John Abatzoglou

2 months ago | onlinelibrary.wiley.com | Daniel Swain |John Abatzoglou |Christine Albano |Manuela I. Brunner

On January 7 and 8, 2025, a series of wind-driven wildfires occurred in Los Angeles County in Southern California. Two of these fires ignited in dense woody chaparral shrubland and immediately burned into adjacent populated areas–the Palisades Fire on the coastal slopes of the Santa Monica Mountains and the Eaton fire in the foothills of the San Gabriel Mountains.

Jan 8, 2025 | nature.com | Daniel Swain |Andreas F. Prein |John Abatzoglou |Christine Albano |Manuela I. Brunner |Noah S. Diffenbaugh | +2 more

AbstractHydroclimate volatility refers to sudden, large and/or frequent transitions between very dry and very wet conditions. In this Review, we examine how hydroclimate volatility is anticipated to evolve with anthropogenic warming. Using a metric of ‘hydroclimate whiplash’ based on the Standardized Precipitation Evapotranspiration Index, global-averaged subseasonal (3-month) and interannual (12-month) whiplash have increased by 31–66% and 8–31%, respectively, since the mid-twentieth century.

Dec 3, 2024 | rmets.onlinelibrary.wiley.com | Kenneth Prewitt |John Abatzoglou |Joshua H. Viers |Colleen C. Naughton

1 Introduction Coffee is among the most traded commodities globally and of critical economic importance to approximately 25 million small farmers worldwide (Ovalle-Rivera et al. 2015). Almost all the world's coffee is grown in 60 countries located in the tropics (Santana et al. 2021).

Apr 21, 2024 | nature.com | Piyush Jain |John Abatzoglou

AbstractThe 2021 North American wildfire season was marked by record breaking fire-conducive weather and widespread synchronous burning, extreme fire behaviour, smoke and evacuations. Relative to 1979–2021, the greatest number of temperature and vapor pressure deficit records were broken in 2021, and in July alone, 3.2 million hectares burned in Canada and the United States.

Oct 3, 2023 | nature.com | Daniel Swain |John Abatzoglou |Deepti Singh

AbstractEscalating wildfire activity in the western United States has accelerated adverse societal impacts. Observed increases in wildfire severity and impacts to communities have diverse anthropogenic causes—including the legacy of fire suppression policies, increased development in high-risk zones, and aridification by a warming climate.