TITLE: Mesonet Automated Surface Observing System (ASOS) 1-min Data [JOSS] CONTACTS: Steve Williams UCAR/JOSS P.O. Box 3000 Boulder, CO 80307-3000 phone: 303-497-8164 email: sfw@ucar.edu 1.0 DATA SET OVERVIEW This data set contains 1-minute resolution surface meteorological data from the Automated Surface Observing System (ASOS) stations located across the IHOP region. These data were retrieved via modem several times per day during the IHOP period (13 May to 25 June 2002). Each file contains 12 hours of data so some overlap between files is expected. The data are in ASCII format. 2.0 INSTRUMENT DESCRIPTION 2.1 Instrumentation information Information on the ASOS instrumentation can be found at the National Weather Service (NWS) ASOS web page at: http://205.156.54.206/asos/ or at the Federal Aviation Administration (FAA) automated weather sensors web site at: http://www.faa.gov/asos/asos.htm Also the following documents are included with your order: IHOP_ASOS_Ready_Ref_Guide.pdf IHOP_asos_users_guide.pdf IHOP_asos_users_guide_app.pdf 2.2 Station Locations These station locations are from NCDC. Elevations in meters. ID Station Location ST Latitude Longitude Elev ----------------------------------------------------------------------------------------- KAAO WICHITA COLONEL JAMES JABARA AIRPORT KS 37 44 59 N -97 13 8 W 430.4 FAA KAMA AMARILLO INTERNATIONAL AIRPORT TX 35 13 10 N -101 42 20 W 1093.0 NWS KBGD BORGER HUTCHINSON COUNTY AIRPORT TX 35 42 0 N -101 23 37 W 930.9 FAA KBVO BARTLESVILLE FRANK PHILLIPS OK 36 45 45 N -96 00 40 W 217.3 FAA KCAO CLAYTON MUNICIPAL AIRPORT NM 36 26 45 N -103 9 15 W 1511.8 NWS KCDS CHILDRESS MUNICIPAL AIRPORT TX 34 26 1 N -100 17 16 W 594.7 FAA KCFV COFFEYVILLE COFFEYVILLE MUNICIPAL AP KS 37 5 28 N -95 33 59 W 229.2 FAA KCNK CONCORDIA BLOSSER MUNICIPAL AIRPORT KS 39 32 57 N -97 39 7 W 447.8 NWS KCNU CHANUTE CHANUTE MARTIN JOHNSON KS 37 40 13 N -95 29 3 W 298.4 FAA KCSM CLINTON CLINTON-SHERMAN AIRPORT OK 35 20 23 N -99 12 1 W 598.3 FAA KDDC DODGE CITY DODGE CITY REGIONAL ARPT KS 37 46 22 N -99 58 11 W 787.0 NWS KDHT DALHART MUNICIPAL AIRPORT TX 36 1 24 N -102 32 50 W 1216.2 FAA KFDR FREDERICK FREDERICK MUNICIPAL AIRPT OK 34 21 8 N -98 59 3 W 386.2 FAA KFOE TOPEKA TOPEKA KS 38 57 1 N -95 39 50 W 325.2 FAA KGAG GAGE GAGE AIRPORT OK 36 17 48 N -99 46 29 W 667.8 FAA KGCK GARDEN CITY GARDEN CITY REGIONAL AP KS 37 55 38 N -100 43 29 W 878.4 FAA KGLD GOODLAND RENNER FIELD KS 39 22 3 N -101 41 35 W 1114.3 NWS KGOK GUTHRIE GUTHRIE MUNICIPAL AIRPORT OK 35 51 1 N -97 24 56 W 327.4 FAA KGUY GUYMON GUYMON MUNICIPAL AIRPORT OK 36 40 54 N -101 30 19 W 951.9 NWS KHLC HILL CITY HILL CITY MUNICIPAL AP KS 39 22 32 N -99 49 47 W 666.9 FAA KICT WICHITA MID-CONTINENT AIRPORT KS 37 38 50 N -97 25 46 W 402.6 NWS KIXD OLATHE JOHNSON COUNTY INDUSTRIAL KS 38 49 54 N -94 53 23 W 331.3 FAA KLAA LAMAR LAMAR MUNICIPAL CO 38 4 12 N -102 41 17 W 1129.0 FAA KLAW LAWTON LAWTON-FORT SILL REG AP OK 34 34 4 N -98 24 59 W 338.3 FAA KLHX LA JUNTA MUNICIPAL AIRPORT CO 38 3 5 N -103 31 37 W 1281.1 FAA KLWC LAWRENCE LAWRENCE MUNICIPAL AIRPORT KS 39 0 30 N -95 12 42 W 253.6 FAA KMHK MANHATTAN MANHATTAN MUNICIPAL AIRPORT KS 39 8 7 N -96 40 40 W 322.2 FAA KMKO MUSKOGEE DAVIS FIELD OK 35 39 24 N -95 21 41 W 185.9 FAA KMLC MCALESTER MUNICIPAL AIRPORT OK 34 53 56 N -95 47 0 W 234.7 FAA KOJC OLATHE OLATHE-JOHNSON CO EXE APT KS 38 51 0 N -94 44 21 W 326.1 FAA KPNC PONCA CITY PONCA CITY MUNICIPAL ARPT OK 36 43 50 N -97 5 59 W 304.5 FAA KPPF PARSONS TRI-CITY AIRPORT KS 37 19 40 N -95 30 15 W 264.9 FAA KPUB PUEBLO MEMORIAL AIRPORT CO 38 17 24 N -104 29 54 W 1427.7 NWS KPWA OKLAHOMA CITY WILEY POST AIRPORT OK 35 32 3 N -97 38 49 W 395.3 FAA KRSL RUSSELL MUNICIPAL AIRPORT KS 38 52 20 N -98 49 41 W 566.3 FAA KRVS TULSA JONES JR AIRPORT OK 36 2 22 N -95 59 4 W 194.5 FAA KSWO STILLWATER STILLWATER REGIONAL ARPT OK 36 9 37 N -97 5 9 W 300.2 FAA KTCC TUCUMCARI MUNICIPAL AIRPORT NM 35 10 56 N -103 36 11 W 1239.0 FAA KTOP TOPEKA MUNICIPAL(PHILIP BILLARD)AP KS 39 4 21 N -95 37 33 W 268.5 NWS KTUL TULSA INTERNATIONAL AIRPORT OK 36 11 51 N -95 53 11 W 198.1 NWS KWLD WINFIELD STROTNER FIELD KS 37 10 5 N -97 2 13 W 350.5 FAA 3.0 DATA COLLECTION AND PROCESSING UCAR/JOSS conducted no processing or quality control on these data. For information on ASOS data collection and processing please see: The ASOS User's Guide and Appendices and the ASOS Ready Reference Guide which have all been included with your data order. Here are the file names: IHOP_ASOS_Ready_Ref_Guide.pdf IHOP_asos_users_guide.pdf IHOP_asos_users_guide_app.pdf Further information is also available at: The NWS ASOS Home Page: http://205.156.54.206/asos/ or at the FAA Automated Weather Sensor Home Page: http://www2.faa.gov/asos/index.htm or at the NWS ASOS Technicians Home Page: http://www.ops1.nws.noaa.gov/asos/Index.htm 4.0 DATA FORMAT AND FILE NAMING 4.1 Data Format What follows is a very short description of the ASOS format. Further information can be found in the ASOS documents included with your order. The ASOS one minute data are in several sections (or "LISTING"s). 4.1.1 LISTING LEDWI No information yet. 4.1.2 LISTING 12HR PAGE #1 The columns are as follows UTC - UTC time (hhmm) VIS1 - Visibility extinction coefficient sensor #1 D/N1 - Day/Night indicator sensor #1 VIS2 - Visibility extinction coefficient sensor #2 D/N2 - Day/Night indicator sensor #2 VIS3 - Visibility extinction coefficient sensor #3 D/N3 - Day/Night indicator sensor #3 WIND DIR/SPD - 2-minute average wind direction (degrees) and wind speed (knots) 5SEC WIND - Greatest 5-sec average wind speed (and corresponding direction) during past minute. RVR - Runway Visual Range 4.1.3 LISTING 12HR PAGE #2 The columns are as follows: UTC - UTC time (hhmm) WX - Present Weather Type TS - PRECIP - 1-minute precipitation (inches) SUN SNOW ZR PRESS1 - Barometric pressure sensor #1 (inches of mercury) PRESS2 - Barometric pressure sensor #2 (inches of mercury) PRESS3 - Barometric pressure sensor #3 (inches of mercury) TEMP - Air temperature (degrees F) DEWPT - Dew point (degrees F) 4.1.4 LISTING 12HR PAGE #3 The columns are as follows: UTC - UTC time (hhmm) 15-MINUTE PRECIPITATION AMOUNT - (inches) 4.1.5 LISTING 12HR PAGE #4 Ceilometer #1 No information yet. 4.2 File Naming conventions LAW.ihop.20020616.02 where: LAW is the station ID (here Lawton OK). ihop is the project 2002 is the four digit year 06 is the two digit month 16 is the two digit day 02 is the file number for that day (starts with 00) The date of the file is the day the modem dialed the station. There may be data from the previous or following day in the file. 5.0 DATA REMARKS None. 6.0 REFERNCES None.