野火代表了火灾致命破坏性的极端情况。每年似乎都有更多的野火，而世界各地竟然比以往任何时候都更大，更致命的野火。野火主导了对火灾最极端后果的公众感知。这回顾2020将突出一些关于BigredGuide.com发布的野火的一些文章，其中包含全长原始文章的链接。美国西方西方野火季节开始慢于去年。在本赛季的上半年，北极野火达到了新的水平，特别是在阿拉斯加和西伯利亚。根据国家环境信息的统计，西方燃烧野火燃烧野火的野火杀死了160人，并在过去两年中造成了400亿美元的损害。这种趋势朝着更大的火灾燃烧更多的英亩 - 特别是在温暖的年份。2020年初，澳大利亚是野火灾难的震中。持续的热量和干旱加剧了野火，每澳大利亚州都有火灾，虽然新的南威尔士州遭遇最难的袭击。 Strong winds have spread smoke and fire rapidly and led to fatalities. Big cities like Melbourne and Sydney have been affected; large fires have damaged homes in the outer suburbs and smoke has destroyed air quality in urban areas. Whole towns have been engulfed in flames. Active wildfire season Another cause of recent wildfires was lightning with more than 10,000 lightning strikes sparking 376 fires In the context of wildfires, even seemingly minor events can have a very large impact. For example, an explosion of blue-colored smoke on Sept. 5, 2020, in Yucalpa, California, was the beginning of a large wildfire in El Dorado Ranch Park. The pyrotechnic device was essentially a smoke bomb designed to send plumes of pink or blue smoke rising into the air, designating the gender of an expected baby. Another cause of recent wildfires was lightning with more than 10,000 lightning strikes sparking 376 fires on Aug 16 and 17, 2020. The global pandemic presented complications for firefighters during what will the active wildfire season. Firefighting manpower could be diminished by the pandemic; training sessions have been canceled, postponed, or conducted remotely. And travel risks undermine the traditional approach of calling on firefighters from throughout the country or around the world to help fight the wildfires. Addressing forest management Social distancing is at odds with the teamwork and camaraderie that characterize firefighting units. Communal basecamps where everyone eats and sleeps together are unworkable during the pandemic. Instead, smaller camps are the rule, and packaged meals are delivered to each camp. Smaller teams reduce the need for widespread quarantine if someone tests positive for the novel coronavirus. Drones are a tool to address forest management and wildfire prevention. Drones are finding multiple uses when it comes to fighting and preventing wildfires. One application is to drop self-igniting ‘dragon eggs’ that spark smaller fires to trim back overgrown forests and help prevent more destructive megafires. The dragon egg system is made up of self-igniting plastic spheres – about the size of a ping-pong ball. Dragon eggs have been an industry standard for years, usually dropped from planes or helicopters. Burnable plant material Researchers are looking to apply new approaches in address the risk of wildfires The spheres are filled with potassium permanganate powder and injected with glycol as an igniter just as they are being dropped. The reaction sets the balls ablaze after about 30 seconds, which is enough time for them to bounce to the ground through a forest canopy. Researchers are looking to apply new approaches in address the risk of wildfires. They include tools such as deep learning and artificial intelligence (AI) to better understand wildfires and to control their intensity. The model could be used to reveal areas of greatest risk for wildfires. A new deep learning model uses remote sensing and satellite data to trace fuel moisture levels across 12 Western states, in effect tracking the amount of easily burnable plant material and how dry it is. Damaging impacts of wildfires Science shows clearly that the way to reduce the damaging impacts of wildfires and threats to life and property is to proactively manage ecosystems that evolved with fire. This means reintroducing fire in the right ways and places combined with mimicking the effects of fire on forest structure through mechanical treatments. “Rocky Mountain Research Station's Fire, Fuel, and Smoke Science Program (RMRS) focuses on the science of risk management from ways that they can treat fuels and mitigate risks to helping communities assess and mitigate risk and be more resilient,” says Thomas C. Dzomba, Deputy Program Manager and Director of the Fire Modeling Institute. Understanding the underlying causes of wildfires enables us to control them better over the long haul. Enhancing fire science With a primary goal of enhancing fire science, the lab also impacts operational fire response One element is climate change, which has created conditions prone to wildfires by increasing heat, changing rain and snow patterns, and shifting plant communities. But there are also other contributing factors in the growing scale and intensity of wildfires. One is the condition of the forests in Australia, California, and other areas where the incidence of wildfires has increased. In California, for example, it is well known that the forests are unhealthy and in need of more prescribed burns and other thinning efforts. On the front line of turning data into useful information to advance fire science is the WIFIRE Lab at the University of California San Diego. The WIFIRE lab grew out of a project funded by the National Science Foundation (NSF). With a primary goal of enhancing fire science, the lab also impacts operational fire response, increasingly in real time. Wildfire risk monitoring The tragic Camp Fire in November 2018, which burned for 17 days in Butte County, near the city of Paradise, Calif., has prompted research to improve risk management and monitoring of wildfires in the future. The vision of the research is ‘a computational platform for multi-level wildfire risk assessment.’ The researchers seek to redefine wildfire risk monitoring and management to provide a platform that can be used by wildfire managers, emergency responders and utility companies to plan for, respond to, and mitigate the risk of wildfires. In Australia, new resources are addressing the growth of wildfires. Preventing and controlling wildfires Andrew and Nicola Forrest have committed 50 million Australian dollars (US$35 million) to the Fire and Flood Resilience initiative through Minderoo Foundation, with a goal of raising an additional 450 million (US$320 million) in direct or in-kind support over the life of the program. The goal of the ambitious investment is to make Australia the pioneer in fire and flood resistance by the year 2025 The goal of the ambitious investment is to make Australia the pioneer in fire and flood resistance by the year 2025. It is an audacious vision that requires an innovative approach, and the organization takes inspiration from the U.S. Apollo mission of the 1960s. In effect, it will be a ‘moonshot’ to advance the cause of preventing and controlling wildfires. Specifically, the first mission, Fire Shield, seeks to ensure no dangerous bushfire in Australia will burn longer than an hour by 2025. Local fire departments The biggest risk of property damage and injury from wildfires comes at the wildland-urban interface (WUI), which is defined as areas where structures and the built environment begin to intermingle with wildland vegetation. More and more such areas are being created as humans move near wildland areas to take advantage of their natural beauty and privacy. The ‘Ready, Set, Go! (RSG!)’ Program works to increase engagement by local fire departments with residents that live in areas at risk of wildland fires. A program of the International Association of Fire Chiefs (IAFC), ‘Ready, Set, Go!’ offers the tools and resources for fire departments to provide more understanding of the risk of wildland fires and the actions residents should take to reduce the risk.