gov.noaa.ncdc:C00359 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Unknown tabular digital data http://www.ncdc.noaa.gov http://www4.ncdc.noaa.gov/ol/documentlibrary/datasets.html#TD3211 http DSI-3211 Documentation NCDC Dataset Documentation for DSI-3211 information Summary of the Day - First Order ASOS is digital data set DSI-3211, archived at the National Climatic Data Center (NCDC). ASOS is the Automated Surface Observing System, which is the primary weather observing network in the U.S. Data is from major stations (called first order stations) such as airports and military bases in the U.S. and its possessions and associated nations in the Caribbean and Pacific Ocean. Data in DSI-3211 are available since January 2000 and include: Air pressure Average daily sea level pressure Average daily station pressure Air temperature Average daily dew point temperature Average daily wet-bulb temperature Average temperature Daily maximum temperature Daily minimum temperature Temperature departure from normal Days with weather Daily occurrence of weather Day with weather in the vicinity Degree days Cooling degree days Heating degree days Precipitation Daily precipitation Daily snowfall Relative humidity Maximum relative humidity Minimum relative humidity Snow depth Snowdepth at observation time Water equivalent of snow on the ground Sunshine Daily percent of possible sunshine Daily total sunshine Winds Average daily wind speed Fastest 2-minute wind direction and speed Fastest 5-second wind direction and speed Resultant wind direction Resultant wind speed Time of fastest 2-minute wind.In September 1992, the NWS began implementation of the Automated Surface Observing System (ASOS) with four sites. Implementation continues with total ASOS stations nearing 2000 in 2005. This data set begins with the October 2000 data, following the same conventions as DSI-3210. However, the quality control practices are different. The only quality control in this data set is performed automatically. Users are suggested use DSI-3210 since this data set is considered to be raw. It must be noted that NCDC has the observations from the time the station opened, but the NWS has the current data. Official surface weather observation standards can be found in the Federal Meteorological Handbook. To make a wide range of climatic data available to researchers and the public. data set C00359 AEROVANES ANEMOMETERS BAROMETERS HUMIDITY SENSORS HYGROMETERS PRESSURE SENSORS RAIN GAUGES SNOW MEASURING ROD SUNSHINE RECORDERS TEMPERATURE LOGGERS TEMPERATURE SENSORS THERMOMETERS VISUAL OBSERVATIONS WIND VANES ASOS > Automated Surface Observing System National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce http://www4.ncdc.noaa.gov/ol/documentlibrary/datasets.html#TD3211 20000101 Present Ground Condition In work As Needed 130.0 -60.0 72.0 -15.0 ISO 19115 Topic Category climatologyMeteorologyAtmosphere 004 elevation 006 DIF Discipline Keyword Thesaurus Earth Sciences > Atmosphere > Meteorology Earth Sciences > Atmosphere > Climatology Earth Sciences > Atmosphere > Weather Earth Sciences > Land > Hydrology GCMD Sciences Keyword Valids EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > MAXIMUM/MINIMUM TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE AIR TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SUNSHINE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > STORMS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > TORNADOS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > FOG EARTH SCIENCE > ATMOSPHERE > AEROSOLS > DUST/ASH/SMOKE EARTH SCIENCE > ATMOSPHERE > ALTITUDE > STATION HEIGHT EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > FREEZING RAIN EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > HAIL EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID WATER EQUIVALENT EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > RAIN EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > SLEET EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > SNOW EARTH SCIENCE > HYDROSPHERE > SNOW/ICE > SNOW DEPTH EARTH SCIENCE > HYDROSPHERE > SNOW/ICE > SNOW WATER EQUIVALENT EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE RTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SURFACE PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > DEGREE DAYS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > TEMPERATURE ANOMALIES EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > DEW POINT TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS GCMD Location Valids UNITED STATES OF AMERICA PUERTO RICO VIRGIN ISLANDS GUAM AMERICAN SAMOA MARSHALL ISLANDS MICRONESIA PALAU GCMD Location Valids LAND SURFACE TROPOSPHERE Automated Surface Observing System ASOS HYGROMETERS Automated Surface Observing System ASOS HUMIDITY SENSORS Automated Surface Observing System ASOS THERMOMETERS Automated Surface Observing System ASOS TEMPERATURE SENSORS Automated Surface Observing System ASOS TEMPERATURE LOGGERS Automated Surface Observing System ASOS RAIN GAUGES Automated Surface Observing System ASOS SNOW MEASURING ROD Automated Surface Observing System ASOS SUNSHINE RECORDERS Automated Surface Observing System ASOS PRESSURE SENSORS Automated Surface Observing System ASOS WIND VANES Automated Surface Observing System ASOS ANEMOMETERS Automated Surface Observing System ASOS AEROVANES Automated Surface Observing System ASOS BAROMETERS Automated Surface Observing System ASOS VISUAL OBSERVATIONS 1 None None Not provided Unknown Completeness information not available. Not derived from another source. Unknown Positions 1-3 RECORD TYPE: The type of data stored in this record. (Value is "DLY"). Each record contains one month of daily values.Positions 4-11 STATION-ID: This eight-digit numeric identifier (WBAN STATION NUMBER) is assigned by the National Climatic Data Center. The first 3 digits are zero's. WBAN NUMBER is a 5 digit number formulated to designate the station. A list of stations with their coordinates, elevation and period of record is available upon request. Values range from 00000001 through 00099999.Positions 12-15 METEOROLOGICAL ELEMENT-TYPE:The type of meteorological elements stored in this record. The range of values are listed below.AWNDAverage Daily Wind Speed. Units expressed in miles per hour to tenths.CLDGCooling Degree Day. Base 65 degrees Fahrenheit.DPNTDeparture from Normal Temperature. DATA-VALUE = -00099 to b00099 degrees Fahrenheit. DPTPAverage Daily Dew-Point Temperature. Units expressed in tenths of degrees Fahrenheit.DYSWDaily Occurrence of WEATHER. These two digit DYSW element codes are stored in the rightmost four digits of the VALUE portion of the DATA-VALUE field. Within the four digits used, the weather codes are entered left justified. Thus, if one type of weather occurs during a day the VALUE field would appear as OXXOO where XX is the appropriate weather code. If two types of weather occur the VALUE field will contain OXXYY where XX is value 1 and YY is value 2. If more than 2 types of weather occur on the same day, they will be stored in additional DYSW records as needed. (Reference Table "A1")DYVCDay with Weather in the Vicinity. The present (or prevailing) weather occurring at the time of the observation in the vicinity of the station, between 5 and 10 statute miles of the point of observation. NOTE: This element is coded in the same manner as the element DYSW. See the description for DYSW for details. (Reference Table "A1")F2MNFastest 2-minute Wind Direction and Speed. Direction is expressed in tens of degree from true north. Speed is expressed in miles per hour. When two or more equal speeds have occurred, the most recent speed and direction are entered.Example of DATA-VALUE field XXYYY for wind direction and speed: 22048. Wind is from 220 degrees at 48 miles per hour.F5SCFastest 5-second Wind Direction and Speed. Direction is expressed in tens of degrees from true north. Speed is expressed in miles per hour. When two or more equal speeds have occurred, the most recent speed and direction are entered.FMTMTime of Fastest 2-minute Wind. Units are expressed in hours and minutes. HTDGHeating Degree Days. Base 65 whole degrees Fahrenheit.MNRH Minimum Relative Humidity. DATA-VALUE = b00000 to b00100, expressed in whole percent.MNTPAverage Temperature. The value is the (Max Temp. + Min Temp.)/2, expressed in whole degrees Fahrenheit.MXRHMaximum Relative Humidity. DATA-VALUE = b00000 to b00100, expressed in whole percent. PRCPDaily Precipitation. Rainfall and melted frozen precipitation are included. Trace is less than .005 inch. DATA-VALUE = b00000 to b09999 expressed in hundredths of inches. PRESAverage Daily Station Pressure. Based on eight 3-hourly observations per day. Units expressed in thousandths of inches of Mercury.PSUNDaily Percent of Possible Sunshine. Data Value = b00000 to b00100, expressed in percent.RDIRResultant Wind Direction. DATA-VALUE expressed to the nearest whole degree code.RWNDResultant Wind Speed. DATA-VALUE is expressed in miles per hour to tenths.SLVPAverage Daily Sea Level Pressure. DATA-VALUE expressed in tenths of millibars.SNOWDaily Snowfall. Hail is included with snowfall. Amount includes sleet/ice pellets. DATA-VALUE = b00000 to b09999 expressed in tenths of inches. Trace of snow is less than .05 inch.SNWDSnowdepth at Observation Time. Hail is included with snowfall. (Reference Table "E") TMAX Daily Maximum Temperature. DATA-VALUE = -00199 to b00199, expressed in whole degrees Fahrenheit. TMIN Daily Minimum Temperature. DATA-VALUE = -00199 to b00199, expressed in whole degrees Fahrenheit. TMPWAverage Daily Wet-Bulb Temperature. DATA-VALUE = -00199 to b00199, expressed in whole degrees Fahrenheit.TSUNDaily Total Sunshine. DATA-VALUE = b00000 to b01440, expressed in minutes. (Reference Table "F")WTEQWater Equivalent of Snow on the Ground. Reported only when there are 2 inches or more of snow on the ground. Readings were generally taken at 1800 GMT. Positions 16-17 METEOROLOGICAL ELEMENT MEASUREMENT UNITS CODE:(Reference Table "A")Positions 18-21 YEAR: This is the year of the record. Range of values - 2000 to current year processed.Positions 22-23 MONTH: This is the month of the record. Range of values is 01-12.Positions 24 SOURCE CODE 1:Contains a code indicating the primary source of the original record for this element. Range is 1-9 and A -Z. (Reference Table "G")Positions 25 SOURCE CODE 2: Contains a code indicating the backup source of the original record for this element. Range is 1-9 and A - Z. (Reference Table "H")Positions 26-27 Reserved for Future Use ('99').Positions 28-30 NUM-VALUESThis notates the actual number of values reported. Range = 001 to 062.NOTE: A record may contain fewer data values than you might expect. A monthly record of daily values may contain as few as 1 data value or as many as 31 data values.If a particular data value was not taken or is unavailable there is no entry for it.All positions after 30 are the data section. Each data value is a block consisting of 12 characters. Positions 31-42, which comprise the first 12-character data value block, are described below. The same description applies to all blocks.Positions 31-32 DAY OF MONTH: Contains the day of the month on which the data element was observed. Range of values is 01-31 LST.Positions 33-34 HOUR OF OBSERVATION: Contains the hour of the daily observation. Hour of observation is reported using the 24-hour clock with values ranging from 00-23 LST, except in the cases of soil temperatures element-type (where the hour is 99 to indicate missing) and "days with weather" (where the hour is 24). Through June 1967 observations were designated as "AM" or "PM"; these values were set to 06 or 18 respectively during the conversion to DSI-3200. From July 1967 through 1981, all observations were set to hour 18 (because the majority are p.m. observations). Beginning January 1982, the actual hour of the observation is indicatedPosition 35 SIGN OF METEOROLOGICAL VALUE:The algebraic sign of the meteorological data value is given as either a blank or a minus sign (-). Blank indicates a positive value and a minus sign represents a negative value (see Known Uncorrected Problems").Positions 36-40 VALUE OF METEOROLOGICAL ELEMENT:The actual data value is given as a five-digit integer. One major exception does exist however, for the DYSW (days with weather code) element-type values. A very small number of data values are known to have non-numeric entries.Position 41 FLAG1:The Data Measurement FLAG (reference Table "J").Position 42 FLAG2:The Data Quality FLAG (reference Table "K").TABLES ******** TABLE "A" ******** METEOROLOGICAL ELEMENT MEASUREMENT UNITS CODEThe units and decimal position of the data value for this record. Range of values is listed below. C Whole degrees Celsius CM Centimeters D Whole Fahrenheit degree days DT Wind direction in tens of degrees DW Wind direction in whole degrees F Whole degrees Fahrenheit FN Feet and tenths FT Whole feet HF Hundreds of feet HI Hundredths of inches HM Hundredths of miles HR Time in hours and minutes HT Hundredths of inches but observation was only made to tenths I Whole inches IH Hundredths of inches of mercury IT Thousandths of inches of mercury KD Knots and direction in tens of degrees KS Knots and direction in 16 pt. code M Whole miles MD MPH and direction in tens of degrees ME Whole meters MH Miles per hour MM Millimeters MN Minutes MS MPH and direction in 16 pt. code MT Tenths of millibars NA No units applicable (none-dimensional) N1 No units applicable - element to tenths N2 No units applicable - element to hundredths OS Oktas of sky cover P Whole percent TC Tenths of degree Celsius TD Tenths of Fahrenheit degree days TF Tenths of degrees Fahrenheit TH Tenths of hours TI Tenths of inches TK Tenths of knots TL Tenths of miles per hour TM Tenths of millimeters TP Tenths of percent TS Tenths of sky coverNote: All single digit Element-Units are left justified and blank filled.******** TABLE "A1" ********DYSW/DYVC00 No occurrence01 Day with haze (see code 30 in this table)02 Day with fog (see code 17 in this table)03 Day with heavy fog04 Day with drizzle05 Day with ice pellets (sleet and small hail; see code 31 in this table)06 Day with glaze07 Day with thunder08 Day with hail (1/4 inch or larger in diameter)09 Day with volcanic ash ( see codes 27 and 29 in this table)10 Day with blowing snow (includes drifting snow)11 Day with high wind (squall; speeds increasing to at least 16kts/18mph and sustained at 22kts/25mph or more for at least one minute;)12 Day with tornado (see codes 20 and 21 in this table)13 Day with snow (see codes 22, 23, 24 in this table)14 Day with rain15 Day with freezing rain16 Day with freezing drizzle17 Day with ice fog ( includes freezing fog)18 Day with blowing spray (includes spray)19 Day with unknown source of precipitation20 Day with funnel cloud21 Day with waterspout ( includes tornado)22 Day with snow pellets (see code 31 in this table)23 Day with snow grains24 Day with ice crystals25 Day with ground fog26 Day with dust27 Day with blowing dust (includes duststorm when visibility is reduced to less than 5/8 miles)28 Day with blowing obstruction29 Day with blowing sand (also includes sand as well as sandstorm when visibility is reduced to less than 5/8 mile30 Day with smoke31 Day with small hail and/or snow pellets (diameter less than 1/4 inch)32 Day with well developed dust/sand whirls33 Day with mist34 Day with rain or snow shower; used in reference to weather in the vicinity only******** TABLE "B1" ********FSIN WIND DIRECTION CODE (16 Point WBAN Code) 12 = NNE 66 = SW 22 = NE 76 = WSW 32 = ENE 77 = W 33 = E 78 = WNW 34 = ESE 88 = NW 44 = SE 18 = NNW 54 = SSE 11 = N 55 = S 00 = Calm 56 = SSW = UnknownExample of DATA-VALUE field XXYYY for wind direction and speeds: 12037 Wind is from the NNE at 37 miles per hour.******** TABLE "B2" *******PKGS WIND DIRECTION CODE (36 Point WBAN Code) 03 = NNE 21 = SSW 05 = NE 24 = SW 07 = ENE 25 = WSW 09 = E 27 = W 12 = ESE 30 = WNW 14 = SE 32 = NW 16 = SSE 34 = NNW 18 = S 36 = N ******** TABLE "C" ********FSMI and FSMNWIND DIRECTION CODES 00 = Calm 01 = 010 02 = 020 " " " through " 36 = 360 99 = Unknown******** TABLE "E" ******** SNWDDEPTH of SNOW OBSERVED AT: 12:00 GMTDATA-VALUE = b00000 to b09999 in whole inches. Trace of snow depth is less than 0.5 inches. Some Alaska and part-time stations take snow depth measurements at different hours.******** TABLE "F" ******** TSUN Conversion of minutes to tenths of hours is: MIN TENTHS 1-2 0.0 33-38 0.6 3-8 0.1 39-44 0.7 9-14 0.2 45-50 0.8 15-20 0.3 51-56 0.9 21-26 0.4 57-60 1.0 27-32 0.5 A ASOS******** TABLE "G" ******** SOURCE CODE TABLE 11 - Original ManuscriptA - ASOSSource codes reflect normally expected sources and do not necessarily indicate actual source of a specific item.******** TABLE "H" ********SOURCE CODE TABLE 21 - Original ManuscriptA - ASOS ******** TABLE "J" ********FLAG1 TABLEA - Accumulated amount. This value is the amount accumulated since the last measurement. (SNOW, SNWD, PRCP)B - Accumulated Amount. Value includes estimated values. (SNOW, SNWD, PRCP)D - Derived Value.E - Estimated Value.M - Data Element Missing. This is for fixed length records only. S - Included in a Subsequent Value. This precipitation amount is being accumulated. Total will be included in a subsequent value. (TPCP, SNOW, SNWD)T - Trace of Precipitation, Snowfall or Snow depth. Value would be '00000'. (TPCP, SNOW, SNWD)b - (blank) Not needed.******** TABLE "K" ********FLAG2 TABLEO - Observed data has passed all internal consistency checks1 - Validity indeterminable2 - Observed data has failed an internal consistency check - (subsequent edited value follows observed value)3 - Observed data has failed an internal consistency check.4 - Observed data value invalid.D - Wind direction code is invalid (PKGS through December 1983 only)E - Edited data value passes all systems checks - no observed value presentS - Manually edited value passes all systems checks None National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Customer Services Branch Mailing and physical

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