clap > Continuous Light Absorption PhotometerInstrument Type(s) > Baseline • External • Guest

The continuous light absorption photometer (CLAP) operates on the same principle as the particle soot absorption photometer (PSAP), i.e., continuously measuring transmission through a filter substrate as sample air is drawn through it. The absorbing aerosol particles are collected in the filter.

The CLAP is part of the aerosol observing system (AOS).

Locations

  • Fixed
  • AMF1
  • AMF2
  • AMF3

Active Locations

Facility Name Start Date
Barrow, Alaska, new building (NAD83) at NOAA facility 2020-10-22

2022

Moffett C, M Mehra, T Barrett, M Gunsch, K Pratt, and R Sheesley. 2022. "Contemporary sources dominate carbonaceous aerosol on the North Slope of Alaska." Science of The Total Environment, 831, 154641, 10.1016/j.scitotenv.2022.154641.

2021

Ohata S, T Mori, Y Kondo, S Sharma, A Hyvärinen, E Andrews, P Tunved, E Asmi, J Backman, H Servomaa, D Veber, K Eleftheriadis, S Vratolis, R Krejci, P Zieger, M Koike, Y Kanaya, A Yoshida, N Moteki, Y Zhao, Y Tobo, J Matsushita, and N Oshima. 2021. "Estimates of mass absorption cross sections of black carbon for filter-based absorption photometers in the Arctic." Atmospheric Measurement Techniques, 14(10), 10.5194/amt-14-6723-2021.

2020

Li H, G McMeeking, and A May. 2020. "Development of a new correction algorithm applicable to any filter-based absorption photometer." Atmospheric Measurement Techniques, 13(5), 10.5194/amt-13-2865-2020.

2019

Jensen M, E Bruning, D Collins, A Fridlind, P Kollias, C Kuang, D Rosenfeld, A Ryzhkov, A Varble, SD Brooks, S Collis, E Defer, J Fan, J Flynn, S Giangrande, R Griffin, J Hu, R Jackson, M Kumjian, T Logan, T Matsui, G McFarquhar, C Nowotarski, J Quaas, M Oue, R Sheesley, J Snyder, P Stier, S Usenko, S van den Heever, M van Lier Walqui, Y Wang, Y Xu, and G Zhang. 2019. Tracking Aerosol Convection Interactions ExpeRiment (TRACER) Science Plan. Ed. by Robert Stafford, DOE/SC-ARM-19-017.

Andrews E, P Sheridan, J Ogren, D Hageman, A Jefferson, J Wendell, A Alástuey, L Alados-Arboledas, M Bergin, M Ealo, A Hallar, A Hoffer, I Kalapov, M Keywood, J Kim, S Kim, F Kolonjari, C Labuschagne, N Lin, A Macdonald, O Mayol-Bracero, I McCubbin, M Pandolfi, F Reisen, S Sharma, J Sherman, M Sorribas, and J Sun. 2019. "Overview of the NOAA/ESRL Federated Aerosol Network." Bulletin of the American Meteorological Society, 100(1), 10.1175/BAMS-D-17-0175.1.


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