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Welcome everyone to our http://Climate.gov tweet chat with three experts on #smoke and #wildfires taking part in the @NOAA+@NASA FIREX-AQ campaign. Wondering what that is? Ask our experts! But make sure to tag your questions with #ClimateQA
But first, some introductions:pic.twitter.com/h6yr6KHXMf
Hi! I’m Shuka, a research physicist at @NOAA_ESRL. I study particles in the air and how they influence climate and air quality. I make and use measurements in “the real world" collected from ground or aircraft instruments, which is why I’m involved in the FIREX-AQ campaign.pic.twitter.com/gKxUzHowbK
Currently, I’m in the NASA DC-8 “flying laboratory” sampling #smoke from fires in the Central/SE US. We’re based out of Salina, KS for this portion of the mission. 2/3
These small fires are hard to detect via satellites and are not well accounted for in estimates of air quality in the US. We are working to better understand both how much smoke comes from these fires, and what the smoke is made of. 3/3pic.twitter.com/qoRnzpy4Zj
Expert #2: Hi! I’m Steve Brown, the primary investigator for one of the @NOAA Twin Otters (N48RF, the “Chem Otter”) during the FIREX-AQ campaign and a research chemist at @NOAA_ESRL, where I study atmospheric chemistry and regional air quality. 1/2pic.twitter.com/zQCmJp10rx
The Twin Otter is a small aircraft that can study the chemistry of wildfire smoke during day/night. Both sunlight and darkness change the composition of smoke. The Twin Otter can also fly in tight valleys that fill w/smoke overnight and where exposure to people is greatest. 2/2pic.twitter.com/WpFQ6qonOD
How does wildfire smoke interact with existing air quality issues? Also are there differences in the smoke and air quality impacts between prescribed burns and other fires? #ClimateQA
Great questions! Smoke interacts with existing air quality issues in several ways. Emissions from fires can interact with emissions from urban areas for example to increase levels of regulated secondary pollutants such as ozone and particulate matter. 1/2 #ClimateQA
#smoke from #wildwires in #California has persisted for many days after events. How does such smoke age and interact with #smog and other air pollutants from fossil fuels? Do such aged pollutants have different health impacts? #ClimateQA
We do see changes in the chemical make-up of smoke as it ages and interacts with other pollutants. However, the health effects of these different types of smoke (fresh vs. aged) are not well known. -Kelley #ClimateQA
Do old growth forests burn differently than newly planted forests? #ClimateQA
Our experts have phoned a friend, Bob Yokelson of @umontana: It depends on the type of old growth and the age of the regeneration. Generally old growth would have more dead/down woody debris and deep organic (duff) layers. 1/? #ClimateQA
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