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Showing posts from July, 2017

Wildfires

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Levels of carbon dioxide (CO2) in the atmosphere are accelerating , even though emissions from fossil fuel burning have remained virtually the same over the past few years. One of the reason behind this is accelerating emissions from wildfires as temperatures are rising. Wildfires in Nevada caused CO2 to reach levels as high as 742 ppm on July 12, 2017 (green circle image on the right). Global warming is greatly increasing the chance for what was previously seen as an extreme weather event to occur, such as a combination of droughts and storms. Heat waves and droughts can cause much vegetation to be in a bad condition, while high temperatures can come with strong winds, storms and lightning. Wildfires cause a range of emissions, including CO2, soot, methane and carbon monoxide (CO). In Nevada, CO levels were as high as 30.43 ppm (green circle image right). Above satellite image below shows the smoke plumes and the charred area. The google maps image below further shows where the fires

Rain Over Arctic Ocean

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It's raining over the Arctic Ocean and the rain is devastating the sea ice. What are the conditions that led to this? As has been known for a long time, energy is added to Earth due to emissions by people and this translates into a warmer troposphere with more water vapor, warmer oceans and stronger winds. Warming is hitting the Arctic particularly hard, due to numerous feedbacks , as illustrated by the sea surface temperature anomalies image on the right. On July 6, 2017, cyclonic winds lined up to create a 'perfect storm'. As a result, an Atmospheric River of moisture was driven through Bering Strait into the Arctic Ocean, as shown on the images below. On July 6, 2017, 1500 UTC, winds in Bering Strait were as high as 58 km/h (36 mph) at surface level (green circle on above image left), and as high as 82 km/h (51 mph) at 850 mb (green circle on above image right). On July 6, 2017, surface temperatures of the air in Bering Strait were as high as 8.1°C (46.5°F) (green circle