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Instrument

TDMA
Tandem Differential Mobility Analyzer

The Tandem Differential Mobility Analyzer (TDMA) is an in situ airborne and ground-based analyzer that measures the physical properties of aerosol particles such as size distribution and concentration. It can measure particles in the size range of 0.013 to 0.75 mm at a size resolution of 0.013 mm at 0.2 mm. The TDMA is sometimes combined with an Aerodynamic Particle Sizer (APS) to allow measurements of particles in the submicron range. A typical measurement sequence of TDMA can take approximately 45 minutes to complete.

NASA's DC-8 flying laboratory passes Antarctica's tallest peak, Mount Vinson, on Oct. 22, 2012, during a flight over the continent to measure changes in the massive ice sheet and sea ice. Credit: NASA/Michael Studinger (Photography courtesy NASA Images)

Instrument Details

Meter/Analyzer
Earth Science > Atmosphere > Aerosols > Aerosol Forward Scatter
Earth Science > Atmosphere > Aerosols > Aerosol Backscatter
Earth Science > Atmosphere > Aerosols > Cloud Condensation Nuclei
Earth Science > Atmosphere > Aerosols > Aerosol Particle Properties
Earth Science > Atmosphere > Aerosols
Troposphere
45 min
Point
N/A
https://www.arm.gov/publications/tech_reports/handbooks/tdma_handbook.pdfExternal Link
  • Don Collins

  • Don Collins

  • University of Minnesota, Texas A&M, TSI

  • National Bureau of Standards, U.S. Environmental Protection Agency

  • Currently unavailable

PAC2001

Pacific 2001 Air Quality Study

2001
Lower Fraser Valley, British Columbia, Canada
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1 Deployment
· 8 Data Products

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