Krish Vijayaraghavan has more than 20 years of experience in air quality modeling and analysis, with additional expertise in linkages with watershed models and emissions models and inputs to human health and ecological risk assessments. He has experience with a wide array of air quality models, from local to global scales, and puff and plume-in-grid models. Krish has directed modeling studies of photochemical air pollution (ozone, particulate matter), exposure to air toxics, such as mercury, arsenic, and selenium, and atmospheric deposition of sulfur, nitrogen, mercury, and other gases. He has coordinated the National Environmental Policy Act (NEPA) assessments of hazardous and criteria air pollutants and precursors for a large power plant-coal mine project. He has assisted the US Bureau of Land Management prepare regional management plans and environmental impact statements for NEPA for criteria and hazardous air pollutants and greenhouse gases (GHGs) releases from oil and natural gas and mining operations in multiple states in the US. He has investigated the impact of fuel and technology changes in onroad and nonroad sources and the effect of new vehicle regulations on ozone and PM. He has directed numerous modeling studies of coal-fired power plants on mercury and acidic deposition, ozone, PM, and the effect of control technologies. He also has examined the relation between global climate change and regional pollution using satellite data and models.
Krish has published about 40 papers in scientific journals, conducted training for state regulators, and provided expert witness testimony on mercury deposition. He served as chair for technical sessions at the Energy and Environment Conference, and was recognized by the Community Modeling and Analysis System center in the US.