Accession Number:

AD1100653

Title:

The Network for the Detection of Atmospheric Composition Change (NDACC): History, Status and Perspectives

Descriptive Note:

Journal Article - Open Access

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC WASHINGTON United States

Report Date:

2018-04-11

Pagination or Media Count:

30.0

Abstract:

The Network for the Detection of Atmospheric Composition Change NDACC is an international global network of more than 90 stations making high-quality measurements of atmospheric composition that began official operations in 1991 after 5 years of planning. Apart from sonde measurements, all measurements in the network are performed by ground-based remote-sensing techniques. Originally named the Network for the Detection of Stratospheric Change NDSC, the name of the network was changed to NDACC in 2005 to better reflect the expanded scope of its measurements. The primary goal of NDACC is to establish long-term databases for detecting changes and trends in the chemical and physical state of the atmosphere meso-sphere, stratosphere, and troposphere and to assess the coupling of such changes with climate and air quality. NDACCs origins, station locations, organizational structure, and data archiving are described. NDACC is structured around categories of ground-based observational techniques sonde, lidar, microwave radiometers, Fourier-transform infrared, UV-visible DOAS differential optical absorption spectroscopytype, and Dobson-Brewer spectrometers, as well as spectral UV radiometers, timely cross-cutting themes ozone, water vapour, measurement strategies, cross-network data integration, satellite measurement systems, and theory and analyses. Participation in NDACC requires compliance with strict measurement and data protocols to ensure that the network data are of high and consistent quality. To widen its scope, NDACC has established formal collaborative agreements with eight other cooperating networks and Global Atmosphere Watch GAW. A brief history is provided, major accomplishments of NDACC during its first 25 years of operation are reviewed, and a forward-looking perspective is presented.

Subject Categories:

  • Astrophysics
  • Cybernetics
  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE