gov.noaa.ncdc:C00540 National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce Unknown tabular digital data http://www.ncdc.noaa.gov U.S. Integrated Surface Irradiance Study (ISIS) Level 2 (SURFRAD) is digital data set DSI-9872, archived at the National Climatic Data Center (NCDC).ISIS is a continuation of earlier National Oceanic and Atmospheric Administration (NOAA) surface-based solar monitoring programs. ISIS provides basic surface radiation data with repeatability, consistency, and accuracy based on reference standards maintained at levels better than 1%. ISIS addresses questions of spatial distributions and time trends at sites selected to be regionally representative and long-term continuous records of observations. The Air Resources Laboratory (ARL) operates the NOAA national broadband solar radiation network, collecting data in both the visible and ultraviolet (UV-B) wavebands. ISIS operates at two levels: Level 1 stations are basic, monitoring incoming radiation only. Level 2 stations are more fully instrumented, focusing on surface radiation balance. Level 2 stations form the SURface RADiation Budget Network (SURFRAD) of stations.SURFRAD stations operate in the United States of America. Fifteen stations are planned. At this writing, NCDC has data in archive from 6 stations in climatologically diverse regions: Fort Peck, Montana; Boulder, Colorado;Bondville, Illinois; Goodwin Creek, Mississippi; Penn State, Pennsylvania; and Desert Rock, Nevada; from 1995 onward. Radiation measurements at SURFRAD stations cover the range of the electro-magnetic spectrum that affects the earth/atmosphere system. Global solar and its components are measured separately. Total downwelling (global) solar radiation is measured on the main platform by an upward looking broadband pyranometer. The direct component is monitored with a normal incidence pyrheliometer (or NIP) mounted on an automatic sun tracker, and the diffuse component is measured by a shaded pyranometer that rides on the solar tracker. Diffuse solar was not in the original suite of SURFRAD measurements. The shaded pyranometer was added in 1996 when a support platform with a shade arm mechanism was fitted to the trackers. A third pyranometer is mounted facing downward on a crossarm near the top of the 10-meter tower to measure solar radiation reflected from the surface. An upward looking pyrgeometer on the main platform measures long wave (thermal infrared) radiation emitted downward by clouds and other atmospheric constituents. Another pyrgeometer, mounted facing downward on the crossarm atop the tower, senses upwelling long wave radiation. These measurements of upwelling and downwelling in the solar and infrared wavebands constitute the complete surface radiation budget. Besides the surface radiation budget, other ancillary parameters are monitored. There are two instruments on the main platform that monitor wavebands of special interest. A UVB radiometer measures the degree of harmful ultraviolet radiation (290-320 nm) that evades the ozone layer and reaches the surface. Another instrument monitors the intensity of the waveband active in photosynthesis (400 to 700 nm). The final radiometer in the SURFRAD suite is the Multi-Filter Rotating Shadowband Radiometer (MFRSR) which measures both global and diffuse solar radiation in one broadband and six narrow bands of the solar spectrum. These are useful for obtaining aerosol loading information. Instruments for measuring wind speed and direction, air temperature, and relative humidity also reside at the top of the 10-meter tower. A barometer in the data logger box measures station pressure. The redundancy of three component solar measurements (global, direct and diffuse) provides a useful tool for quality control of the SURFRAD data. In addition, the sum of the diffuse and direct is actually a better measure of total solar than the global measurement alone because when the sun is near the horizon, a change in the cosine response of the global pyranometers sensor introduces errors in the global measurement. Level 2 major parameters are: global and direct beam irradiance, UV-B global irradiance, downwelling and upwelling thermal infrared, radiation active in photosynthesis, net solar (global-UPGBL), net infrared (IR-UPIR), net radiation (NETSOLAR+NETIR), temperature, relative humidity, wind speed and direction, station pressure, and solar zenith angle. The SURFRAD program has close ties with scientists at the University of Maryland; Pennsylvania State University; National Environmental Satellite, Data, and Information Services (NESDIS); the University Corporation for Atmospheric Research (UCAR) Office of Field Project Support; the GCIP project; the U.S. Department of Energy (DOE); and Unidata. SURFRAD is also part of the world-wide Baseline Surface Radiation Network (BSRN). Operationally, SURFRAD has the cooperation of the U.S. Department of Agriculture (USDA), the Fort Peck Tribes of Montana, Pennsylvania State University, and the Illinois State Water Survey.Observations from SURFRAD have been used for evaluating satellite-based estimates of surface radiation and for validating hydrology, weather prediction, and climate models. To make a wide range of climatic data available to researchers and the public. Unknown Unknown 1617 Cole Boulevard, Golden CO 80401 National Renewable Energy Laboratory data set C00540 ANEMOMETERS HUMIDITY SENSORS HYGROMETERS MFRSR > Multifilter Rotating Shadowband Radiometer and Broadband Pyranometer PYRANOMETERS PYRGEOMETERS PYRHELIOMETERS RADIOMETERS TEMPERATURE SENSORS THERMOMETERS WIND VANES WEATHER STATIONS National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce National Solar Radiation Database (1961-1990), Users Manual, National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden CO 80401. 19950101 Present Ground Condition In work As Needed -120.0 -74.0 49.0 30.0 ISO 19115 Topic Category climatologyMeteorologyAtmosphere 004 elevation 006 DIF Discipline Keyword Thesaurus Earth Sciences > Atmosphere > Meteorology Earth Sciences > Atmosphere > Climatology Earth Sciences > Atmosphere > Weather GCMD Sciences Keyword Valids EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SURFACE PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ATMOSPHERIC EMITTED RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > INCOMING SHORTWAVE RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > LONGWAVE RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > NET RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > OUTGOING LONGWAVE RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > RADIATIVE FLUX EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SHORTWAVE RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR IRRADIANCE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED RADIANCE EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED FLUX EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > THERMAL INFRARED EARTH SCIENCE > SPECTRAL/ENGINEERING > ULTRAVIOLET WAVELENGTHS > ULTRAVIOLET FLUX EARTH SCIENCE > SPECTRAL/ENGINEERING > ULTRAVIOLET WAVELENGTHS > ULTRAVIOLET RADIANCE EARTH SCIENCE > SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE FLUX EARTH SCIENCE > SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE RADIANCE EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR IRRADIANCE EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR ULTRAVIOLET GCMD Location Valids UNITED STATES OF AMERICA > COLORADO > BOULDER UNITED STATES OF AMERICA > ILLINOIS > BONDVILLE UNITED STATES OF AMERICA > MISSISSIPPI > GOODWIN CREEK UNITED STATES OF AMERICA > MONTANA > FORT PECK UNITED STATES OF AMERICA > NEVADA > DESERT ROCK UNITED STATES OF AMERICA > PENNSYLVANIA > PENN STATE GCMD Location Valids LAND SURFACE TROPOSPHERE STRATOSPHERE WEATHER STATIONS PYRANOMETERS WEATHER STATIONS PYRHELIOMETERS WEATHER STATIONS PYRGEOMETERS WEATHER STATIONS RADIOMETERS WEATHER STATIONS ANEMOMETERS WEATHER STATIONS WIND VANES WEATHER STATIONS THERMOMETERS WEATHER STATIONS TEMPERATURE SENSORS WEATHER STATIONS HYGROMETERS WEATHER STATIONS HUMIDITY SENSORS WEATHER STATIONS Multifilter Rotating Shadowband Radiometer and Broadband Pyranometer MFRSR 5 None None Not provided Unknown Completeness information not available. Unknown Unknown http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td9872.doc 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-9872 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