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ISET Calendar Item DetailsISETCSC COLLOQUIUM, Dr. Frank Flocke; Scientist Community Airborne Research Instrumentation Group; Atmospheric Chemistry Division National Center for Atmospheric Research; Boulder, CO., 4-5PM, IRC Bldg. # 410 04-28-2010 Title: Airborne and ground‐based measurements of reactive nitrogen and other photochemcial tracers by NCAR’ CARI group.
Speaker: Dr. Frank Flocke; Scientist Community Airborne Research Instrumentation Group; Atmospheric Place: IRC 410 Time: 4-5 PM Abstract The Community Airborne Research Instrumentation (CARI) Group is shared between the NCAR Earth System Laboratory / Atmospheric Chemistry Division (NESL/ACD) and the Earth Observing Laboratory (EOL). We operate, maintain, and develop a number of instruments for the airborne and ground based measurement of photochemical tracers (CO, VOC, and a number of reactive nitrogen compounds), and greenhouse gases (H2O and CO2). These instruments have been deployed on NCAR/NSF, NOAA, and NASA research aircraft as well as on the ground in a number of recent campaigns. This presentation will give an overview of the techniques used in our group, some recent instrument development and improvement work, and results from a number of recent field campaigns, with emphasis on reactive nitrogen, PANs, and VOC.
BIO: Frank received his Ph.D. in Chemistry from the University of Wuppertal and the Research Center Jülich in 1992. He came to NCAR as a postdoc the same year, returned as a visitor in late 1993 and accepted a position as Scientist I in 1994. His work focused on the measurement of simple and substituted alkyl nitrates in ambient air and expanded to other tracer measurements in canister samples from the troposphere and the lower stratosphere. In 1998 Frank and coworkers began to develop and build a compact, fast time response, gas chromatograph for the airborne measurement of PANs in ambient air. This instrument was first deployed in 1999 during the NOAA Southern Oxidant Study and quickly became a standard for fast PANs measurements. In collaboration with Greg Huey’s group at Georgia Tech, we developed a CIMS instrument for the airborne measurements of PANs in ambient air, with a time resolution of one to two seconds and comparable detection limit to the GC system. This instrument was first deployed during the ICARTT program in 2004 and a number of projects since then. We also conducted a large number of laboratory tests to fully characterize the CIMS technique. In 2006 Frank became the head of the Community Airborne Research Instrumentation (CARI) group, which is shared between two laboratories (EOL and NESL/ACD) at NCAR. The group operates airborne instrumentation for a number of photochemical tracers and greenhouse gases. |