CABOTS 2016 – California Baseline Ozone Transport Study

This page last reviewed May 25, 2017


CABOTS (California Baseline Ozone Transport Study) 2016 is a major air quality study in California conducted by San Jose State University (SJSU), the National Oceanic and Atmospheric Administration (NOAA), the National Aeronautic and Space Administration (NASA-Ames), the University of California Davis (UCD), and the California Air Resources Board (ARB). The field study took place from mid-May to mid-August of 2016. During this period Professor Sen Chiao of SJSU launched near daily ozone sondes at Bodega. The ozone sondes provided daily ozone vertical profiles which will be compared with global models. To provide ozone profiles up to 6 km above ground level in the San Joaquin Valley at the Visalia Airport, NOAA deployed an ozone light detection and ranging instrument (lidar) for two 3 weeks periods, May 29 to June 18, 2016-“Spring” and July 18 to August 7, 2016-“Summer.” Two NASA aircraft and two additional small planes were to collect aloft data to help characterize ozone above the San Joaquin Valley and Bay Area. The study will address important scientific questions on transport and air quality in California. The air quality and meteorological data collected during CABOTS will improve ARB’s modeling of criteria air pollutants and precursors used in SIP development and our understanding of the atmospheric formation of ozone.

Below you will find background documents from the planning stage, the field study phase, and the data analysis phase of CABOTS.

Workshop Presentations

Data Analysis Conference April 19, 2017

July 2016

ozone monitoring vehicle
NOAA TOLNET Ozone Lidar at Visalia Airport

Questions related to this project can be directed to:
Dr. Jin Xu
Research Division
California Air Resources Board
P.O. Box 2815
Sacramento, CA 95812
(916) 327-1511