🔥 A UC Berkeley-led study published in Science Advances on February 27, 2026, suggests northern wildfires may be more damaging to the climate than previously estimated. Researchers found that current models, often based on lower-latitude fires and visible flames, fail to fully account for carbon released from smoldering organic soils (peat) which can release ancient carbon accumulated over centuries.

🌲 The study reconstructed emissions from 324 Swedish wildfires in 2018, comparing detailed field measurements with global fire emissions models. They discovered significant inaccuracies, with some underground carbon stores underestimated by up to a factor of 14 in regions with low-intensity fires that burned into deep soil layers.

🌍 Lead author Johan Eckdahl stated that major models may be severely underestimating the impact of recent extreme fire seasons in regions like Siberia and Canada, which have larger peatland areas than Sweden.

#Wildfire #ClimateChange #CarbonEmissions

🔥 A UC Davis study found California's wildfire-driven deforestation has accelerated over the past three decades (1991-2023), with conifer forest losses increasing exponentially, particularly on USDA Forest Service and private lands.

🌲 Between 2001-2023, California's deforestation rate was between 0.25% and 0.47% annually, significantly higher than the global average of 0.15%. Reforestation efforts are not keeping pace.

📈 Reforestation needs surged after 2020, with California losing 6%-11% of its conifer forests. Only about 8% of high-priority and less than 3% of acute-priority reforestation areas on Forest Service lands were addressed during the study period.

#Wildfire #Deforestation #CaliforniaForests

🔥 Wildfires in the western U.S. have decreased by about 28% over the past 30 years, largely due to a 40% drop in accidental human ignitions.

🔥 However, the wildfires that do occur are becoming more severe, burning larger areas and causing increased damage, attributed to human-driven climate change making regions hotter and drier.

🔥 A study in Earth's Future (April 30, 2026) found that areas with higher population density tend to have fewer fires, possibly due to increased prevention efforts, a phenomenon termed "pyric transition."

🔥 Despite a reduction in fire frequency (down from 25,000 in 1992 to 18,000 in 2020), the land burned each year increased by 4% between 1992 and 2020, with major fires like those in California, Oregon, and Washington in 2020 burning over 9 million acres.

#Wildfire #ClimateChange #USWest

🔥 Climate change could significantly increase wildfire frequency in Yosemite, Sequoia, Kings Canyon, and Lassen Volcanic National Parks, potentially doubling or tripling it under high emissions scenarios.

🌲 New UC Berkeley-led research uses climate change reference conditions to help park managers proactively target natural fires, reducing understory fuels and thus wildfire risks.

📊 The study, published in Environmental Research Letters today, found that since 1895, temperatures in these parks have risen more than the global average, impacting vegetation and increasing fire risk.

#ClimateChange #Wildfire #NationalParks