). DataOrganization: ---------------- The data files each contain 1 header record followed by data records. Each data record contains data for one hemisphere at a single pressure altitude. The highest pressure (lowest altitude) record is first in each series of records. Standard pressure levels for NMC data and number of pressure levels for individual parameters are given above in the 'MeasuredParameters' section. FileClassRelationships: ---------------------- There will be four file classes: CORR_ZNMC_SHEIGHT_Ddddd.Vvvvv_Ccc_PROD CORR_ZNMC_SMOISTURE_Ddddd.Vvvvv_Ccc_PROD CORR_ZNMC_STEMP_Ddddd.Vvvvv_Ccc_PROD CORR_ZNMC_SWINDS_Ddddd.Vvvvv_Ccc_PROD (dddd = UARS day, vvvv = data version #, cc = data cycle #) These will comprise grid points fields of analyses for height, moisture, temperature, and winds, with associated header records, as documented below. LitReferences: ------------- McPherson, R., D., K. H. Bergman, R. E. Kistler, G. E. Rasch, and D. S. Gordon: "The NMC Operational Global Data Assimilation System," Mon. Wea. Rev., Vol. 107, pp 1445-61. Fleming, H. E., M. E. Goldberg, and D. S. Crosby, 1988: "Operational Implementation of the Minimum Variance Simultaneous Retrieval Method", Proceedings, AMS Third Conference on Satellite Meteorology and Oceanography, Jan. 31 - Feb. 5, 1988, Anaheim, Calif., pp.16-19. --,--,--, 1986: "Minimum Variance Simultaneous Retrieval of Temperature and Water Vapor from Satellite Radiance Measurements", Preprint Volume, Second Conference on Satellite Meteorology/Remote Sensing and Applications, May 13-16, 1986, Williamsburg, Va. Published by the American Meteorological Society, Boston, Mass., pp 20-23. Golberg, M. D. and J. M. Daniels, 1988: "A Method for Obtaining and Improved Approximation for the Temperature/Moisture Retrieval Problem", Proceeding, AMS Third Conference on Satellite Meteorology and Oceanography, Jan. 31 - Feb. 5, 1988, Anaheim, Calif. pp. 20-23. (Literature on References can be found in the NASA library or can be requested trough National Meteorological Center/ National Oceanic and Atmospheric Administration.) 2) FILE CLASS ============= FileClassName: NMC daily temperature (12GMT) (DEGREE K) gridded data ------------- NMC daily height (12GMT) (GPM) gridded data NMC daily wind (M/SEC) gridded data NMC daily moisture (%) gridded data RecordTypeNames: SFDU_Label_And_UARS_Header_Record, Data_Record --------------- Algorithms: N/A to UARS project ---------- FileClassSyntax: No. Records in the file = 1 + S + N --------------- S = Value (No_levels_for_each_correlative_parameter for Southern hemisphere) N = Value (No_levels_for_each_correlative_parameter for Nouthern hemisphere) FileClassFieldRelationships: --------------------------- The first 428 bytes (of 16964 bytes) of the SFDU_Label_And_UARS_Header_Record, which is always Record#1, must be read first. It includes information on the size of the correlative data records (all the same length) and the total number of records in the file. FileClassMisc: N/A ------------- 3) RECORD ========= 1. SFDU_Label_And_UARS_Header_Record ------------------------------------ RecordName: SFDU_Label_And_UARS_Header_Record ---------- RecordStructure: Fixed Length (Variable length for different --------------- instruments) RecordLength: 16964 bytes (NMC size) ------------ RecordFieldName: Tz_Field, Lz_Field, Ti_Field, Li_Field, --------------- Vi_Field, Project_Name, UARS_PI, UARS_CMI, Correlative_Data_Class, Instrument_Type, Observing_Station_Id, Correlative_Data_File_Type_Id, Start_Time_of_File, Stop_Time_of_File, Maximum_Latitude, Minimum_Latitude, Maximum_Longitude, Minimum_Longitude, Maximum_Altitude_Kilometers, Minimum_Altitude_Kilometers, Maximum_Altitude_Millibars, Minimum_Altitude_Millibars, Record_Size, Number_Records_in_File, Data_Quality_Word#1, Data_Quality_Word#2, User_Comments, Correlative_Data_Parameter#1, Correlative_Data_Parameter#2, Correlative_Data_Parameter#3, Correlative_Data_Parameter#4, Record_Fill RecordSyntax: 32 Fields ------------ #1: Tz_Field #2: Lz_Field #3: Ti_Field #4: Li_Field #5: Vi_Field #6: Project_Name #7: UARS_PI #8: UARS_CMI #9: Correlative_Data_Class #10: Instrument_Type #11: Observing_Station_Id #12: Correlative_Data_File_Type_Id #13: Start_Time_of_File #14: Stop_Time_of_File #15: Maximum_Latitude #16: Minimum_Latitude #17: Maximum_Longitude #18: Minimum_Longitude #19: Maximum_Altitude_Kilometers (blank) #20: Minimum_Altitude_Kilometers (blank) #21: Maximum_Altitude_Millibars #22: Minimum_Altitude_Millibars #23: Record_Size #24: Number_Records_in_File #25: Data_Quality_Word#1 #26: Data_Quality_Word#2 #27: User_Comments #28: Correlative_Data_Parameter#1 #29: Correlative_Data_Parameter#2 #30: Correlative_Data_Parameter#3 #31: Correlative_Data_Parameter#4 #32: Record_Fill 4.1) FIELDS =========== 1.1 Tz_Field ------------ FIELD_NAME: Tz_Field FIELD_MNEMONIC: SFDU1 FIELD_SYNTAX: ASCII Character*12 String. FIELD_RANGE: CCSD1Z000001 FIELD_DESCRIPTION: SFDU Type (Tz) Field. FIELD_REPRESENTATION: 12A FIELD_DISPLAY_FORMAT: A12 1.2 Lz_Field ------------ FIELD_NAME: Lz_Field FIELD_MNEMONIC: SFDU2 FIELD_SYNTAX: ASCII Character*8 String. FIELD_RANGE: 00000068 FIELD_DESCRIPTION: SFDU Type (Lz) Field. FIELD_REPRESENTATION: 8A FIELD_DISPLAY_FORMAT: A8 1.3 Ti_Field ------------ FIELD_NAME: Ti_Field FIELD_MNEMONIC: SFDU3 FIELD_SYNTAX: ASCII Character*12 String. FIELD_RANGE: CCSD1Z000003 FIELD_DESCRIPTION: SFDU Type (Ti) Field. FIELD_REPRESENTATION: 12A FIELD_DISPLAY_FORMAT: A12 1.4 Li_Field ------------ FIELD_NAME: Li_Field FIELD_MNEMONIC: SFDU4 FIELD_SYNTAX: ASCII Character*8 String. FIELD_RANGE: 00000048 FIELD_DESCRIPTION: SFDU Type (Li) Field. FIELD_REPRESENTATION: 8A FIELD_DISPLAY_FORMAT: A8 1.5 Vi_Field ------------ FIELD_NAME: Vi_Field FIELD_MNEMONIC: SFDU5 FIELD_SYNTAX: ASCII Character*48 String. FIELD_RANGE: PROTOCOL=NONE; DELIMITER=EOF; TYPE=NURS1I00NM02; FIELD_DESCRIPTION: SFDU Type (Vi) Field. FIELD_REPRESENTATION: 48A FIELD_DISPLAY_FORMAT: A48 1.6 Project_Name ---------------- FIELD_NAME: Project_Name FIELD_MNEMONIC: PNAME FIELD_SYNTAX: ASCII Character*4 String. FIELD_RANGE: UARS FIELD_DESCRIPTION: The name of the project for which this file is supplied. FIELD_REPRESENTATION: 4A FIELD_DISPLAY_FORMAT: A4 1.7 UARS_PI ----------- FIELD_NAME: UARS_PI FIELD_MNEMONIC: UARSPI FIELD_SYNTAX: ASCII Character*20 String. FIELD_RANGE: A. J. MILLER FIELD_DESCRIPTION: The name of the UARS PI (Principal Investigator) supplying this file. FIELD_REPRESENTATION: 20A (Left Justified) FIELD_DISPLAY_FORMAT: A20 1.8 UARS_CMI ------------ FIELD_NAME: UARS_CMI FIELD_MNEMONIC: CORRM FIELD_SYNTAX: ASCII Character*20 String. FIELD_RANGE: A. J. MILLER FIELD_DESCRIPTION: The name of the UARS CMI (Correlative Measurement Investigator) supplying this file. FIELD_REPRESENTATION: 20A (Left Justified) FIELD_DISPLAY_FORMAT: A20 1.9 Correlative_Data_Class -------------------------- FIELD_NAME: Correlative_Data_Class FIELD_MNEMONIC: CORRDAT FIELD_SYNTAX: ASCII Character*8 String. FIELD_RANGE: NMC FIELD_DESCRIPTION: The source of data contained in the file. FIELD_REPRESENTATION: 8A FIELD_DISPLAY_FORMAT: A8 1.10 Instrument_Type -------------------- FIELD_NAME: Instrument_Type FIELD_MNEMONIC: INSTYP FIELD_SYNTAX: ASCII Character*12 String. FIELD_DESCRIPTION: The instrument used to provide the data. Field is blank - not used. FIELD_REPRESENTATION: 12A FIELD_DISPLAY_FORMAT: A12 1.11 Observing_Station_Id ------------------------- FIELD_NAME: Observing_Station_Id FIELD_MNEMONIC: OBSSTN FIELD_SYNTAX: ASCII Character*12 String. FIELD_DESCRIPTION: The id of the observing station used to provide the data. Field is blank - not used. FIELD_REPRESENTATION: 12A FIELD_DISPLAY_FORMAT: A12 1.12 Correlative_Data_File_Type_Id ---------------------------------- FIELD_NAME: Correlative_Data_File_Type_id FIELD_MNEMONIC: FILEID FIELD_SYNTAX: ASCII Character*12 String. FIELD_RANGE: TEMPERATURE, HEIGHT, WINDS, MOISTURE FIELD_DESCRIPTION: An identifier indicating the type of data contained in this correlative file. FIELD_REPRESENTATION: 12A (left justified) FIELD_DISPLAY_FORMAT: A12 1.13 Start_Time_of_File ----------------------- FIELD_NAME: Start_Time_of_File FIELD_MNEMONIC: TIME_VALUE FIELD_SYNTAX: ASCII Character*23 String. FIELD_DESCRIPTION: The start time of the data in the file in standard VAX VMS date and time format. FIELD_REPRESENTATION: 23A FIELD_DISPLAY_FORMAT: A23 1.14 Stop_Time_of_File ---------------------- FIELD_NAME: Stop_Time_of_File FIELD_MNEMONIC: GSTOP FIELD_SYNTAX: ASCII Character*23 String. FIELD_DESCRIPTION: The stop time of the data in the file in standard VAX VMS date and time format. FIELD_REPRESENTATION: 23A FIELD_DISPLAY_FORMAT: A23 1.15 Maximum_Latitude --------------------- FIELD_NAME: Maximum_Latitude FIELD_MNEMONIC: MAXLAT FIELD_SYNTAX: ASCII Character*7 String. FIELD_UNITS: Degrees. FIELD_RANGE: +90.0 normally FIELD_DESCRIPTION: The maximum latitude of the data in the file. FIELD_REPRESENTATION: 7A (right justified - leading sign not included if value is positive) FIELD_DISPLAY_FORMAT: A7 1.16 Minimum_Latitude --------------------- FIELD_NAME: Minimum_Latitude FIELD_MNEMONIC: MINLAT FIELD_SYNTAX: ASCII Character*7 String. FIELD_UNITS: Degrees. FIELD_RANGE: -90.0 normally FIELD_DESCRIPTION: The minimum latitude of the data in the file. FIELD_REPRESENTATION: 7A (right justified) FIELD_DISPLAY_FORMAT: A7 1.17 Maximum_Longitude --------------------- FIELD_NAME: Maximum_Longitude FIELD_MNEMONIC: MAXLON FIELD_SYNTAX: ASCII Character*7 String. FIELD_UNITS: Degrees. FIELD_RANGE: +180.0 normally FIELD_DESCRIPTION: The maximum longitude of the data in the file. FIELD_REPRESENTATION: 7A (right justified - leading sign not included if value is positive) FIELD_DISPLAY_FORMAT: A7 1.18 Minimum_Longitude --------------------- FIELD_NAME: Minimum_Longitude FIELD_MNEMONIC: MINLON FIELD_SYNTAX: ASCII Character*7 String. FIELD_UNITS: Degrees. FIELD_RANGE: -180.0 normally FIELD_DESCRIPTION: The minimum longitude of the data in the file. FIELD_REPRESENTATION: 7A (right justified) FIELD_DISPLAY_FORMAT: A7 1.19 Maximum_Altitude_Kilometers -------------------------------- FIELD_NAME: Maximum_Altitude_Kilometers FIELD_MNEMONIC: MAXALTK FIELD_SYNTAX: ASCII Character*8 String. FIELD_UNITS: Kilometers. FIELD_DESCRIPTION: The maximum altitude of the data in the file. Field is blank. FIELD_REPRESENTATION: 8A FIELD_DISPLAY_FORMAT: A8 1.20 Minimum_Altitude_Kilometers -------------------------------- FIELD_NAME: Minimum_Altitude_Kilometers FIELD_MNEMONIC: MINALTK FIELD_SYNTAX: ASCII Character*8 String. FIELD_UNITS: Kilometers. FIELD_DESCRIPTION: The minimum altitude of the data in the file. Field is blank. FIELD_REPRESENTATION: 8A FIELD_DISPLAY_FORMAT: A8 1.21 Maximum_Altitude_Millibars -------------------------------- FIELD_NAME: Maximum_Altitude_Millibars FIELD_MNEMONIC: MAXALTP FIELD_SYNTAX: ASCII Character*8 String. FIELD_UNITS: Mb. FIELD_RANGE: 0.4 to 1000.0 FIELD_DESCRIPTION: The maximum altitude of the data in the file. FIELD_REPRESENTATION: 8A (right justified) FIELD_DISPLAY_FORMAT: A8 1.22 Minimum_Altitude_Millibars -------------------------------- FIELD_NAME: Minimum_Altitude_Millibars FIELD_MNEMONIC: MINALTP FIELD_SYNTAX: ASCII Character*8 String. FIELD_UNITS: Mb. FIELD_RANGE: 0.4 to 1000.0 FIELD_DESCRIPTION: The minimum altitude of the data in the file. FIELD_REPRESENTATION: 8A (right justified) FIELD_DISPLAY_FORMAT: A8 1.23 Record_Size ---------------- FIELD_NAME: Record_Size FIELD_MNEMONIC: RECFM FIELD_SYNTAX: ASCII Character*6 String. FIELD_UNITS: Bytes FIELD_RANGE: positive integers (16964 Bytes) FIELD_DESCRIPTION: The size of each record in the file. FIELD_REPRESENTATION: 6A (right justified) FIELD_DISPLAY_FORMAT: A6 1.24 Number_Records_in_File --------------------------- FIELD_NAME: Number_Records_in_File FIELD_MNEMONIC: NUMRECT FIELD_SYNTAX: ASCII Character*6 String. FIELD_RANGE: positive integers FIELD_DESCRIPTION: The total number of records in the file. HEIGHT (max#rec 37) TEMP (max#rec 37) MOISTURE (current#rec 7, max#rec 37) WINDS (current#rec 33, max#rec 37) FIELD_REPRESENTATION: 6A (right justified) FIELD_DISPLAY_FORMAT: A6 1.25 Data_Quality_Word#1 ------------------------ FIELD_NAME: Data_Quality_Word#1 FIELD_MNEMONIC: USRQ11 FIELD_SYNTAX: ASCII Character*3 String. FIELD_DESCRIPTION: A number giving an indication of the quality of the data. (Not used) FIELD_REPRESENTATION: 3A (right justified) FIELD_DISPLAY_FORMAT: A3 FIELD_FILLED_CODE: Blanks 1.26 Data_Quality_Word#2 ------------------------ FIELD_NAME: Data_Quality_Word#2 FIELD_MNEMONIC: USRQ12 FIELD_SYNTAX: ASCII Character*3 String. FIELD_DESCRIPTION: A number giving more indication of the quality of the data. (Not used) FIELD_REPRESENTATION: 3A (right justified) FIELD_DISPLAY_FORMAT: A3 FIELD_FILLED_CODE: Blanks 1.27 User_Comments ------------------ FIELD_NAME: User_Comments FIELD_MNEMONIC: USERCOM FIELD_SYNTAX: ASCII Character*80 String. FIELD_DESCRIPTION: Comments supplied by the UARS PI on the data. FIELD_REPRESENTATION: 80A FIELD_DISPLAY_FORMAT: A80 FIELD_FILLED_CODE: Blanks 1.28 Correlative_Data_Parameter#1 --------------------------------- FIELD_NAME: Correlative_Data_Parameter#1 FIELD_MNEMONIC: CORRDAT1 FIELD_SYNTAX: ASCII Character*12 String. FIELD_DESCRIPTION: The subtype of the first parameter. Acceptable subtypes: TEMP, MOISTURE, HEIGHT and WINDS FIELD_REPRESENTATION: 12A (left justified) FIELD_DISPLAY_FORMAT: A12 FIELD_FILLED_CODE: Blanks 1.29 Correlative_Data_Parameter#2 --------------------------------- FIELD_NAME: Correlative_Data_Parameter#2 FIELD_MNEMONIC: CORRDAT2 FIELD_SYNTAX: ASCII Character*12 String. FIELD_DESCRIPTION: The subtype of the second parameter. FIELD_REPRESENTATION: 12A (left justified) FIELD_DISPLAY_FORMAT: A12 FIELD_FILLED_CODE: Blanks 1.30 Correlative_Data_Parameter#3 --------------------------------- FIELD_NAME: Correlative_Data_Parameter#3 FIELD_MNEMONIC: CORRDAT3 FIELD_SYNTAX: ASCII Character*12 String. FIELD_DESCRIPTION: The subtype of the third parameter. FIELD_REPRESENTATION: 12A (left justified) FIELD_DISPLAY_FORMAT: A12 FIELD_FILLED_CODE: Blanks 1.31 Correlative_Data_Parameter#4 --------------------------------- FIELD_NAME: Correlative_Data_Parameter#4 FIELD_MNEMONIC: CORRDAT4 FIELD_SYNTAX: ASCII Character*12 String. FIELD_DESCRIPTION: The subtype of the fourth parameter. FIELD_REPRESENTATION: 12A (left justified) FIELD_DISPLAY_FORMAT: A12 FIELD_FILLED_CODE: Blanks 1.32 Record_Fill ---------------- FIELD_NAME: Record_Fill FIELD_MNEMONIC: Remaining fields in the SFDU record are not used by NMC routines for the NMC gridded data. FIELD_SYNTAX: ASCII Character String. Its length = Value(Record_Size) - 428 bytes. FIELD_DESCRIPTION: A field of blanks used to fill out the SFDU_Label_ And_UARS_Header_Record so that its length equals the length of the other records in the file. (All records in a UARS correlative file must be of the same length). 2. Data_Record -------------- Number of Record (= No_levels_for_each_Correlative_Parameter for Northern and Southern hemisphere) in the files. RECORD_NAME: Data_Record RECORD_STRUCTURE: Fixed length RECORD_LENGTH: 16964 bytes RECORD_FIELD_NAMES: Data_Type, Surf_Type_1, Surf_Value_1 Surf_Type_2, Surf_Value_2, Year_Data, Month_Data, Day_Data, Hour_Data, Hemisphere, Time_Indicator, Extra_Byte, Grid_Point_Field RECORD_SYNTAX: 13 Fields #1: Data_Type #2: Surf_Type_1 #3: Surf_Value_1 #4: Surf_Type_2 #5: Surf_Value_2 #6: Year_Data #7: Month_Data #8: Day_Data #9: Hour_Data #10: Hemisphere #11: Time_Indicator #12: Extra_Byte #13: Grid_Point_Field 4.2) FIELDS =========== 2.1 Data_Type ------------- FIELD_NAME: Data_Type FIELD_MNEMONIC: IQ FIELD_SYNTAX: Scalar FIELD_RANGE: 16 (Temp), 1 (Height), 88 (Moisture), 48(u)&49(v) (Winds) FIELD_DESCRIPTION: The type of data contained in this correlative file. FIELD_REPRESENTATION: I4 FIELD_DISPLAY_FORMAT: I4 FIELD_FILL_CODE: 0 2.2 Surf_Type_1 --------------- FIELD_NAME: Surf_Type_1 FIELD_MNEMONIC: IS1 FIELD_SYNTAX: Scalar FIELD_RANGE: 8 (NMC code number to indicate Constant pressure Surface) FIELD_DESCRIPTION: Constant pressure surface FIELD_REPRESENTATION: I4 FIELD_DISPLAY_FORMAT: I4 FIELD_FILL_CODE: 0 2.3 Surf_Value_1 ---------------- FIELD_NAME: Surf_Value_1 FIELD_MNEMONIC: PRES1 FIELD_SYNTAX: Scalar FIELD_RANGE: 0.4 - 1000.0 mb FIELD_DESCRIPTION: Values for the pressure levels FIELD_REPRESENTATION: R4 FIELD_DISPLAY_FORMAT: R4 FIELD_FILL_CODE: 0 2.4 Surf_Type_2 --------------- FIELD_NAME: Surf_Type_2 FIELD_MNEMONIC: IS2 FIELD_SYNTAX: Scalar FIELD_RANGE: 0 FIELD_DESCRIPTION: Unused. FIELD_REPRESENTATION: I4 FIELD_DISPLAY_FORMAT: I4 FIELD_FILL_CODE: 0 2.5 Surf_Value_2 ---------------- FIELD_NAME: Surf_Value_2 FIELD_MNEMONIC: PRES2 FIELD_SYNTAX: Scalar FIELD_RANGE: 0.0 FIELD_DESCRIPTION: Unused. FIELD_REPRESENTATION: R4 FIELD_DISPLAY_FORMAT: R4 FIELD_FILL_CODE: 0 2.6 Year_Data ------------- FIELD_NAME: Year_Data FIELD_MNEMONIC: IYR FIELD_SYNTAX: Scalar FIELD_RANGE: 1990+ FIELD_DESCRIPTION: Year of the latest data FIELD_REPRESENTATION: I4 FIELD_DISPLAY_FORMAT: I4 FIELD_FILL_CODE: 0 2.7 Month_Data ------------- FIELD_NAME: Month_Data FIELD_MNEMONIC: IMN FIELD_SYNTAX: Scalar FIELD_RANGE: 1 to 12 FIELD_DESCRIPTION: Month of year of the latest data FIELD_REPRESENTATION: I4 FIELD_DISPLAY_FORMAT: I4 FIELD_FILL_CODE: 0 2.8 Day_Data ------------ FIELD_NAME: Day_Data FIELD_MNEMONIC: IDY FIELD_SYNTAX: Scalar FIELD_RANGE: 1 to 31 FIELD_DESCRIPTION: Day of month of latest data FIELD_REPRESENTATION: I4 FIELD_DISPLAY_FORMAT: I4 FIELD_FILL_CODE: 0 2.9 Hour_Data ------------- FIELD_NAME: Hour_Data FIELD_MNEMONIC: IHR FIELD_SYNTAX: Scalar FIELD_RANGE: 0 to 23 FIELD_DESCRIPTION: Hour of day of latest data FIELD_REPRESENTATION: I4 FIELD_DISPLAY_FORMAT: I4 FIELD_FILL_CODE: 0 2.10 Hemisphere --------------- FIELD_NAME: Hemisphere FIELD_MNEMONIC: IHEM FIELD_SYNTAX: Scalar FIELD_RANGE: 27 (Northern) & 28 (Southern) FIELD_DESCRIPTION: Indicates the hemisphere or area type for which the data is valid. FIELD_REPRESENTATION: I4 FIELD_DISPLAY_FORMAT: I4 FIELD_FILL_CODE: 0 2.11 Time_Indicator ------------------- FIELD_NAME: Time_Indicator FIELD_MNEMONIC: Time_Value FIELD_SYNTAX: Scalar FIELD_DESCRIPTION: The processing time of the data in the file, standard VAX VMS date and time format. FIELD_REPRESENTATION: ASCII Character*23 String. FIELD_DISPLAY_FORMAT: 23A FIELD_FILL_CODE: 0 2.12 Extra_Byte --------------- FIELD_NAME: Extra_Byte FIELD_MNEMONIC: Onebyte FIELD_SYNTAX: 1 byte FIELD_DESCRIPTION: Extra byte to fill the record to its fixed length FIELD_REPRESENTATION: 1A FIELD_DISPLAY_FORMAT: A FIELD_FILL_CODE: 0 2.13 Grid_Field_Data -------------------- FIELD_NAME: Grid_Point_Field FIELD_MNEMONIC: RECT FIELD_SYNTAX: Array of Number_of_rows by Number_of_points elements FIELD_RANGE: 4225-points FIELD_DESCRIPTION: 4225-point (65x65) Northern and Southern Hemisphere polar stereographic grid. 381km at 60N and 60S. FIELD_REPRESENTATION: R4 FIELD_FILL_CODE: 0