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Airborne and Laboratory Performance Characterization of a New Aerosol and BC Instrument, the SP2-XR

出版	University of Wyoming, 2022
ISBN	9798363522567
URL	http://books.google.com.hk/books?id=jTKmzwEACAAJ&hl=&source=gbs_api

註釋The University of Wyoming’s Department of Atmospheric Science received funding through the National Science Foundation for the next generation King Air (UWKA-2) that will include a selection of current and new instruments. Part of this suite of instrumentation includes the new Single Particle Soot Photometer - Extended Range (SP2-XR) that can not only measure scattering particles but also refractory black carbon (BC) mass. As the Intergovernmental Panel on Climate Change (IPCC)’s annual climate report continues to show a large uncertainty in the effective radiative forcing of BC, the instrument was ordered to supplement the aging and scattering-only Ultra High Sensitivity Aerosol Spectrometer (UHSAS), to be able to collect BC incandescence measurements. The SP2-XR and UHSAS were flown together in the Deployable Instruments - Laramie Based - Research Test Flights - 2021 (Project Dilbert 21) as well as calibrated to verify instrument stability over time. The SP2-XR was found to have stable diameter measurements over a period of 30 months to within 20 % of the factory calibrations for both scattering and incandescence. The flight performance between the SP2-XR and UHSAS shows good agreement at higher altitudes and some divergence at lower altitudes. By plotting size distributions and combining bins of the UHSAS to match the SP2-XR, these differences were quantified to be as much as 29 % in the number distribution to 49 % in the volume distribution. Dividing the flight data and calibration data into bins shows that more calibration testing needs to be done to reconcile smaller bin sizes and larger bin sizes as this is where agreement diverges between the two instruments and calibrations.