1. Global warming and changes in risk of concurrent climate extremes: Insights from the 2014 California drought;AghaKouchak;Geophys. Res. Lett.,2014
2. Increased interannual precipitation extremes over California under climate change;Berg;J. Clim.,2015
3. CAL FIRE 2015 Cal Fire news release http://cdfdata.fire.ca.gov/pub/cdf/images/incidentfile1221_1809.pdf
4. California Department of Water Resources 2015 Water year 2015 ends as California's warmest ever; many hope for drought-busting El Niño in 2016 http://www.water.ca.gov/news/newsreleases/2015/092915elnino.pdf
5. Capital Public Radio 2015 Cal Fire says fire conditions in 2015 is worst on record http://www.capradio.org/articles/2015/05/04/cal-fire-says-fire-conditions-in-2015-is-worst-on-record