This is art: HRRR temps

Been working with WRF for my master's research and I thought this was really pretty...surface temperatures of the western states on April 20, 2015 at 6:00 PM mountain time. There are no state lines, but you can locate California's hot Central Valley (orange/red), the Snake River plane of Idaho (yellow), the cool Rocky Mountains (magenta). Can you pick out where the Great Salt Lake is?

Dusty Day

This morning a passing cold front kicked up a lot of dust. This is the PM 2.5 concentration at the Mt. Met. Lab at the University of Utah.

A look at the NAA camera shows just how dusty it got. This morning was clear...

Then the dust blew in around 10:00 AM

Then you couldn't see the mountains 

Looking at the MesoWest observations at 11:05 shows winds gusting in the 40s from the northwest. Pretty wild.

IOP 2 Operations Summary

Great Salt Lake Summer Ozone Study (draft for grad news)

Clean air is important to our respiratory health. Unfortunately, some areas in Utah often observe unhealthy levels of ozone pollution. While ozone occurs naturally in the upper atmosphere and absorbs harmful ultraviolet radiation, smog-forming ozone created near the surface by other pollutants in the presence of sunlight poses a danger to human’s respiratory health.

This summer a team of atmospheric science students and professors at the University of Utah, Weber State, and Utah State worked together with Utah’s Division of Air Quality to understand how the Great Salt Lake influences ozone concentrations in Northern Utah. The purpose of the Great Salt Lake Summer Ozone Study is to better understand the generation and transport of ozone pollution in northern Utah, particularly areas around the Great Salt Lake.

To accomplish this, graduate and undergraduate students at the University of Utah participated in three intensive observation periods in which ozone levels and weather conditions were measured around the lake. Ozone monitors are installed on a UTA TRAX train, the KSL helicopter, and over twenty-five stationary sites which collected ozone and weather information all summer. Other mobile observations were made from trucks and the University’s “Nerdmobile” while driving routes around the Great Salt Lake. Preliminary analysis of the data collected has already shown interesting trends in ozone concentration around the lake. With this many observations researchers can understand how ozone concentrations change over a day and where the highest levels of ozone occur. This new knowledge will be used to improve air quality forecasts.

More information about the Great Salt Lake Summer Ozone Study can be found on the project’s website at http://meso2.chpc.utah.edu/gslso3s/. Current air quality forecasts issued by the Division of Air Quality can be found at http://air.utah.gov/forecast.php.

Good air quality next few days

Several moist weather disturbances passing through Utah this week will stir the air up enough to keep our ozone pollution at healthy levels this week in most areas. Look at the most current air quality forecasts here: http://air.utah.gov/forecast.php?id=slc

This morning has been rainy with tropical moisture coming up from the south west as remnants of a hurricane move into the states. The HRRR model suggests these widespread showers pass the Wasatch Range by the afternoon. The wet ground will keep our temperatures cooler than usual today with the cloud cover and as more afternoon heating goes to the latent heating by evaporating water rather than heating the air. Below shows the modeled radar reflectivity for 2:00 PM today.