gov.noaa.ncdc:C00129 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Unknown tabular digital data http://www.ncdc.noaa.gov http://cdo.ncdc.noaa.gov/pls/plclimprod/cdomain.DS3500 http NCDC Climate Data Online - Surface Data, Monthly Global (DSI-3500) Data documentation, sample data, and station list are available. information This product is available from the National Climatic Data Center (NCDC). It is available as digital data set (DSI-3500) and also as a publication named Monthly Climatic Data for the World (MCDW), both of which contain the same data. The geographic coverage is selected stations in most nations that are members of the World Meteorological Organization (WMO) -- in effect, global. MCDW is prepared in cooperation with the WMO. NCDC processes international electronic transmissions in CLIMAT format (surface land station), CLIMAT SHIP format (ocean ship) and CLIMAT TEMP format (upper air), for the purpose of building a surface/upper air data base and producing MCDW. Approximately 1200 surface and 500 upper air stations are processed. These data are used in agricultural and energy assessment activities, in crop yield model development, and in the analysis of global atmospheric and regional climatic variations. The major parameters in MCDW are monthly mean station pressure, sea level pressure, and vapor pressure with departure from normal, mean temperature with departure from normal, total precipitation with departure from normal, percentage of long-term average sunshine, and upper air data such as height, temperature, dew point temperature depression, vector wind direction and speed with the steadiness factor for the surface and constant pressure levels of 850, 700, 500, 300, 200, 150, 100, 50, and 30 mb. The publication began in 1948. The digital data set DSI-3500 contains data from 1986 to the present. The National Center for Atmospheric Research (NCAR) produces important derived data sets DSI-9645 and DS- 9648, which combine MCDW data and data from other sources, from as long ago as 1731. These are also available from NCDC. To make a wide range of climatic data available to researchers and the public. World Meteorological Organization (WMO) Unknown data set C00129 ALTIMETERS ANEMOMETERS BAROMETERS HYGROMETERS PSYCHROMETERS RADIOSONDES RAIN GAUGES TEMPERATURE SENSORS THERMOMETERS WIND VANES METEOROLOGICAL STATIONS RADIOSONDES SHIPS National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce World Meteorological Organization (WMO) Publication No. 9, Volume A (digital version). http://cdo.ncdc.noaa.gov/pls/plclimprod/cdomain.DS3500 http://cdo.ncdc.noaa.gov/pls/plclimprod/cdomain.DS3500 http://ols.nndc.noaa.gov/plolstore/plsql/olstore.prodspecific?prodnum=C00129-TAP-A0001 19860101 Present Ground Condition In work As Needed -180.0 180.0 90.0 -90.0 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 > ALTITUDE > STATION HEIGHT EARTH SCIENCE > ATMOSPHERE > ALTITUDE > GEOPOTENTIAL HEIGHT EARTH SCIENCE > ATMOSPHERE > ALTITUDE > BAROMETRIC ALTITUDE EARTH SCIENCE > ATMOSPHERE > ALTITUDE > TROPOPAUSE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SURFACE PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > PRESSURE ANOMALIES EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > ATMOSPHERIC PRESSURE MEASUREMENTS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SUNSHINE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > DEW POINT TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE AIR TEMPERATURE 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 WATER VAPOR > WATER VAPOR EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION ANOMALIES GCMD Location Valids GLOBAL LAND GLOBAL OCEAN GCMD Location Valids LAND SURFACE SEA SURFACE BOUNDARY LAYER TROPOSPHERE STRATOSPHERE METEOROLOGICAL STATIONS ANEMOMETERS METEOROLOGICAL STATIONS THERMOMETERS METEOROLOGICAL STATIONS PSYCHROMETERS METEOROLOGICAL STATIONS RAIN GAUGES METEOROLOGICAL STATIONS ALTIMETERS METEOROLOGICAL STATIONS HYGROMETERS METEOROLOGICAL STATIONS BAROMETERS METEOROLOGICAL STATIONS WIND VANES SHIPS ANEMOMETERS SHIPS THERMOMETERS SHIPS TEMPERATURE SENSORS SHIPS PSYCHROMETERS SHIPS BAROMETERS SHIPS WIND VANES RADIOSONDES RADIOSONDES 1 None None 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/ncdcordering.html http://cdo.ncdc.noaa.gov/pls/plclimprod/cdomain.DS3500 Data documentation, sample data, and station list are available. ASCII format Not provided Unknown Completeness information not available. Unknown Unknown Surface/Upper Air Identification The surface/upper air designator and WMO station and region numbers. For surface data, each 500-byte physical record contains five 100-byte logical records. There may be several empty surface records (filled with M's) in the last tape containing surface data. In the format description that follows: All elements are character string variables. An element is filled with all M's if the data are missing or deleted. Each byte is a number, a blank or an M unless stated otherwise in brackets in "Contents." "Flag #" refers to a flag in one of the bytes 77-84. Flag #1 is in byte 77, #2 is in byte 78, etc. "Note #" refers to one of the numbered, explanatory notes that follow the format. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Surface/Upper Air Designator The designator indicates whether the data are surface or upper air, and which of three types of reports the data represent. Position 1 http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 1 Surface current http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 2 Surface late report http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 3 Surface corrections http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 4 Upper Air current http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 5 Upper Air late report http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 6 Upper Air corrections http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 7 Unpublished station http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 8 Unpublished late report http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 9 Unpublished correction http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc WMO Station Number The WMO stations numbers are assigned by the World Meteorological Organization. A complete list is published in the WMO Publication Number 9, Volume A - Stations. 6th character normally blank. Position 2-7. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc WMO's Publication No. 9, Volume A http://www.wmo.ch/web/www/ois/volume-a/vola-home.htm WMO Region Number The WMO region numbers are assigned by the World Meteorological Organization. Position 21. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc WMO Region Numbers http://weather.noaa.gov/tg/site.shtml Surface Time period The data period type, year, month and number of days of data for each month. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Data Period Type The data period type indicates whether the data is a single month or some average of months. The present system only allows a single month. Position 8. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 1 Single month of data. This is the only data period type created by this system at this time. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Year The year of the record. There is space for a beginning year and month and an ending year and month of the data. For data period type 1, the beginning year and month are sufficient, therefore bytes 15-20 are blank. Position 9-12 http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 1998 4 digit year http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Month The month of the record. There is space for a beginning year and month and an ending year and month of the data. For data period type 1, the beginning year and month are sufficient, therefore bytes 15-20 are blank. Position 13-14 http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 12 2 digit month http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Number of Days Observations Taken The number of days observations were taken during the month of data. Position 22-23 http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 30 Days are represented by 2 digits http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Surface Data The surface data of the record. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Mean Station Pressure Mean station pressure is the mean station atmospheric pressure for the month of record, expressed in millibars to the nearest tenth. Measured to the nearest 1/10 of a unit. The decimal point is omitted from the field. Actual value = variable/10. Position 24-28. Flag #1. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 10133 Represented by a 5 digit value rounded to the nearest tenth. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Mean Sea Level Pressure Mean sea level pressure is the mean sea level pressure for the month of record as computed for the station, expressed in tenths of a millibar. For high-altitude stations, the height of a standard pressure level (whole gpm) is normally given instead: If a Y appears at the right side of the value, the value is understood to be the height of the 850 millibar pressure level. If a Z appears, it is the 700 millibar level, instead. Position 29-34. Flag #2. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 10314 Represented by a 5 digit value. Measured to the nearest 1/10 of a unit. The decimal point is omitted from the field. Actual value = variable/10. Position 29-33. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Y For high-altitude stations: the value is the height of the 850 millibar pressure level. Position 34. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Z For high-altitude stations: the value is the height of the 700 millibar pressure level. Position 34. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Mean Temperature Mean temperature is the monthly mean of temperature for the month of record. Mean temperature is expressed in tenths of a degree Celsius. Measured to the nearest 1/10 of a unit. The decimal point is omitted from the field. Actual value = variable/10. Position 35-38. Flag #3. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 285 Represented by a 3 digit value in tenths of a degree Celsius. In this case the value would be 28.5 degrees C. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Departure of Mean Temperature from Average Temperature departure is the result of subtracting a long-term average temperature for the same month from the above mean temperature. Measured to the nearest 1/10 of a unit. The decimal point is omitted from the field. Actual value = variable/10. Position 39-43. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 285 Represented by a 3 digit value in tenths of a degree Celsius. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Mean Vapor Pressure Vapor pressure is the amount of atmospheric pressure due to water vapor alone. Mean vapor pressure is the mean for the month of record. Units are tenths of a millibar. Measured to the nearest 1/10 of a unit. The decimal point is omitted from the field. Actual value = variable/10 Position 44-46. Flag #4. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 134 Represented by a 3 digit value in tenths of a millibar. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Departure of Mean Vapor Pressure from Average Vapor pressure departure is the result of subtracting a long-term average vapor pressure for the month of record from the current mean value. Measured to the nearest 1/10 of a unit. The decimal point is omitted from the field. Actual value = variable/10 Position 47-50. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 134 Represented by a 3 digit value in tenths of a millibar. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Number of Days with Precipitation The number of days with precipitation of one millimeter or greater. Position 51-52. Flag #5. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 05 Represented by a 2 digit value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Total Precipitation All precipitation for the month is totaled. The total is expressed in whole millimeters. Position 53-56. Flag #6. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 0143 Represented by a 4 digit whole value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Departure of Total Precipitation from Average Precipitation departure is the result of subtracting a long-term average precipitation total for the month of record from the current total precipitation value. Position 57-61. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 01439 Represented by a 5 digit value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Precipitation Quintile All past precipitation totals for the month of record, and the current total, are listed in order of increasing amounts; the list is divided into five equal sections; precipitation quintile is the section number, 1 - 5, that the current total appears in. However, a current total lower than any other total is assigned 0; and a current total higher than any other total is assigned 6. Position 62. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 0 6 Quintile is a number from 0 to 6. A brief explanation follows: Past precipitation totals for a particular month are listed in increasing order, regardless of date. The list is partitioned equally into 5 sections and quintiles. Top section (lowest totals) is quintile 1. Bottom is 5. A precipitation total from a new data record is compared with the list. If the new precip total is lower or higher than any total on the list, it is assigned quintile number 0 to 6, respectively. Otherwise, the new total is given the quintile number of the section it would be placed in. When the past data are such that it is not clear what section to place it in, the highest candidate section is choosen. 1 Sunshine Duration Sunshine duration for the month is given in whole hours. Position 63-65. Flag #7. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 300 Represented by a 3 digit value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Sunshine Percent of Long-Term Average Sunshine percent of long-term average is the result of dividing sunshine duration by a long-term average sunshine duration for the month of record, and multiplying the result by 100 percent. Position 66-68. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 680 Represented by a 3 digit value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Mean Sea Surface Temperature The mean sea surface temperature is the monthly mean air temperature from the present month and year. Temperatures are expressed in tenths of a degree Celsius. Measured to the nearest 1/10 of a unit. The decimal point is omitted from the field. Actual value = variable/10. Most often available from ocean ships reporting in CLIMAT SHIP format. These spaces are usually blank. Position 69-72. Flag #8 http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 6283 Represented by a 4 digit value expressed in tenths of a degree Celsius. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Departure of Mean Sea Surface Temperature from Average The temperature departure is the result of subtracting a long-term average temperature for the month from the mean temperature. Measured to the nearest 1/10 of a unit. The decimal point is omitted from the field. Actual value = variable/10. Most often available from ocean ships reporting in CLIMAT SHIP format. These spaces are usually blank. Position 73-76. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 6283 Represented by a 4 digit value expressed in tenths of a degree Celsius. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Flags Flag # refers to a flag in one of the bytes 77-84. Flag #1 is in byte 77, #2 is in byte 78, etc. Position 77-84. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 77 84 Indicate the current condition of each element in the record. Blank means the value is presumed good. Asterisk (*) means the value is considered suspect. Pound symbol (#) means the original value was deleted. Any value now given is presumed good. 1 Not Used Positions not used. Position 85-100. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Blank No data is given for these positions. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Upper Air Time Period The upper air time period of the record. In an upper air record, the first 32 characters comprise the header information group. Afterwards is up to 12 flight levels, each represented by a 39-character group. The groups normally consist of the surface level and 9 upper air pressure levels: SFC, 850, 700, 500, 300, 200, 150, 100, 050, and 030 millibars. Format for an upper air record follows: All elements are character string variables. Each byte is a number, blank or M unless otherwise indicated in brackets under "Contents." "Flag #" refers to one of the flags in bytes 32-39 (Flag #1 is in byte 32, etc.) "Note #" refers to a numbered explanatory note that follows the format. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Upper Air Observation Time Code The time of day the data of record is observed. Position 22. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 1 00 Hours GMT http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc 2 12 Hours GMT http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc 3 Both http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc / Other http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Blank Unknown http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Upper Air Data The upper air data of the record. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Number of Levels The number of levels can be up to 12. The ten standard levels are SFC, 850, 700, 500, 300, 200, 150, 100, 50, and 30 millibars. The upper air records for unreported levels are blank and filled up to 12 levels, but is normally 1-10. Position 23-24. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc SFC Observation at surface level. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Blank These positions are left blank. Position 25-32. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Blank These positions are not used. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Level Quality Indicator Level quality indicator is not used. This space is reserved for a future quality control module. Position 1. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Blank Not used yet. The space is reserved for a later quality control module. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Pressure Level at the Surface The pressure level at the surface is expressed in the standard pressure levels, SFC, 850, 700, 500, 300, 200, 150, 100, 50, and 30 millibars. Position 2-4. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc SFC The pressure level at the surface is expressed in the standard pressure levels, SFC, 850, 700, 500, 300, 200, 150, 100, 50, and 30 millibars. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Height of Pressure Level The height of pressure level is the station elevation if the pressure level is SFC. Otherwise it is the height (gpm) of a standard pressure level. Position 5-9. Flag #1. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 13423 Represented by a 5 digit value. Height (gpm) of pressure level, but of 2-4 is SFC then surface pressure (mb) http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Number of Missing Days of Temperature Number of missing days of temperature is the number of days in the data month in which no temperature data are available for each pressure level. Position 10-11. Flag #2. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 03 Represented by a 2 digit value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Mean Temperature for Upper Air Mean temperature is the monthly mean temperature for the present month and year at each pressure level. Units are tenths of a degree. Position 12-16. Flag #3. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 12445 Represented by a 5 digit value. Measured to the nearest 1/10 of a unit. The decimal point is omitted from this field. Value = variable /10. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Mean Dew Point Temperature Depression Mean dew point temperature depression is the difference between the monthly mean temperature and the monthly mean dew point temperature at each pressure level. Position 17-20. Flag #4. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 1244 Represented by a 4 digit value. Measured to the nearest 1/10 of a unit. The decimal point is omitted from this field. Value = variable /10. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Number of Days Wind Observing Missing The number of missing days of mean vector wind is the number of days in the data month for which no wind data are available at each level. Position 21-22. Flag #5. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 03 Represented by a 2 digit value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Wind Steadiness Factor The wind steadiness factor is the ratio of the monthly mean vector wind speed to the monthly mean scalar wind speed for the current month and year. Position 23-25. Flag #6. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 131 Represented by a 3 digit percentage value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc Mean Vector Wind Direction The direction of the mean vector wind is the compass direction, in degrees zero to 359, from which the wind blew, of the resultant wind for the month. Position 26-28. Flag #7. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 0 359 Degrees Mean Vector Wind Speed The mean vector wind speed is the speed (mps) of the month's resultant wind. Position 29-30. Flag #8. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc 14 Represented by a 2 digit value. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc Flags Flags associated with the Upper Air Data Portion. Indicate the current condition of each element in the record. Blank means value is presumed good. Asterisk (*) means value is suspect. Pound symbol (#) means original value was deleted, any value now given is presumed good. Position 31-39. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc * Value is suspect. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3240.doc READING THE FILE Here is a suggested FORTRAN 77 code fragment to read the file and set the data up for eash interpretation: CHARACTER*32 UPHEDR CHARACTER*39 UPLEVEL (12) CHARACTER*100 SFCDAT (5) CHARACTER*500 DATA EQUIVALENCE (DATA, SFCDAT, UPHEDR) EQUIVALENCE (DATA (33:33), UPLEVL) READ (1, 1001, END = 999) DATA 1001 FORMAT (A500) One can test DATA(1:1), which is a surface/upper air indicator, after doing READ. If DATA (1:1) is '1', '2', or '3', all the data in the physical record are surface; variable SFCDAT can be used. There will be a separate surface record in each of the 5 array elements of SFCDAT. But note that the last 500-byte record that contains surface data on the tape may have all M's in 1 or more logical records. If DATA(1:1) is '4', '5', or '6', the data are a single upper air record; the variables UPHEDR and UPLEVL can be used. UPHEDR contains the 32-character header information group, while the 12-element array UPLEVL contains the levels. Note that bytes 23-24 in UPHEDR say how many elements of UPLEVL actually contain data. The remaining of the 12 levels are blank filled. Data are merged on any file that contains more than a month of data. Late reports and corrections will be feewer than might be expected because, if their dates are within the time span of current data on the file, they become current data. A final note: The Annual for the MCDW (TD3500) is sent to NCAR at the end of each data year. These data are used to create DS-9645 - Surface data and DS-9648 - Upper Air data. http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3500.doc National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Customer Services Branch Mailing and physical

151 Patton Avenue

Room 468

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/ncdcordering.html DSI-3500 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. ArcIMS http://gis.ncdc.noaa.gov/website/ims-cdo/gsom/ http://gis.ncdc.noaa.gov/website/ims-cdo/gsom/ http CDO - Surface Data, Monthly Global Data Access Service order Open Geospatial Consortium Web Map Service (WMS) http://gis.ncdc.noaa.gov/wmsconnector/com.esri.wms.Esrimap?version=1.0.0&service=WMS&request=getcapabilities&ServiceName=WMS_gsom http://gis.ncdc.noaa.gov/wmsconnector/com.esri.wms.Esrimap?version=1.0.0&service=WMS&request=getcapabilities&ServiceName=WMS_gsom http browser ESRI Map File OGC WMS get map request download Open Geospatial Consortium Web Feature Service (WFS) http://gis.ncdc.noaa.gov/wfsconnector/com.esri.wfs.Esrimap/WFS_gsom?request=getcapabilities&service=WFS&version=1.0.0 http://gis.ncdc.noaa.gov/wfsconnector/com.esri.wfs.Esrimap/WFS_gsom?request=getcapabilities&service=WFS&version=1.0.0 http browser ESRI Basic Web Feature Service ESRI Basic Web Feature Service for Monthly Climatic Data for the World information ASCII format http://ols.nndc.noaa.gov/plolstore/plsql/olstore.prodspecific?prodnum=C00129-TAP-A0001 http://ols.nndc.noaa.gov/plolstore/plsql/olstore.prodspecific?prodnum=C00129-TAP-A0001 http NOAA National Data Center (NNDC) Online Store Links to view information or order data, Monthly Climatic Data for the World. order Pricing is dependent on customer order specifications. Please contact NCDC for information on fees and terms for retreiving the Data Set or Product. 20071023 20060627 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Customer Services Branch Mailing and physical

151 Patton Avenue

Room 468

Asheville North Carolina 28801-5001 USA 828-271-4800 828-271-4010 828-271-4876 ncdc.metadata@noaa.gov 8:00 - 6:00 Eastern Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002 http://www.ngdc.noaa.gov/metadata/extensions/local_extensions.html NGDC Extensions to FGDC Metadata http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/MetadataRemoteSensingExtens.pdf http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/remote-sensing-metadata Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata, FGDC-STD-012-2002 http://www.eis.noaa.gov/fgdc/fgdcleg.html NOAA Supplemental Information in Description (NOAA legacy extension to FGDC)