TY - JOUR
T1 - The SALTENA Experiment
T2 - Comprehensive Observations of Aerosol Sources, Formation, and Processes in the South American Andes
AU - Bianchi, Federico
AU - Sinclair, Victoria A.
AU - Aliaga, Diego
AU - Zha, Qiaozhi
AU - Scholz, Wiebke
AU - Wu, Cheng
AU - Heikkinen, Liine
AU - Modini, Rob
AU - Partoll, Eva
AU - Velarde, Fernando
AU - Moreno, Isabel
AU - Gramlich, Yvette
AU - Huang, Wei
AU - Koenig, Alkuin Maximilian
AU - Leiminger, Markus
AU - Enroth, Joonas
AU - Peräkylä, Otso
AU - Marinoni, Angela
AU - Xuemeng, Chen
AU - Blacutt, Luis
AU - Forno, Ricardo
AU - Gutierrez, Rene
AU - Ginot, Patrick
AU - Uzu, Gaëlle
AU - Facchini, Maria Cristina
AU - Gilardoni, Stefania
AU - Gysel-Beer, Martin
AU - Cai, Runlong
AU - Petäjä, Tuukka
AU - Rinaldi, Matteo
AU - Saathoff, Harald
AU - Sellegri, Karine
AU - Worsnop, Douglas
AU - Artaxo, Paulo
AU - Hansel, Armin
AU - Kulmala, Markku
AU - Wiedensohler, Alfred
AU - Laj, Paolo
AU - Krejci, Radovan
AU - Carbone, Samara
AU - Andrade, Marcos
AU - Mohr, Claudia
N1 - Publisher Copyright:
© 2022 American Meteorological Society
PY - 2022/2
Y1 - 2022/2
N2 - This paper presents an introduction to the Southern Hemisphere High Altitude Experiment on Particle Nucleation and Growth (SALTENA). This field campaign took place between December 2017 and June 2018 (wet to dry season) at Chacaltaya (CHC), a GAW (Global Atmosphere Watch) station located at 5,240 m MSL in the Bolivian Andes. Concurrent measurements were conducted at two additional sites in El Alto (4,000 m MSL) and La Paz (3,600 m MSL). The overall goal of the campaign was to identify the sources, understand the formation mechanisms and transport, and characterize the properties of aerosol at these stations. State-of-the-art instruments were brought to the station complementing the ongoing permanent GAW measurements, to allow a comprehensive description of the chemical species of anthropogenic and biogenic origin impacting the station and contributing to new particle formation. In this overview we first provide an assessment of the complex meteorology, airmass origin, and boundary layer-free troposphere interactions during the campaign using a 6-month high-resolution Weather Research and Forecasting (WRF) simulation coupled with Flexible Particle dispersion model (FLEXPART). We then show some of the research highlights from the campaign, including (i) chemical transformation processes of anthropogenic pollution while the air masses are transported to the CHC station from the metropolitan area of La Paz-El Alto, (ii) volcanic emissions as an important source of atmospheric sulfur compounds in the region, (iii) the characterization of the compounds involved in new particle formation, and (iv) the identification of long-range-transported compounds from the Pacific or the Amazon basin. We conclude the article with a presentation of future research foci. The SALTENA dataset highlights the importance of comprehensive observations in strategic high-altitude locations, especially the undersampled Southern Hemisphere.
AB - This paper presents an introduction to the Southern Hemisphere High Altitude Experiment on Particle Nucleation and Growth (SALTENA). This field campaign took place between December 2017 and June 2018 (wet to dry season) at Chacaltaya (CHC), a GAW (Global Atmosphere Watch) station located at 5,240 m MSL in the Bolivian Andes. Concurrent measurements were conducted at two additional sites in El Alto (4,000 m MSL) and La Paz (3,600 m MSL). The overall goal of the campaign was to identify the sources, understand the formation mechanisms and transport, and characterize the properties of aerosol at these stations. State-of-the-art instruments were brought to the station complementing the ongoing permanent GAW measurements, to allow a comprehensive description of the chemical species of anthropogenic and biogenic origin impacting the station and contributing to new particle formation. In this overview we first provide an assessment of the complex meteorology, airmass origin, and boundary layer-free troposphere interactions during the campaign using a 6-month high-resolution Weather Research and Forecasting (WRF) simulation coupled with Flexible Particle dispersion model (FLEXPART). We then show some of the research highlights from the campaign, including (i) chemical transformation processes of anthropogenic pollution while the air masses are transported to the CHC station from the metropolitan area of La Paz-El Alto, (ii) volcanic emissions as an important source of atmospheric sulfur compounds in the region, (iii) the characterization of the compounds involved in new particle formation, and (iv) the identification of long-range-transported compounds from the Pacific or the Amazon basin. We conclude the article with a presentation of future research foci. The SALTENA dataset highlights the importance of comprehensive observations in strategic high-altitude locations, especially the undersampled Southern Hemisphere.
KW - Aerosol nucleation
KW - Aerosols/particulates
KW - Atmospheric composition
KW - Biosphere/atmosphere interactions
KW - Gas-to-particle conversion
KW - Measurements
UR - http://www.scopus.com/inward/record.url?scp=85119119981&partnerID=8YFLogxK
U2 - 10.1175/BAMS-D-20-0187.1
DO - 10.1175/BAMS-D-20-0187.1
M3 - Artículo
AN - SCOPUS:85119119981
VL - 103
SP - E212-E229
JO - Bulletin of the American Meteorological Society
JF - Bulletin of the American Meteorological Society
SN - 0003-0007
IS - 2
ER -