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Wildfire - Europe PMC

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Last Updated: 24 June 2022

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Estimating WUI exposure probability to a nearby wildfire

We start by creating fire and WUI interaction zones and fire spread funnels between registered fire fronts and WUI blocks. We discovered that a random forest model can be used to estimate the WUI fire exposure probabilities with accuracy. Conclusions The results of the WUI fire risk estimation can be used to determine the likelihood of fire danger in the modeled environment.

Source link: https://europepmc.org/article/PPR/PPR507618


Effects of wildfire smoke exposure on innate immunity, metabolism, and milk production in lactating dairy cows.

PM 2. 5's physiological responses are uncertain. If daily average PM 2. 5 reached 35 g/m3 and wildfire and wind trajectory mapping revealed that the PM 2. 5 originated from active wildfires, animals were expected to be exposed to wildfire PM 2. 5. Before, during, and after exposure, milk yield was determined daily and milk components analysis was carried out daily. Before, during, and after being engulfed with hematology, blood chemistry, and blood metabolites, blood was obtained from the jugular vein. Following exposure and high blood CO 2 levels, exposed to elevated PM 2. 5 from wildfire smoke resulted in reduced milk yield during inspection and for 7 d after that last exposure and elevated blood CO 2 level persisted for 1 d following exposure. After a 3-d lag, we found a positive PM 2. 5 by THI involvement for eosinophil and basophil count as well as a negative PM 2. 5 by THI-THI interaction for red blood cell count and hemoglobin concentration. With a combination of elevated THI and PM 2. 5, Neutrophil count was also lower. We found no discernable effect of PM 2. 5 on haptoglobin concentrations. The effects of PM 2. 5 and THI on metabolism were variable on the day of exposure. On lag d 0, blood urea nitrogen was reduced with elevated combined THI and PM2. 5, but THI and PM 2. 5 had a positive effect on BUN on subsequent lag days. On lag d 0's back, THI and PM 2. 5 had a positive interacting effect on nonesterified fatty acids on lag d 0, but it resulted in a decline in circulating NEFA concentrations.

Source link: https://europepmc.org/article/MED/35717334


Investigation of COVID-19 Outbreak among Wildland Firefighters during Wildfire Response, Colorado, USA, 2020.

During August 2020-January 2021, a COVID-19 outbreak occurred among Cameron Peak Firefighters in Colorado, USA. The Cameron Peak Fire in Colorado was the first recorded wildfire in Colorado, burning from August-December 2020. The outbreak was confirmed by the state and local public health, who coordinated with wildfire response teams to minimize disease outbreaks. To visualize clusters and transmission dynamics, we used whole-genome sequencing and applied social network analysis. According to a social media survey, there was a difference between and within crews.

Source link: https://europepmc.org/article/MED/35705189


Statistical Learning and Uncommon Soil Microbiota Explain Biogeochemical Responses after Wildfire.

Soil biogeochemical processes regulate plant growth and nutrient losses that impact water quality, but soil responses after intermittent fire are difficult to quantify and predict. Here, we show that SL matched with DNA sequence and biogeochemical data reveals environmental characteristics in postfire soils, although this technique could also be applied to any biogeochemical system. IMPORTANCE SOIL biogeochemical processes are vital to plant growth and water quality, and wildfire has significantly impaired them. We developed a large environmental data set that monitors postfire changes in soil and used statistical analytics to create models that use complicated data to make predictions about biogeochemical responses to address this problem. To solve this problem, we developed a large environmental data set that records postfire changes in soil and used statistical learning to analyze soil variations. To make surprisingly accurate predictions of soil biogeochemical responses to wildfire, we show that SL depends on unusual microbiota in soil. Mechanism independent Mechanisms are mechanism independents that use SL to explain variability in a natively chaotic environmental system.

Source link: https://europepmc.org/article/MED/35703548


Short-Term Exposure to Wildfire Smoke and PM2.5 and Cognitive Performance in a Brain-Training Game: A Longitudinal Study of U.S. Adults.

PM2. 5 and concentrations are expected to rise as a result of climate change, according to wildfire smoke. Aims Our aim was to investigate the relationship between daily and sub-aes PM2. 5 and wildfire smoke exposure and adult cognitive development. Daily smoke exposure in the western United States was determined from satellite-derived estimates of smoke plume density. To find correlations between short-term exposure and attention score, we used a longitudinal repeated measures framework with linear mixed effects models. The day before, heavy smoke content was estimated at a 11. 0-point decrease in score relative to no smoke. Discussion Our findings show that PM2. 5 and wildfire smoke were associated with reduced interest in adults within hours and days of exposure, but more research is required to clarify these relationships.

Source link: https://europepmc.org/article/MED/35700064


Performance evaluation of activated carbon sorbents for indoor air purification during normal and wildfire events.

Volatile organic compounds are a significant class of indoor air pollutants and are known for their health effects. One of the best ways to minimize indoor VOC levels is to use sorbents, such as activated carbons. For a long-life of an air purification unit, the amount of activated carbon is vital to ensure a good AC filter life. To survive 30 days in a typical indoor environment, it was discovered that 50% of AC-VOC pairs tested would need about 190-370 g at low indoor VOCs levels of 0. 1-1 m3 at a minimum of 0. 1-1 bcmol/m 3 bcmol/m 3. The aim of the present report is to assist consumers and businesses in making an informed decision on the type of AC-based indoor air filters that suit their needs.

Source link: https://europepmc.org/article/MED/35709843


Targeting Sagebrush (Artemisia Spp.) Restoration Following Wildfire with Greater Sage-Grouse (Centrocercus Urophasianus) Nest Selection and Survival Models.

Unprecedented conservation efforts for sagebrush ecosystems in the western United States have been exacerbated by increasing wildfire activity that has reduced habitat for sagebrush-obligate species such as Greater Sagebrush-Grouse. However, spatial and temporal lags between slower sagebrush recovery processes and faster spatial responses of important habitat loss have impeded post-fire restoration, with spatial variability in ecosystem processes that influence resilience to disturbance and resistance to non-native invasive species, as well as geographic and temporal lags between sagebrush recovery processes and quicker population responses in the loss of critical habitat. In four scenarios, passive recovery, grazing exclusion, active restoration with seeding, and active restoration with seedling transplants were all estimated. We then applied spatial estimates of integrated nest site selection and survival models before the wildfire, immediately after the wildfire, and at 30 and 50 years post-wildfire based on each restoration scenario and observed habitat changes.

Source link: https://europepmc.org/article/MED/35687203


BLSTM based night-time wildfire detection from video.

If only spatial measurements are to be used, distinguishing fire from non-fire objects in night videos is frustrating. This makes the investigation of temporal conduct of night-time fires indispensable for classification. A BLSTM based nighttime wildfire event detection using a video algorithm is suggested, to this end. In the experiments, the proposed algorithm achieves 95. 1 percent of accuracy when tested against a large number of actual recordings of night-time wildfire incidents and 23. 7 ms per frame detection time.

Source link: https://europepmc.org/article/MED/35657931


California wildfire spread derived using VIIRS satellite observations and an object-based tracking system.

Fire pixels are clustered based on their geographical location, and can either be appended to an existing active fire object or assigned to a new one at each half-daily time step, or are randomly assigned to a new object. We can modify the attributes of each fire event, delineate the fire perimeter, and determine the active fire front within seconds after satellite data acquisition. Our approach and data stream may be useful for calibration and evaluation of fire spread models, estimation of near-real-time wildfire emissions, and as a means for prescribing initial conditions in fire forecast models.

Source link: https://europepmc.org/article/MED/35637186


COVID-19 and 5G conspiracy theories: long term observation of a digital wildfire.

The COVID-19 pandemic has drastically changed people's lives around the world, and, consequently, it has dominated world news since March 2020. Digital wildfires are common in these situations. The claim that the COVID-19 epidemic is somehow linked to the introduction of 5G wireless technologies, which caused real-world tragedy in April 2020 and beyond, is explored in this paper. We investigate the source of this digital wildfire and the subsequent spread by analyzing early social media posts. We explore how the initial idea was derived from existing resistance to wireless networks, how videos rather than tweets played a vital role in its spread, and how commercial interests could help explain some of the widespread dissemination of this particular piece of misinformation. We then discuss how the first events in the United Kingdom were repeated several months later in other countries around the world.

Source link: https://europepmc.org/article/MED/35669096

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions