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Dr. Sadd also uses GIS and other geospatial and statistical tools in his research to evaluate environmental problems, such as human exposure to environmental hazards, patterns or health risk and vulnerability, and environmental justice/equity, particularly as it relates to air pollution and climate change. He also works on questions related to coastal erosion, and marine habitat distribution and change.

Recent Publications

With E.S. Hall, R Morello-Frosch, M Pastor,  D Lowe-Liang, 2015, Ground-Truthing Validation to Assess the Effect of Facility Locational Error on Cumulative Impacts Screening Tools, Geography Journal, v.2015. Article ID 324683, .

With  R Morello-Frosch, Pastor M,  M Matsuoka, M Prichard, V Carter,  2013, "The Truth, the Whole Truth, and Nothing But the Ground-Truth: Methods to Advance Environmental Justice and Researcher-Community Partnerships," Health Education & Behavior, v.40. DOI: 10.1177/1090198113511816.

With Manuel Pastor and Rachel Morello-Frosch, 2013, Proactive Spatial Approaches to Environmental Disparities, EM Air and Waste Management, August 2013. p. 14-17.

With P. English, M. Richardson, R. Morello-Frosh, G. King, W. Jesdale, and M. Jerrett, 2013, Racial and Income Disparities in Relation to a Proposed Climate Change Vulnerability Screening Method for California, International Journal of  Climate Change: Impacts and Responses, 4(2), 1-18.

With Manuel Pastor, Rachel Morello-Frosch and Justin Scoggins, 2013, Risky Business: Cap-and-Trade, Public Health, and Environmental Justice, in Christopher G. Boone and Michail Fragkias, editors, Linking Ecology, Environmental Justice, and Global Environmental Change: A Framework for Urban Sustainability, Springer Publishing.

With Claisse, J. T., D. J. Pondella, II, J. P. Williams, 2012 Using GIS Mapping of the Extent of Nearshore Rocky Reefs to Estimate the Abundance and Reproductive Output of Important Fishery Species. PLoS ONE 7(1):e30290

With L. Gervacio, V. Acosta-Deprez, D. Toji, L. Chan, R. Chavarria, and M. Hey, 2012, Asian American and Pacific Islanders Policy, Practice and Community - Air Quality and the Long Beach Cambodian Community, UCLA API Nexus Journal 270701.

With Shonkoff S, Morello-Frosch R, Pastor M, Sadd JL, 2012, “The climate gap:  Environmental health and equity implications of climate change and mitigation policies in California- a review of the literature.”  Climatic Change, 109(1): 485-503.

With Morello-Frosch R, Pastor M, Prichard M, Matsuoka M, 2012,  “Citizens, Science and Data Judo:  Leveraging Secondary Data Analysis to Build a Community-Academic Collaborative for Environmental Justice in Southern California.”  In Methods for Conducting Community-Based Participatory Research in Public Health, Second Edition.  Barbara Israel, Eugenia Eng, Amy Shultz, Edith Parker, eds. University of Michigan, Jossey-Bass Press

With Manuel Pastor, Rachel Morello-Frosch and Seth Shonkoff, 2011, The Climate Gap: Environmental Health and Equity Implications of Climate Change and Mitigation Policies in California - A Review of the Literature, Climatic Change, Springer Publishing, DOI 10.1007/s10584-011-0310-7

With Manuel Pastor, Rachel Morello-Frosch, Justin Scoggins and Bill Jesdale,  2011, Playing It Safe: Assessing Cumulative Impact and Social Vulnerability through an Environmental Justice Screening Method in the South Coast Air Basin, California, International Journal of Environmental Research and Public Health, vol. 8, issue 5, pp. 1441-1459.

With R Morello-Frosch, B Jesdale and Pastor M, 2010, Ambient air pollution exposure and full-term birth weight in California, Environmental Health, 9:44.

With Shonkoff S, Morello-Frosch R, Pastor M, Sadd J, 2009 “Environmental Health and Equity Impacts from Climate Change and Mitigation Policies in California: A Review of the Literature.”  In:  Cal-EPA Climate Action Team Report. Publication # CEC-500-2009-038-D.  Available at:

With S Shonkoff, R Morello-Frosch, and Pastor M, 2009, Minding the Climate Gap: Implications of Environmental Health Inequities for Mitigation Policies in California, Environmental Justice, vol. 2, no. 4.

With Pastor M, Jr. and R Morello-Frosch, 2007, LULUs of the Field: Research and Activism in Environmental Justice, Chapter 4 in Collaborations for Social Justice: Rowman and Littlefield Publishers, Plymouth, UK; Andrew L. Barlow, editor.  

With Pastor M, Jr. and R Morello-Frosch, 2006, Breathless: Pollution, Schools, and Environmental Justice in California, Policy Studies Journal, vol. 34, no.3

With Pastor M, Jr. and R Morello-Frosch, 2005, The Air is Always Cleaner on the Other Side: Race, Space, and Air Toxics Exposures in California, Journal of Urban Affairs, vol. 27, no. 2. [Winner of the Best of Journal of Urban Affairs award for 2005].

With Pastor M, Jr. R Morello-Frosch, and M Prichard, 2005, Citizens, Science, and Data Judo: Leveraging Secondary Data Analysis to Build a Community-Academic Collaborative for Environmental Justice in Southern California, in Methods For Conducting Community-Based Participatory Research For Health, Jossey-Bass San Francisco, Barbara A. Israel, Eugenia Eng, Amy J. Schulz, and Edith A. Parker, Editors

With Pastor M, Jr. and R Morello-Frosch, 2005, Environmental Inequity in Metropolitan Los Angeles: in The Quest for Environmental Justice: Human Rights and the Politics of Pollution: Sierra Club Books, San Francisco; Robert D. Bullard, editor. 

With Pastor M, Jr. and R Morello-Frosch, 2004, Waiting to Inhale: The Demographics of Toxic Air Release Facilities in 21st Century California: Social Science Quarterly, Volume 85, Number 2, June, 2004.

With Pastor M, Jr. and R Morello-Frosch, 2004, Reading, Writing and Toxics: Children’s Health, Academic Performance, and Environmental Justice in Los Angeles: Environment & Planning C: Government and Policy, Volume 22, Number 2, p. 271 – 290.