Welcome to the home page of the 2015 Great Salt Lake Summer Ozone Study

For an overview of the project, check out the slides from a department seminar given by Brian Blaylock and Ansley Long and read the article published in Atmospheric Science Letters titled Summer Ozone Concentrations in the Vicinity of the Great Salt Lake.

This web site provides access to some of the air quality and meteorological observations collected as part of the summer project, which took place from 1 June - 31 August 2015. Many in-situ and mobile platforms were used to collect ozone observations (full list available here). The in-situ sites, depicted as square markers on the map, recorded observations for the entire study period. Mobile platforms, which include observations from vehicles, light rail trains, and the KSL5 news helicopter are available at various times throughout the project (displayed as circular markers). This project had three Intensive Observation Periods (IOPs) where additional observations were taken by other entities. These periods were:

IOP 1: 17-18 June 2015
IOP 2: 14-16 July 2015
IOP 3: 10-12 August 2015
Mini-IOP 4: 16-24 August 2015

The collected data can be accessed by a series of interactive map and graphical products on this web page, including the map below. To choose a different time period or different variables for the map, please use the following options.

Final Observation Time: Year: 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 Month: 01 02 03 04 05 06 07 08 09 10 11 12 Day: 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Hour: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Minute: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59

Primary Options: Timezone: Local UTC Period: 30 min 1 hr 2 hr 3 hr 6 hr 12 hr 1 day Variable: Ozone Concentration PM2.5 Concentration PM10 Concentration Temperature Relative Humidity Battery Voltage Train Top Temperature Train Top Relative Humidity Opacity by Time: On Off



Map Layer Controls: Observations now loading...

Diamond markers represent data from available freight trucks. Circle markers represent data from Utah Transportation Authority TRAX light rail cars and other mobile sources. Square markers are observations collected from deployed in-situ stations. Marker color is based on observation value according to the legend on the map.

Weather observations from of the MesoWest API Services can be plotted by clicking the "Load Weather Obs" button above the map. Observations will be plotted in wind barb format similar to MesoWest. Red numbers indicate temperature in degrees Celsius. Green numbers indicate relative humidity. Wind barbs show wind speed in meters per second (one full barb is 5 meters per second). Wind gust values larger than 5 meters per second are also shown in yellow if available.

The table below provides the last pm2.5 concentration observation collected from each platform available on the map for the time period selected, with links to time series graphs available as well. Rows can be sorted by clicking on the table headers.