July 15, 2021 In 2000, atmospheric scientists from the U.S. Naval Research Laboratory (NRL) first reported that smoke plumes from intense wildfires could spawn towering thunderstorms that channeled smoke as high or higher than the cruising altitude of jets. These pyrocumulonimbus, or pyroCb, events wowed scientists at the time. Prior to that discovery, […]

The relationships among CAW, heatwaves, wildfires, and pollution. Anomalous anticyclones characterize the atmospheric circulation that develops concomitantly over the three remote regions around the summertime Arctic (July and August). The authors named it the circum-Arctic wave (CAW) pattern. These anticyclones induce warm and dry conditions from the surface to the […]

Analysis of the first super slow motion recordings of upward flashes suggests a possible explanation for the formation of luminous structures after electrical discharges split in the atmosphere. Credit: INPE Analysis of the first super slow motion recordings of upward flashes suggests a possible explanation for the formation of luminous […]

The Finnish Meteorological Institute’s observation station used in the study, Pallas National Park, Arctic Finland. Credit: Jeff Welker The April snow falling on fruit blossoms in Europe these days may be directly connected to the loss of the sea ice in the Barents Sea in the Arctic. That was certainly […]

March 23, 2021 The western United States is currently experiencing moderate to severe drought, and it is expected to worsen in upcoming months. Almost half of the United States is currently experiencing some level of drought, and it is expected to worsen in upcoming months. Experts say the dry conditions could put […]

March 1, 2007, March 14, 2011, February 28, 2021 On March 11, 2011, a magnitude 9.1 earthquake jolted the seafloor about 70 kilometers (45 miles) offshore of Japan’s Tohoku region. It was the largest quake recorded in Japan and the fourth largest in the world since seismic recording began around […]

In mid-January 2021, the Pacific Northwest of North America was soaked by several episodes of heavy rainfall, leading to widespread flooding and landslides. In mid-January 2021, the Pacific Northwest of North America was soaked by several episodes of heavy rainfall, leading to widespread flooding and landslides. The culprit was a […]