gov.noaa.ncdc:C00302 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Unknown tabular digital data http://www.ncdc.noaa.gov BOMEX - Rawinsonde and Radiometersonde Data is a historical digital data set archived at the National Climatic Data Center (NCDC). BOMEX Archive includes, data collected during the Barbados Oceanographic and Meteorological Experiment (BOMEX) in 1969. Parameters included in this dataset are: geopotential height, boundary layer, air temperature, wet bulb temperature, dew point temperature, humidity, winds, and radiation. With the cooperation of the Government of Barbados and with the National Oceanic and Atmospheric Administration as lead agency, the Barbados Oceanographic and Meteorological Experiment (BOMEX) was conducted over the tropical Atlantic East of Barbados in the summer of 1969. The field operations for this multiagency national study of the ocean-atmosphere system were divided into four observation periods: May 3 to 15, May 24 to June 10, June 19 to July 2, and July 11 to July 28. The first three were devoted to the Sea Air Interaction Program--the BOMEX 'Core Experiment'--within a 500-km by 500-km square ship array. During the fourth period, the array was extended southward to incorporate the Intertropical Convergence Zone. The following is a list of the 8 different records and their respected data sets for this project. Miscellaneous Data (DSI-9670) - C00598 Rawinsonde and Radiometersonde Data (DSI-9671) - C00302 Boom Surface Meteorological Data (DSI-9672) - C00303 Salinity-Temperature-Depth (STD) Data (DSI-9673) - C00599 Aircraft Data (DSI-9674) - C00600 Boundary Layer Instrument Package (BLIP) Data (DSI-9675) - C00304 Surface Radar Data (DSI-9676) - C00601 Dropsonde Data (DSI-9677) - C00602 Rawinsonde balloons launched from the BOMEX ships carried two instrument packages aloft for each observation: A temperature sonde equipped with a thermistor and a humidity sonde with a hygristor. All sondes and telemetry units were of standard National Weather Service type with these exceptions: (a) The temperature sondes were specially wired to yield only signals for temperature, low reference (190 Hz) instead of a humidity signal, and a special midreference signal (92 Hz) that replaces every fifth low reference in the sequence. This allowed more frequent reference signals and hence more precise corrections for variations in sonde characteristics. Selected precalibrated thermistors were used. (b) The temperature sonde pressure sensors were specially selected and precalibrated twice at the factory, once up and once down. Sensors that showed large difference were rejected. (c) The humidity sondes were modified to yield an almost continuous humidity signal, interrupted only occasionally for low-reference signal. Because the humidity data are much less sensitive to minor sonde battery variation that the temperature data, there was no need for frequent reference checks. A more sensitive uncalibrated pressure commutator was substituted for the usual baroswitch to further shorten the time occupied by reference signals. All pressure data were taken from the temperature sonde and time correlated to the humidity data. The net result was extraordinary fine vertical resolution in the humidity profile. Temperature sonde and humidity sonde signal output was acquired by separate receivers aboard ship and recorded automatically on the Signal Conditioning and Recording Device (SCARD), the primary shipboard recording unit, which was developed and operated in the field by personnel form NASA's Mississippi Test Facility (MTF). Data were also recorded on strip charts for quality control. Two types of balloon-tracking systems were used: the Scanwell Wind Finding at Sea System (WFSS) and radar wind finding systems. The data were also recorded on SCARD, as well as on strip charts for quality control. To make a wide range of climatic data available to researchers and the public. data set C00302 INFRARED RADIOMETERS RADIOSONDES RAWINSONDES BALLOONS RADIOSONDES BOMEX > Barbados Oceanographic and Meteorological Experiment National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce 19690501 19690731 Ground Condition Complete As Needed -60.0 -52.0 18.0 07.0 ISO 19115 Topic Category climatologyMeteorologyAtmosphere 004 elevation 006 oceans 014 DIF Discipline Keyword Thesaurus Earth Sciences > Atmosphere > Meteorology Earth Sciences > Atmosphere > Climatology Earth Sciences > Atmosphere > Weather Earth Sciences > Ocean > Oceanography GCMD Sciences Keyword Valids EARTH SCIENCE > ATMOSPHERE > ALTITUDE > GEOPOTENTIAL HEIGHT EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > ATMOSPHERIC PRESSURE MEASUREMENTS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > PRESSURE THICKNESS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > INCOMING SOLAR RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > NET RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SUNSHINE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > DEW POINT EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > VERTICAL WIND MOTION EARTH SCIENCE > OCEANS > OCEAN PRESSURE > SEA LEVEL PRESSURE EARTH SCIENCE > OCEANS > OCEAN WINDS > SURFACE WINDS GCMD Location Valids ATLANTIC OCEAN GCMD Location Valids SEA SURFACE TROPOSPHERE STRATOSPHERE BOMEX > Barbados Oceanographic and Meteorological Experiment RADIOSONDES RADIOSONDES BOMEX > Barbados Oceanographic and Meteorological Experiment BALLOONS RAWINSONDES BOMEX > Barbados Oceanographic and Meteorological Experiment BALLOONS INFRARED RADIOMETERS 1 None None Not provided Unknown Completeness information not available. Unknown Unknown The data file is divided into four sections: (1) 5-s or significant levels; (2) 10-mb surfaces; (3) standard pressure surfaces (1,000, 950, 900, 850,...mb) and (4) standard aircraft operating levels (305, 1,220, 2,135, and 3,040 m). Each section has a header, which indicated the number of valid counts, and a variable number of data scans of 1,300 characters. Format for Rawinsonde POSITION: 1-7 ELEMENT: Time from launch (Seconds) POSITION: 8-14 ELEMENT: Pressure (Millibars) POSITION: 15-20 ELEMENT: Temperature Degrees (Celsius) POSITION: 21-26 ELEMENT: Relative Humidity (Percent) POSITION: 27-31 ELEMENT: Specific Humidity (Grams per kilogram) POSITION: 32-36 ELEMENT: Dewpoint Degrees (Celsius) POSITION: 37-42 ELEMENT: Relative humidity (Percent) POSITION: 43-47 ELEMENT: Saturated vapor pressure (Millibars) POSITION: 48-52 ELEMENT: Vapor pressure (Milibars) POSITION: 53-57 ELEMENT: Specific Humidity (Grams per kilogram) POSITION: 58-62 ELEMENT: Dewpoint Degrees (Celsius) POSITION: 63-68 ELEMENT: Virtual Temperature (Degrees Kelvin) POSITION: 69-75 ELEMENT: Thickness (Meters) POSITION: 76-83 ELEMENT: Geopotential Height (Meters) POSITION: 84-91 ELEMENT: Geometric Height (Meters) POSITION: 92-97 ELEMENT: Potential temperature (Degrees Kelvin) POSITION: 98-103 ELEMENT: U wind component (Meters per second) POSITION: 104-109 ELEMENT: V wind component (Meters per second) POSITION: 110-115 ELEMENT: Wind direction (Degrees) POSITION: 115-119 ELEMENT: Windspeed (Meters per second) POSITION: 120-124 ELEMENT: U component, ship motion (Meters per second) POSITION: 125-129 ELEMENT: V component, ship motion (Meters per second) 999 = missing data Format for Radiometersonde POSITION: 1-8 ELEMENT: Pressure (millibars in tenths) POSITION: 9-16 ELEMENT: Time (minutes in tenths) POSITION: 17-24 ELEMENT: Temperature (degrees centigrade) POSITION: 25-32 ELEMENT: IR Radiation upward (Langleys/minute) POSITION: 33-40 ELEMENT: IR Radiation downward (Langleys/minute) POSITION: 41-48 ELEMENT: IR Radiation net (Langleys/minute) POSITION: 49-56 ELEMENT: Cooling/Warming (degrees centigrade/day) POSITION: 57-64 ELEMENT: Q-mix (Grams/kilogram) POSITION: 65-72 ELEMENT: Relative humidity (whole percent) POSITION: 73-80 ELEMENT: Blank Note - Each sounding will be preceded by one header card giving ship and date. 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 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