The seventh SPARC science report on 'The Mystery of Carbon Tetrachloride' is now available! The full report helps to answer policy-relevant questions related to the global budget of carbon tetrachloride, an important ozone-depleting substance, closing the gap between emission reported to UNEP's Ozone Secretariat and those estimated from atmospheric observations.
News & Events
The 8th Implementation and Coordination Meeting (ICM-8) of the GCOS Reference Upper-Air Network (GRUAN) was held in Boulder, CO (25–29 April 2016). GRUAN and NDACC have had a long-standing collaboration (dating back to ICM-1 in 2009) that was further formalized by both GRUAN and NDACC becoming Cooperating Networks.
Until recently, the abundance of atmospheric ethane (C2H6) has been declining, primarily due to reduced fugitive emissions from oil and gas activities and to the successful implementation of pollution abatement measures.
Tropospheric ozone is an important greenhouse gas and an air pollutant impacting human health and vegetation. Recent studies highlight the importance of increasing the number of tropospheric ozone profiling stations and long-term measurements to fully understand its sources and variability.
Like carbon dioxide, methane is one of the most important greenhouse gases. After a period of stagnation around 2000, atmospheric methane concentrations started to rise again in 2007. So far, the causes have been unknown.
With help from the NDACC Data Host Facility, the Theory and Analysis Working Group has uploaded model support files to the NDACC data archive. There are two types of content, one customized for the FTIR group and the other for the Lidar, Dobson, and Sonde working groups.
The annual meeting of the international Steering Committee (SC) for NDACC was held from October 12 to 15 at the Scripps Institution of Oceanography in La Jolla, CA, a research site for the AGAGE Cooperating Network.
Researchers from Karlsruhe Institute of Technology (KIT, Karlsruhe, Germany) have for the first time used several mobile Fourier Transform Spectrometers for detecting the CO2 emitted by a large metropolitan region in solar absorption spectra. The campaign was performed in June and July 2014 around Berlin, Germany.
The 2015 NDACC Steering Committee meeting will take place 12–16 October 2015 at the Scripps Institution of Oceanography in La Jolla, CA.
At the 2014 NDACC Steering Committee meeting in Brussels (3–5 November) Dr. Anne Thompson, Scientist at NASA's Goddard Space Flight Center (Maryland, USA) was elected Co-Chair of NDACC for a term from 2014–2017.