Sebastian W. Hoch
Research Associate Professor
Office: 485 INSCC
Phone: +1 (801) 581-7094
University of Utah
Department of Atmospheric Sciences
135 S 1460 E, Rm 819
Salt Lake City, UT 84112-0110
|Salt Lake Basin
Cold-Air Pool Exchange Processes Study
Salt Lake Basin Cold-Air Pool Exchange Process Study was
sponsored by the National Science Foundation (NSF) and
the Utah Department of Air Quality. The goal of the
study is to investigate meteorological processes
responsible for mixing and transport in wintertime
cold-air pools (PCAPs). The project augments the NOAA
aircraft-based Utah Wintertime Fine Particulate Study (UWFPS)
by adding meteorological observations to the chemistry
dataset collected during January and February 2017.
meteorological and air chemistry equipment and remote
sensing equipment (LiDAR and SoDARs) were strategically
deployed to investigate the role of thermally driven
canyon flows and of the lake breeze from the Great Salt
Lake in modulating concentrations of particulate
pollution (PM2.5) and ozone (O3).
|Salt Lake Valley
PM2.5 Pollution Study
The Salt Lake Valley PM2.5 Pollution Study is a multi-university study sponsored by the the Utah Department of Air Quality. The goal of the study is to investigate the reactive pathways for the formation of secondary particulate pollutants during persistent wintertime cold air pool episodes
role is to capture the meteorological conditions during
the air pollution episodes. Instrumentation ranging from
small inexpensive temperature dataloggers deployed along
a height-transect from the valley floor up the basin
sidewall, to sophisticated remote-sensing equipment such
as a Doppler Wind LiDAR, are used to monitor the spatial
and temporal variation of the atmospheric conditions of
the valley cold pools.
Program (MATERHORN) is a
multidisciplinary University Research Initiative (MURI)
sponsered by the Office of Naval Research.
Goal of the project is to evaluate the predictability of atmospheric flows in complex terrain using state-of-the-art atmospheric models, to pin-point the model's weaknesses by comparing to a comprehensive new data-set collected during two month-long field experiments, and to then improve the models with new parameterizations.
| Bingham Canyon
The Bingham Canyon Mine Study investigates the formation and evolution of wintertime inversions within the deep open-pit Bingham Canyon Copper Mine. Observations focus on the evolution of the pseudo-vertical temperature profiles within the mine's atmosphere and the atmosphere of the adjacent Salt Lake City Valley. Ventilation of the mine's atmosphere and the role of winds aloft are evaluated from data collected with our Doppler Wind LiDAR. Funding comes from Rio Tinto / Kennecott Utah Copper.
The Persistent Cold-Air Pool Study (PCAPS) is a three-year research program funded by the National Science Foundation to investigate the processes leading to the formation, maintenance and destruction of persistent mid-winter temperature inversions (cold-air pools) that form in the Salt Lake basin.
I set up several lines of inexpensive temperature data loggers running up to sidewalls of the Salt Lake Basin to collect pseudo-vertical temperature profiles.
Visit the PCAPS web page!
Crater Experiment (METCRAX)
METCRAX was designed to study the formation and development of cold-air pools in an idealized topography - Arizona's Meteor Crater. For more information, visit the our METCRAX website and the project websites of NCARs ISFF or ISS.
METCRAX is a 3-year program financed by the US National Science Foundation.
My postdoctoral study within the project was partially (1st year) financed by the Swiss National Science Foundation, SNSF.
Special interest in the METCRAX project is to evaluate radiative effects in the evolution of inversions, such as the
Greenland Summit Experiment
The ETH Greenland Summit project was designed to study the climate of the so-called "dry snow zone" of the Greenland Ice Sheet, the area where net accumulation occurs on the ice-sheet.
My contribution to this project as a PhD student at the Institute for Atmospheric and Climate Science IACETH of the Swiss Federal Institute of Technology (ETH) was to evaluate the surface energy balance and to study the divergence of longwave radiation in the stably stratified boundary layer.
An brief personal overview of the project can be found here.
My doctoral thesis can be downloaded at the ETH E-collection.