Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.
DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.
These measurements were made as part of the Alaskan Layered Pollution And Chemical Analysis (ALPACA)-2022 field study (https://alpaca.community.uaf.edu/alpaca-field-study/), which investigated air pollution under dark and cold conditions in Fairbanks, Alaska in January and February, 2022. This data set includes aerosol measurements (Number concentration above 7 nanometer (nm), number size distribution for mobility diameters between 8 and 1500 nm and optical diameters between 186 and 3370 nm, light absorption coefficients at wavelengths of 450, 525 and 624 nm), trace gas measurements (Carbon monoxide (CO) and ozone (O3)) and meteorological measurements (Barometric pressure, temperature, relative humidity, wind speed and direction and four-component radiation fluxes). Measurements were performed at the University of Alaska (UAF) Farm site, a suburban area of Fairbanks (64.853°N, 147.859°W, 138 meter above sea level). The UAF Farm site was the location of vertical measurements of the layered pollution. The current dataset represents a ground-based reference for the vertical measurements.
Michael Lehning, Dylan Stewart Reynolds, Michael Haugeneder, Océane Françoise Madeleine Hames
Julia Schmale, Jakob Boyd Pernov