gov.noaa.ncdc:C00216 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Unknown tabular digital data http://www.ncdc.noaa.gov Summary Observations is historical digital data set DSI-3290, archived at the National Climatic Data Center (NCDC). Summary Observations is sometimes called 6 hourly data. DSI-3290 data were collected primarily at major airports and military bases by trained personnel or automated equipment that had been tested by the controlling agency. The controlling agencies were the National Weather Service (NWS), the Federal Aviation Administration (FAA), the US Air Force, and the US Navy. The NWS and FAA sites are located in the US, Puerto Rico, the Pacific islands of Guam and American Samoa, and the Pacific Ocean nations of Palau, Marshall Islands, and Micronesia. This Summary Observation data set contains surface synoptic data from the NWS Form MF1-10B and the forms that have replaced them. DSI-3290 has the following major parameters: Maximum and minimum temperatures, precipitation, snow, and snow depth. For a station outside the US, DSI-3290 data has four data values per day for each parameter. Data values are for 0000, 0600, 1200, and 1800 Greenwich Mean Time (GMT). Each data value represents a parameter value for the 6-hour interval since the previous time (hence, "6-hourly"). Times actually given are 15 minutes earlier (e.g. 0000 is 2345, 0600 is 0545, 1200 is 1145, and 1800 is 1745). For a station inside the US, there are generally six data values per parameter per day. Times are given in local standard time (LST). The purpose of using LST and having two extra data values is to "align" the GMT day with the local day. The second through fifth data values correspond to the four data values of a non-US station; but the times are expressed as the LST equivalent of each GMT. Minutes are always 45, as with a non-US station. The first and sixth data values are the "alignment" values: The first data value has the same time as the second data value, but the first value represents the parameter between local midnight and the given time, instead of a 6-hourly interval. The sixth data value has a time of 2400, and represents the parameter for the time interval between the previous data value and local midnight, instead of a 6-hourly interval. To make a wide range of climatic data available to researchers and the public. data set C00216 AWS > AUTOMATED WEATHER SYSTEM PSYCHROMETERS RAIN GAUGES SNOW MEASURING ROD THERMOMETERS ARWS > Automatic Remote Weather Station WEATHER STATIONS National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce 19890709 Present Ground Condition In work As Needed 130.0 -60.0 72.0 -15.0 ISO 19115 Topic Category climatologyMeteorologyAtmosphere 004 DIF Discipline Keyword Thesaurus Earth Sciences > Atmosphere > Meteorology Earth Sciences > Atmosphere > Weather Earth Sciences > Atmosphere > Climatology Earth Sciences > Land > Hydrology GCMD Sciences Keyword Valids EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > MAXIMUM/MINIMUM TEMPERATURE EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > SNOW EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW DEPTH EARTH SCIENCE > HYDROSPHERE > SNOW/ICE > SNOW DEPTH GCMD Location Valids NORTH AMERICA UNITED STATES OF AMERICA GUAM AMERICAN SAMOA MARSHALL ISLANDS MICRONESIA PALAU GCMD Location Valids LAND SURFACE TROPOSPHERE Automatic Remote Weather Station ARWS AUTOMATED WEATHER SYSTEM AWS WEATHER STATIONS RAIN GAUGES WEATHER STATIONS SNOW MEASURING ROD WEATHER STATIONS PSYCHROMETERS WEATHER STATIONS THERMOMETERS 1 None None Not provided Unknown Completeness information not available. Derived from data recorded on National Weather Service Form MF1-10B and later forms that replaced it. Unknown Each logical record contains one station's six hourly data values for a specific meteorological element for a period of one day. The record consists of an identification portion, and a data portion. The identification portion identifies the record type, observing station, element type, element units, year/month, source codes, day, and number of values. The data portion contains the meteorological observation for the six hourly data values and quality flags. The data portion is repeated for as many six hourly values as occur in a day (as few as one as many as 12, due to missing or edited values).Positions 1-3: RECORD TYPEThe type of data stored in this record. Value is "SMY". Each record containson day of six hourly values.Positions 4-11: STATION-IDContains the WBAN Station Number. (Assigned by NCDC.) ID range of the values = 00000000-00099999. Five digit station numbers are always right justified and zero filled.Positions 12-15: METEOROLOGICAL ELEMENT-TYPEThe type of meteorological events stored in this record. Range of values are listed below.TMAXThe maximum six hourly temperature (SYNOPTIC PERIOD).DATA-VALUE = -00199 to b00199 Whole degrees F.TMINThe minimum six hourly temperature, (SYNOPTIC PERIOD).Data-Value = -00199 to b00199 whole degrees F.PRCPThe accumulated precipitation for the six hourly period.(SYNOPTIC PERIOD). Rainfall and melted precipitation are included. Trace is less than .005 inch. DATA-VALUE = b00000 to b09999 inches and hundredths. Check FLAG1 for Trace Indicator.SNOWThe snowfall amount for the six hourly (SYNOPTIC) period. DATA-VALUE = b00999 in inches and tenths. Trace of snow is less than .05 inch.Check FLAG1 for Trace Indicator. SNWDThe depth of snow observed on the six hourly (SYNOPTIC) period.DATA-VALUE = b00000 to b00999 in whole inches. Trace of snow depth is less than 0.5 inch. Check FLAG1 for TRACE Indicator.Positions 16-17: ELEMENTThe unit and decimal position of the DATA-VALUE for this record.ELEMENT-UNITS TABLEFb Whole degrees FahrenheitHI Hundredths of InchesTI Tenths of InchesIb Whole InchesPositions 18-21: YEARThis is the year of record. Range = 1984 through current year processed.Positions 22-23: MONTHThis is the month of record. Range = 01 - 12.Position 24: SOURCE CODE-1Contains a code indicating the primary source of the original record this element was taken from.Range is 1-9.SOURCE CODE TABLE1 Original Manuscript 2 SRRS3 AFOS4 DATSAV5 NMC 6 Foreign Keyed7 MAPSO8 SRRS plus9 Other/unknownA ASOSSource codes reflect normally expected data sources and do not necessarily indicate the actual source of a specific item. Position 25: SOURCE CODE-2Contains a code indicating the back-up source of the original record this element was taken from.Range is 1-9.SOURCE CODE TABLE1 Original Manuscript2 SRRS3 AFOS4 DATSAV5 NMC6 Foreign Keyed7 MAPSO8 SRRS 'A' side, manuscript 'B' side9 Other/unknown Positions 26-27: DAYContains the day of the record. Range 01-31.Positions 28-30: NUM-VALUESThis notates the actual number of values reported. Range of values is 001-012.NOTE: All positions after 30 are the data section. The number of data valuesin the data section is NUM-VALUES. Each data value is a block consisting of 12 characters. Positions 31-42, which comprise the first 12-character datavalue block, are described below. The same description applies to all blocks.A record may contain fewer or more data values might expect. A daily record or hourly value may contain as few as 1 data value or as many as 12. This is primarily due to missing or edited data. If a particular data value was not taken or is unavailable there is no entry for it. Also, when erroneous data are encountered during quality control the original values are flagged and are followed by replacement values (see FLAG-2 TABLE for details).Positions 31-34: TIME-OF VALUEContains the hour and minute of the hourly element value. Range is 0000-2400. In many cases there will be two occurrences for the same TIME-OF-VALUE. This is true because the first recording period is midnight to a given hour, where the second night to a given hour, where the second occurrence is the true six-hourly synoptic time. 2400 is the last synoptic time of the day. The hour is in the leftmost two digits and the minute is in the rightmost two digits. Hour is reported using the 24-hour clock. (Minutes are always 00.) Position 35: SIGN OF METEOROLOGICAL VALUEThis is the 'SIGN' of the meteorological data value. This field contains either a blank or a minus sign (never a plus sign).Positions 36-40: DATA-VALUEActual data value. This field is a five digit integer. Units and decimal position are indicated in the ELEMENT-UNITS field described in Tape Field 004.Position 41: FLAG-1The data measurement FLAG.FLAG-1 TABLE (Measurement Value)A Accumulated value through previously missing Observation period(s).D Derived valueE Estimated valueT Trace (data value = 00000)b (blank) Flag not necessary Position 42: FLAG-2The data quality FLAG.FLAG-2 TABLE (Quality Flag)0 Observed data has passed all internal consistency checks.1 Validity indeterminable 2 Observed data has failed an internal consistency check (subsequent edited value follows observed value)3 Observed data has failed a consistency check (Low level of confidence for observed value) 4 Observed data value invalid - no edited value follows E Edited data value passes all system checks - no observed value presentS Manually edited data passes all system checks 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 DSI-3290 Every effort has been made to ensure that these data are accurate and reliable within the limits of current NOAA quality control procedures. NOAA can only certify that the data provided to its customers is an authentic copy of the records which were accepted for inclusion in NOAA archives. 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. 20060627 20060627 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 Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002