This data set illustrates the clean air sector utilized by the National Oceanic Atmospheric Administration (NOAA) Climate Monitoring and Diagnostics Laboratory (CMDL) at Point Barrow, Alaska. The clean air sector is described as north-northeast to southeast from the NOAA CMDL Tower.
This GIS data set was developed to illustrate the clean air sector for use in the BEO Science Research District Master Plan.
The Climate Monitoring and Diagnostics Laboratory (CMDL) of the National Oceanic and Atmospheric Administration, conducts sustained observations and research related to source and sink strengths, trends and global distributions of atmospheric constituents that are capable of forcing change in the climate of Earth through modification of the atmospheric radiative environment, those that may cause depletion of the global ozone layer, and those that affect baseline air quality. CMDL accomplishes this mission primarily through long-term measurements of key atmospheric species at sites spanning the globe, including five fully-equipped Baseline Observatories. These key species include carbon dioxide, carbon monoxide, methane, nitrous oxide, surface and stratospheric ozone, halogenated compounds including CFC replacements, hydrocarbons, sulfur gases, aerosols, and solar and infrared radiation. The measurements are of the highest quality and accuracy possible, and document global changes in key atmospheric species, which are all affected by mankind, identifying sources of interannual variability. In addition, research programs in key regions, utilizing an array of platforms including aircraft, balloons, ocean vessels and towers, complement the land-based information. CMDL's data are used to assess climate forcing, ozone depletion and baseline air quality, to develop and test diagnostic and predictive models, and to keep the public, policy makers, and scientists abreast of the current state of our chemical and radiative atmosphere.
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Intended for planning and management purposes.
P.O. Box 888
This data set is being archived as part of the Barrow Area Spatial Data Infrastructure effort. This project is made possible with funding from the National Science Foundation (NSF Award OPP-0004401) and the US Geological Survey (USGS Award Number: 03HQAG0177) to the Barrow Arctic Science Consortium (BASC).
Attributes were automatically generated by ESRI GIS software.
The attributes associated with this file are the ESRI defaults.
The bearing and range for the clean air sector were plotted from a high precision GPS coordinate taken for the NOAA CMDL Tower. This information was correlated with georeferenced IKONOS satellite imagery in ArcGIS to verify the locational information.
The clean air sector was prepared with the best available data as of August, 2003. NOAA CMDL annual reports were checked and the sector was visually confirmed by the station chief, Dan Endres.
Differential GPS data was collected. The data was processed using Trimble Geomatics Office (TGO) version 1.5 and the precision of the survey point was obtained from the adjustment report created by the software.
The clean air sector is not a hard fixed boundary.
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The effort to document and archive Barrow Area data has been led by BASC through a contract with Nuna Technologies and Michigan State University.
A DGPS point for the NOAA tower was surveyed by Allison Graves in August, 2003. The clean air sector data set was generated in ArcGIS based on a description listed in the NOAA CMDL annual reports.
POB 577
Email preferred.
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The attributes associated with this data set are comprised of the ESRI defaults associated with the shape file data format and were automatically generated by ArcGIS software. No additional attributes have been generated.
For additional information about the default attributes that are generated for ESRI shape files see the documentation associated with ArcGIS software or visit the ESRI web site at www.esri.com
CIRES, 449 UCB, University of Colorado
The National Snow and Ice Data Center (NSIDC) shall not be held liable for improper or incorrect use of the data described and/or contained herein. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistently within the limitations of geospatial data in general and these data in particular. Any related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. NSIDC gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. These data and related graphics are not legal documents and are not intended to be used as such. This disclaimer applies both to individual use of the data and aggregate use with other data.
CIRES, 449 UCB, University of Colorado