震驚！美國拉斯維加斯被洪水吞噬！城市癱瘓！車輛被沖走！沙漠邊城海洋！究竟原因為何？

震驚！美國拉斯維加斯被洪水吞噬！城市癱瘓！車輛被沖走！沙漠邊城海洋！究竟原因為何？

Today, we will use a scientific perspective to explore the complex truth behind meteorological events. According to the latest news from the US Fox News website, severe flooding threats expanded to Las Vegas and Phoenix on February 6 as high-altitude cold air entered California in the southwestern United States. A shift

From widespread rain over the past few days to scattered showers, torrential rains and thunderstorms has battered parts of southeastern California, southern Nevada and Arizona. Floods are pouring out of Las Vegas Strip hotel parking lots. Video of an exaggerated desert turning into a flooded ocean went viral on social media. Rare

Footage left people stunned. Las Vegas, home of the Super Bowl, is facing the same threat. The San Francisco 49ers and Kansas City are facing the same threat. Thousands of people will be heading to Sin City Las Vegas ahead of Chiefs showdown The current Pacific Ocean severe weather system

Continues to bring heavy rain and snow to Nevada this week Thank you for liking, commenting, subscribing and turning on Little bell , we update every day . The Los Angeles Fire Department stated that it has received 130 reports of flooding, 49 reports of landslides and multiple building fires,

And has mobilized a total of 1,000 firefighters from other counties to rescue. A 41-year-old man was killed by a tree that collapsed in the backyard of his home. The tree fell down and was sent to the hospital. Rescue efforts were unsuccessful. Los Angeles declared a state of emergency and opened emergency shelters.

Residents were urged to comply with evacuation orders. More than 160 millimeters of rain fell in the area in the past 24 hours . Cars and people were swept away by floods. Flood zones were filled with mud near Mount Hollywood. Rocks damaged many houses and fire fighters rescued 16 people.

Heavy rainfall in Southern California caused floods and mudslides . 307 mudslides were reported, causing very serious impact and damage! Multiple structures damaged and multiple high-water rescues. Los Angeles declares a local emergency . Flood watches are ongoing in California’s Mojave Desert and northern Arizona’s Northwest Desert, including Death Valley.

The flood watch extends east into Arizona. The National Oceanic and Atmospheric Administration’s Weather Prediction Center in the south-central region, including the Phoenix area , said between 1 and 2 inches of rain fell in the flood watch area, and up to 3 inches in the mountains. Exaggerated amounts were recorded at Harry

Reid International Airport in Las Vegas. 0.37 inches set a single-day rainfall record. In addition, a severe avalanche occurred northwest of Las Vegas. As cold air aloft moved into the southwestern United States, precipitation in California shifted from the widespread rain of the past few days to heavy downpours and thunderstorms

Caused by these storms. There is a serious risk of damage and life-threatening flooding. In addition , there is enough instability and rotation in the atmosphere for these storms to create a serious tornado threat. In recent years , severe storms and severe flooding have occurred frequently in many regions around the world,

Causing great harm to the lives and property of local residents. The reasons for the extremely frequent occurrence of storms and floods this year due to huge threats are complex , including the impact of climate change and related to the natural climate characteristics of various regions . Specifically

, there are several aspects that are the main reasons for the frequent occurrence of storms and floods around the world this year : First, global change Warming leads to an increase in climate extreme events. Due to the increase in greenhouse gas emissions, global temperatures continue to rise. The frequency and intensity of

Tropical cyclones, heavy rains, and floods in various regions are also increasing . High temperatures will increase water vapor in the atmosphere, creating conditions for heavy rainfall and giving more hurricanes. Energy Global land and ocean surface temperatures have increased abnormally in the first half of this year. Global

Temperatures have increased by nearly 1.2°C compared to pre-industrial levels. This has provided favorable conditions for the occurrence of extreme weather events in various places. Secondly, the background climate feature is that storm-prone areas have been abnormal this year. Active areas such as the North Atlantic, the Northeast Pacific

, and the South China Sea are inherently storm-prone areas. This year , more hurricanes are generated in these areas. The Caribbean, Gulf of Mexico, Philippine Sea and other places have fixed hurricane seasons every year. This year, these areas have experienced hurricanes. The abnormal increase in the number of

Storms in the season is related to changes in background climate factors such as the increase in local ocean heat content and air pressure configuration, which is conducive to the development of storms . It is also affected by specific interdecadal oscillations, such as the current hot phase of the El Niño event.

This will The equatorial Pacific sea temperature rises and convection strengthens, which in turn affects the global circulation and stimulates the occurrence of extreme weather in various places. The Indian Ocean Dipole phenomenon may also contribute to the El Niño effect this year , making its impact on the global weather system more significant.

The interdecadal oscillation has an impact on the global weather system. The weather in certain years has a deterministic impact. This year is in a sensitive period for such oscillations. More importantly, the impact of local weather system changes, such as the abnormally strong and westward direction of the western Pacific subtropical high,

Has caused southern China to continue to experience typhoons that hit eastern Africa . The intensity of the quasi-steady low pressure belt has increased, bringing more water vapor to Asia, affecting the monsoon trough. The monsoon low pressure in the Indian Ocean is also extremely active,

Bringing abundant precipitation to the Indian Peninsula and Southeast Asia. Therefore, some storms and floods are also caused by changes in regional weather systems. What cannot be ignored is the impact of human activities. Urbanization has increased surface runoff and flood risks. Deforestation has destroyed the regulatory capacity of the ecosystem.

Overuse of land has reduced the water-holding capacity of the soil. In addition, large amounts of soot and debris generated by volcanic eruptions and forest fires have also Human activities that can influence climate and induce abnormal weather have become one of the important factors affecting extreme weather events. In recent years

, flood disasters have occurred frequently around the world. First, under the influence of the summer monsoon , heavy rainfall in the mountainous areas of northwest India and Pakistan has caused frequent flash floods and mudslides. In the low-lying areas of the southeast, flooding occurs every monsoon season, causing serious losses

. Secondly, in the Mediterranean region of Europe, the frequency of heavy rains and flash floods has increased in recent years. Northern Italy, southern France, eastern Spain and other places have experienced relatively serious flooding events in medium and large reservoirs in Europe. The multiple impacts of insufficient water storage and heightened landslide risks

Have significantly increased flood risks in the region. Even more serious are low-lying towns and agricultural areas in countries such as Iran, Turkey, Yemen, and Sudan in the Middle East and North Africa, which frequently experience flooding in some cities. Historical flood records continue to be broken.

What cannot be ignored is that the southern United States in North America has suffered multiple hurricanes, heavy rains and floods that have broken historical flood records in the past decade . Severe flooding in central and southern Mexico is also becoming increasingly serious. At the same time, the Great Lakes of Africa

Large fluctuations in water levels in the African Great Lakes and its downstream areas have led to large-scale flooding in Rwanda, Burundi, Uganda and other countries . Floods in some tributaries of the Nile River Basin during the dry season also tend to increase in intensity.

These flood events pose a serious threat to food security in East Africa. It is worth noting that In the tropical monsoon areas of Southeast Asia and South Asia, summer storms in the western Indian Ocean and central and western Pacific and their accompanying heavy rains and floods are on the rise in Bangladesh

, Myanmar, Indonesia, Sri Lanka and other countries. Effective prevention and control of flood disasters can be carried out in many ways. First , we must strengthen climate change governance and actively carry out global actions to mitigate and adapt to climate change. Countries need to jointly implement the Paris Agreement,

Vigorously develop a green and low-carbon economy , achieve carbon neutrality as soon as possible, and increase investment in adaptation , especially strengthening The construction of early warning systems improves meteorological early warning and forecasting capabilities. Secondly, optimizing urban planning improves the city’s ability to resist floods. Properly lay out urban space

And retain sufficient flood storage space such as wetlands, parks, and green spaces. Strengthen the construction of the drainage system to ensure that it can cope with extremely heavy rainfall . Adopt permeable paving, green roof rainwater collection and utilization and other measures to increase the city’s own flood storage capacity

. At the same time, increase water conservancy and hydropower Invest in infrastructure to improve the flood control engineering system. This includes the construction of main projects such as reservoirs and embankments to regulate and store floods , as well as auxiliary projects such as river management, reclamation and reclamation of embankments

. It is also necessary to establish and improve flood control material reserves and emergency plan systems. It is more important to improve the resilience of flood prevention and disaster reduction. It is to restore the hydrological regulation function of the natural ecosystem. Vigorously promote the protection of natural forests, restore degraded wetlands, afforestation

, rationally reclaim some farmland, and restore its flood storage function . Use natural means to enhance the comprehensive regulation and storage capacity of the watershed. Don’t ignore it, and improve the public’s awareness of disaster prevention. Popularize disaster prevention knowledge through publicity, education, exercises and analogies

To enable the public to understand flood prevention measures and master basic self-rescue knowledge. At the same time, strengthen community emergency management capacity building, establish a complete risk assessment and monitoring and early warning system, and use new technologies to carry out real-time flood forecasts for prone areas . Identify potential risks in advance

And establish a flood risk assessment system to identify key prevention areas . It is worth mentioning that international cooperation should be strengthened to exchange flood control experience on a global scale. Developed countries should provide flood control technology and financial assistance to

Less developed countries . The United Nations and other agencies should also play a coordinating role. On the other hand, market mechanisms such as insurance are actively used to purchase insurance for residents and properties that may be affected by floods through government subsidies and corporate participation. This can effectively spread risks

And reduce economic losses caused by floods. More importantly, various countries should establish a complete post-disaster recovery and reconstruction mechanism. The government and humanitarian aid organizations should establish a long-term mechanism to quickly launch rescue operations in the event of a flood disaster and organize reconstruction work as soon as possible after the disaster.

One point that cannot be ignored is to increase scientific and technological innovation and actively carry out new research on flood formation mechanisms, hydrology and water resources, flood prevention and disaster reduction. Research in technology and other aspects actively transforms cutting-edge scientific and technological achievements into real productivity. In fact, countries around the world

Have accumulated a lot of valuable experience in dealing with floods , which is worthy of learning and reference. First of all , developed countries and regions have made great achievements in engineering flood control . For example, the Netherlands uses a series of sluices. and berm systems have successfully withstood floods.

Japan relies on many artificial reservoirs to adjust flood peaks. These countries have also continued to increase the intensity of updating and upgrading water conservancy facilities. Some European and American countries are also relatively successful in preventing and controlling floods through non-engineering measures

. For example, land use along the Mississippi River in the United States These practices, such as planning non-engineering comprehensive management measures for the Thames River Basin in the UK, have provided examples for other countries. Secondly developed countries are also more sophisticated in their application of smart monitoring and early warning systems.

Such systems can predict possible floods days or even a week in advance and coordinate transfers for risk avoidance and disasters. Preparatory plans can significantly reduce the loss of life and property. Some developed countries have also formed relatively complete water conservancy and hydropower data statistics systems.

Relevant government departments can make full use of these data to carry out hydrological analysis to provide support for water conservancy planning . Data sharing is also conducive to the academic community to carry out flood prevention research . In addition to the government-led prevention and control of floods,

The insurance and reinsurance industries in some countries are also relatively developed. The combination of government subsidies and commercial mechanisms can better disperse the economic losses that may be caused by floods. Some European and American countries have adopted a market-oriented approach to actively introduce social forces to jointly participate in river management

And have achieved results. This model of government and social capital cooperation with remarkable results has also provided a sample for other countries. Countries and regions such as Japan have also been relatively successful in disaster prevention education and training. In addition to school education

, relevant publicity has also been carried out through enterprises, communities and families, which has significantly improved public awareness. Awareness of disaster prevention and reduction. Some countries have formed professional disaster prevention and rescue teams and are equipped with sophisticated equipment. Once a serious flood occurs, these rescue forces can quickly go into rescue

And significantly reduce casualties . More importantly, in addition to traditional methods, some countries have also begun to try The use of cutting-edge technologies to prevent and control floods, such as drones and satellite remote sensing to monitor flood conditions and provide support for emergency rescue decisions, will play a greater role in the future

. It is worth mentioning that in addition to domestic governance, some international organizations have also It plays an important role , such as providing technical support and financial assistance for flood prevention and disaster relief in poor countries. The Transnational Rivers Commission

Is responsible for coordinating and planning flood prevention work on relevant rivers. These are valuable experiences formed in the process of preventing and controlling floods in various countries around the world. These practices can be used as a basis for other countries. Important lessons learned: Managing flood disasters

Requires governments of all countries and global cooperation to vigorously develop a green and low-carbon economy and increase the construction of water control and flood control infrastructure . At the same time, we must increase public awareness of disaster prevention and adopt various engineering and non-engineering measures to minimize the risk of flood disasters. However,

Extreme There is a close relationship between the frequency of weather events and the destruction of the natural environment and ecological imbalance . First of all, extreme weather can directly cause serious damage to the natural environment. For example, strong winds from tropical cyclones and hurricanes can cause large-scale deforestation;

Floods can change river courses. Road conditions and wetland features; drought can cause vast grasslands and forests to die, which directly changes the natural ecosystem. Secondly, reduced biodiversity triggers extreme weather. When regional biodiversity decreases, the climate resilience of the region decreases. Species loss weakens ecosystem functions.

The main manifestation is the decline in the buffering effect against extreme weather, which may lead to more frequent occurrence of extreme weather events. More importantly, over-development changes land use types and also damages surface vegetation and hydrological processes , which breaks the natural hydrological cycle path

And makes droughts and floods more likely. The destruction of the natural environment can significantly reduce the function of carbon sinks and reduce the amount of carbon sequestration, leading to more greenhouse gas emissions into the atmosphere, exacerbating global warming and making heat waves more extreme. It should be noted that

Extreme high temperatures can cause dense permafrost to melt and release more methane. and other greenhouse gases, forming a positive feedback that will enhance the warming trend and eventually induce more extreme weather. In addition, the destruction of local ecosystems will interfere with the climate system of connected areas,

Which may lead to abnormal weather patterns in surrounding areas and trigger more extreme weather. Therefore, the natural environment There is a reciprocal relationship between destruction and the increase in extreme weather. We must protect natural ecosystems to remain resilient to combat the increase in extreme weather caused by climate change.

To reduce the occurrence of extreme weather events, humans can take actions and measures from the following different aspects: First, greenhouse gas emissions should be significantly reduced and enhanced emission reduction efforts are fundamental to deal with extreme weather. We need to accelerate the transformation of the energy structure,

Significantly reduce the use of fossil fuels , and develop clean renewable energy to curb climate warming. Second, we must protect and restore ecosystems. An important way to deal with climate change is to protect and restore natural ecosystems to improve their buffering capacity against extreme weather.

For example, protecting wetlands can slow down the impact of floods. More importantly, improving prediction accuracy through the use of advanced meteorological monitoring equipment and analog technology allows society to have a better life. Make time to prepare for extreme weather. Plan urban construction rationally, arrange functional zoning to retain sufficient green space systems

And optimize infrastructure. To reduce urban waterlogging and urban heat island effect, only by attaching great importance to and taking multi-pronged responses to the extreme weather threats brought about by climate change can we ensure the long-term security and stable development of human society. Action is urgent

. Thank you for liking, leaving a message, subscribing and turning on the small bell. We The latest news from around the world will be updated every day and we will continue to explore the complex truth behind meteorological events from a scientific perspective.

震驚！美國拉斯維加斯被洪水吞噬！城市癱瘓！車輛被沖走！沙漠邊城海洋！究竟原因為何？

歡迎訂閱！Welcome to subscribe!

我們的頻道，旨在分析氣象現象，為科學研究提供資料。
倡導和推行更為科學的環保理念，預防災害，保護地球。
讓我們攜手保護環境，愛護地球，加強跨國合作，為地球的美好未來出一份力！

地理+人文+新知= 認識地球的三維新角度

每天更新影片，您的訂閱，是對我們最大的支持！

我們祝願世界和平，祝願我的觀眾們，無論您身處何方，都能幸福平安。

Welcome to our channel and welcome to subscribe.
Videos will be updated every day,
Your subscription is our greatest support!

We wish for world peace, and I wish my viewers, wherever you are, happiness and peace.

Geography + Humanities + New Knowledge = A new three-dimensional perspective on understanding the earth