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UHSAS

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uhsas: Ultra-High Sensitivity Aerosol Spectrometer

The Ultra-High-Sensitivity Aerosol Spectrometer (UHSAS) is an optical-scattering, laser-based aerosol particle spectrometer system for sizing particles in the 60 to 1000 nanometer (nm) range [1–3].

The instrument counts particles in up to 100 user-specified sizing bins. The instrument’s laser illuminates particles, which scatter light. The system captures the peak light signals that are generated. These signals are used for particle sizing, since the amount of light scattered correlates strongly with particle size.

The UHSAS is part of the Aerosol Observing System (AOS).

Measurements

Aerosol concentration
Aerosol particle size distribution
Particle size distribution

Locations

  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications

2018

Kassianov E, L Berg, M Pekour, J Barnard, D Chand, J Comstock, C Flynn, A Sedlacek, J Shilling, H Telg, J Tomlinson, A Zelenyuk, and J Fast. 2018. "A Closure Study of Total Scattering Using Airborne In Situ Measurements from the Winter Phase of TCAP." Atmosphere, 9(6), 10.3390/atmos9060228.

Creamean J, M Maahn, G de Boer, A McComiskey, A Sedlacek, and Y Feng. 2018. "The influence of local oil exploration and regional wildfires on summer 2015 aerosol over the North Slope of Alaska." Atmospheric Chemistry and Physics, 18(2), 10.5194/acp-18-555-2018.

2017

Pennypacker S and R Wood. 2017. "A Case Study in Low Aerosol Number Concentrations Over the Eastern North Atlantic: Implications for Pristine Conditions in the Remote Marine Boundary Layer." Journal of Geophysical Research – Atmospheres, 122(22), doi:10.1002/2017JD027493.
Research Highlight

Fast J, L Berg, C Burleyson, J Fan, Z Feng, S Hagos, M Huang, A Guenther, A Laskin, M Ovchinnikov, J Shilling, M Shrivastava, H Xiao, R Zaveri, A Zelenyuk, C Kuang, J Wang, J Smith, D Turner, and P Gentine. 2017. Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE) Field Campaign Report. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-17-014.

Bullard RL, C Kuang, J Uin, S Smith, and SR Springston. 2017. Aerosol Inlet Characterization Experiment Report. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-TR-191.

Painemal D, J Chiu, P Minnis, C Yost, X Zhou, M Cadeddu, E Eloranta, E Lewis, R Ferrare, and P Kollias. 2017. "Aerosol and cloud microphysics covariability in the northeast Pacific boundary layer estimated with ship-based and satellite remote sensing observations." Journal of Geophysical Research: Atmospheres, 122(4), 10.1002/2016JD025771.
Research Highlight

2016

Uin J. 2016. Ultra-High-Sensitivity Aerosol Spectrometer Instrument Handbook. Ed. by Robert Stafford, DOE ARM Climate Research Facility. DOE/SC-ARM-TR-163.

2015

Kassianov E, LK Berg, M Pekour, J Barnard, D Chand, C Flynn, M Ovchinnikov, A Sedlacek, B Schmid, J Shilling, J Tomlinson, and J Fast. 2015. "Airborne Aerosol in Situ Measurements during TCAP: A Closure Study of Total Scattering." Atmosphere, 6(8), 10.3390/atmos6081069.
Research Highlight

2014

Fan J, LR Leung, PJ DeMott, JM Comstock, B Singh, D Rosenfeld, JM Tomlinson, A White, KA Prather, P Minnis, JK Ayers, and Q Min. 2014. "Aerosol impacts on California winter clouds and precipitation during CalWater 2011: local pollution versus long-range transported dust." Atmospheric Chemistry and Physics, 14(1), 10.5194/acp-14-81-2014.

2013

Tomlinson J, F Mei, J Comstock, J Hubbe, B Schmid, C Song, J Shilling, D Chand, and M Pekour. 2013. Characterization of the ARM Aerial Facility Optically Based Aerosol Instrumentation. Presented at 4th Atmospheric System Research (ASR) Science Team Meeting. Potomac, MD.

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