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An overview of airborne measurement in Nepal – Part 1: Vertical profile of aerosol size, number, spectral absorption, and meteorology

Singh, Ashish; Mahata, Khadak S.; Rupakheti, Maheswar; Junkermann, Wolfgang 1; Panday, Arnico K.; Lawrence, Mark G.
1 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)

Abstract:

The paper provides an overview of an airborne measurement campaign with a microlight aircraft over the Pokhara Valley region, Nepal, a metropolitan region in the central Himalayan foothills. This is the first aerial measurement in the central Himalayan foothill region, one of the polluted but relatively poorly sampled regions of the world. Conducted in two phases (in May 2016 and December 2016–January 2017), the goal of the overall campaign was to quantify the vertical distribution of aerosols over a polluted mountain valley in the Himalayan foothills, as well as to investigate the extent of regional transport of emissions into the Himalayas. This paper summarizes results from the first phase where test flights were conducted in May 2016 (pre-monsoon), with the objective of demonstrating the potential of airborne measurements in the region using a portable instrument package (size with housing case: 0.45 m × 0.25 m × 0.25 m, 15 kg) onboard an ultralight aircraft (IKARUS-C42). A total of five sampling test flights were conducted (each lasting for 1–1.5 h) in the Pokhara Valley to characterize vertical profiles of aerosol properties such as aerosol number and size distribution (0.3–2 µm), total particle concentration (>14 nm), aerosol absorption (370–950 nm), black carbon (BC), and meteorological variables. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000089231
Originalveröffentlichung
DOI: 10.5194/acp-19-245-2019
Scopus
Zitationen: 13
Web of Science
Zitationen: 12
Dimensions
Zitationen: 18
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
urn:nbn:de:swb:90-892318
KITopen-ID: 1000089231
HGF-Programm 12.02.01 (POF III, LK 01) Effects of land use and climate change
Erschienen in Atmospheric chemistry and physics
Verlag European Geosciences Union (EGU)
Band 19
Seiten 245-258
Nachgewiesen in Scopus
Dimensions
Web of Science
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