scholarly journals Extreme Weather: Understanding the Science of Hurricanes, Tornadoes, Floods, Heat Waves, Snow Storms, Global Warming and Other Atmospheric Disturbances

Eos ◽  
2008 ◽  
Vol 89 (28) ◽  
pp. 258
Author(s):  
Harold Brooks
2021 ◽  
Vol 11 (1) ◽  
pp. 21
Author(s):  
Yameng Wang ◽  
Apurbo Sarkar ◽  
Ahmed Khairul Hasan ◽  
Yingdong Tian ◽  
Qian Wu ◽  
...  

In recent years, extreme weather has frequently occurred worldwide and caused significant disasters, including large-scale forest fires, rare heat waves, heavy rains, floods, and tornadoes. Those have caused unprecedented losses of human lives and property in some countries, affecting the livelihoods of many people. Climate change and natural disasters are the two hotspots of scientific research today, and there is a certain degree of correlation between the two. Although countries worldwide have long known about climate change and its threats to human existence and have been discussing countermeasures, they have still not been able to carry out concerted and practical actions. The study takes Canada as an example, and selects six representative provinces to evaluate the temporal change characteristics of extreme temperature at different sites. We use MATLAB software to perform multiple linear regression, linear fitting methods, and Pearson correlation analysis to analyze spatial changes and time-space trends. The method studies the relationship between the emergence of extreme weather and climate change and uses the evolutionary game theory to explore whether there is any contradiction between global warming and extreme local cold. The study found: (i) The maximum temperature of most provinces in Canada will be constantly higher, and the minimum temperature will be lower. Generally speaking, the average temperature of each year is slowly decreasing. (ii) The average temperature data of British Columbia (Eastern Pacific) and Quebec (West Atlantic) show that ocean temperature has a specific effect on land temperature in surrounding areas. (iii) Pearson correlation analysis shows that the emergence of extreme weather is closely related to climate change. (iv) The evolution path of the two-party game shows that global warming and the occurrence of extreme local cold are not contradictory. Under the conditions, there is a certain degree of synchronization between the two, interacting and influencing each other.


Adaptation to the challenging impacts of global warming, especially extreme weather events such as intense heat waves and hurricanes, is much more effective when the members of a community look out for each other. As we will see in the case example from the great Chicago Heat Wave of 1995, among the poor communities that were hardest hit, the neighborhoods that had social cohesion fared far better than those whose members were socially isolated. Social networking cultivates resilience, which protects vulnerable populations before, during, and after emergencies. In addition, the use of technologies is vital to address the impacts of extreme weather events; this chapter demonstrates how technologies aid in addressing heat waves and other natural hazards by providing a platform for database management, dispensing health and emergency information rapidly, and providing timely, effective medical relief.


The ongoing debate on the GW/EW link continues unabated; media and environmentalists have linked the warming of the earth’s climate (due to human-CO2 emissions) as being responsible for more extreme weather (EW) events in recent years. The IPCC (Intergovernmental Panel on Climate Change, a UN Climate Body) has identified several EW events (e.g., heat waves, droughts, floods) as being linked to the warming of the climate [1, 2, 3].


2018 ◽  
Author(s):  
Junxi Zhang ◽  
Yang Gao ◽  
Kun Luo ◽  
L. Ruby Leung ◽  
Yang Zhang ◽  
...  

Abstract. The Weather Research and Forecasting model with Chemistry (WRF/Chem) was used to study the effect of extreme weather events on ozone in US for historical (2001–2010) and future (2046–2055) periods under RCP8.5 scenario. During extreme weather events, including heat waves, atmospheric stagnation, and their compound events, ozone concentration is much higher compared to non-extreme events period. A striking enhancement of effect during compound events is revealed when heat wave and stagnation occur simultaneously and both high temperature and low wind speed promote the production of high ozone concentrations. In regions with high emissions, compound extreme events can shift the high-end tails of the probability density functions (PDFs) of ozone to even higher values to generate extreme ozone episodes. In regions with low emissions, extreme events can still increase high ozone frequency but the high-end tails of the PDFs are constrained by the low emissions. Despite large anthropogenic emission reduction projected for the future, compound events increase ozone more than the single events by 10 % to 13 %, comparable to the present, and high ozone episodes are not eliminated. Using the CMIP5 multi-model ensemble, the frequency of compound events is found to increase more dominantly compared to the increased frequency of single events in the future over the US, Europe, and China. High ozone episodes will likely continue in the future due to increases in both frequency and intensity of extreme events, despite reductions in anthropogenic emissions of its precursors. However, the latter could reduce or eliminate extreme ozone episodes, so improving projections of compound events and their impacts on extreme ozone may better constrain future projections of extreme ozone episodes that have detrimental effects on human health.


2018 ◽  
Vol 18 (1) ◽  
pp. 365-381 ◽  
Author(s):  
Geert Jan van Oldenborgh ◽  
Sjoukje Philip ◽  
Sarah Kew ◽  
Michiel van Weele ◽  
Peter Uhe ◽  
...  

Abstract. On 19 May 2016 the afternoon temperature reached 51.0 °C in Phalodi in the northwest of India – a new record for the highest observed maximum temperature in India. The previous year, a widely reported very lethal heat wave occurred in the southeast, in Andhra Pradesh and Telangana, killing thousands of people. In both cases it was widely assumed that the probability and severity of heat waves in India are increasing due to global warming, as they do in other parts of the world. However, we do not find positive trends in the highest maximum temperature of the year in most of India since the 1970s (except spurious trends due to missing data). Decadal variability cannot explain this, but both increased air pollution with aerosols blocking sunlight and increased irrigation leading to evaporative cooling have counteracted the effect of greenhouse gases up to now. Current climate models do not represent these processes well and hence cannot be used to attribute heat waves in this area. The health effects of heat are often described better by a combination of temperature and humidity, such as a heat index or wet bulb temperature. Due to the increase in humidity from irrigation and higher sea surface temperatures (SSTs), these indices have increased over the last decades even when extreme temperatures have not. The extreme air pollution also exacerbates the health impacts of heat. From these factors it follows that, from a health impact point of view, the severity of heat waves has increased in India. For the next decades we expect the trend due to global warming to continue but the surface cooling effect of aerosols to diminish as air quality controls are implemented. The expansion of irrigation will likely continue, though at a slower pace, mitigating this trend somewhat. Humidity will probably continue to rise. The combination will result in a strong rise in the temperature of heat waves. The high humidity will make health effects worse, whereas decreased air pollution would decrease the impacts.


2020 ◽  
pp. 034
Author(s):  
Ludovic Ravanel ◽  
Florence Magnin ◽  
Xavi Gallach ◽  
Philip Deline

Avec le réchauffement du climat, la dégradation du permafrost est à l'origine d'une intensification des processus géomorphologiques sur les versants de haute montagne. Dans les parois rocheuses, les écroulements se multiplient et leur volume augmente, posant des problèmes de sécurité non seulement à haute altitude (infrastructures, alpinistes), mais également pour les fonds de vallée. Cet article présente les travaux récemment menés dans le massif du Mont-Blanc sur la relation entre climat et écroulements à différentes échelles de temps, les effets des épisodes caniculaires et la répartition et l'évolution du permafrost de paroi. Under global warming, permafrost degradation tends to intensify geomorphological processes on high mountain slopes. In the perennially frozen rock walls, the number and volume of rockfalls is increasing, causing safety problems not only at high altitude (infrastructure, mountaineers) but also for the valleys. This article summarizes recent work carried out in the Mont-Blanc massif on the climate-rockfall relationship at different time scales, the effects of heat waves, and the distribution/evolution of rock wall permafrost.


2021 ◽  
Vol 11 (6) ◽  
pp. 186-191
Author(s):  
S. N. Vadzyuk ◽  
T. V. Kharkovska

Relevance: Over the last century, the modern climate is characterized by an average annual increase in global air temperature. According to existing scientific data, heat waves are often accompanied by mental, behavioral disorders that are combined with mood swings and increased anxiety. That is why the analysis of the incidence of mental disorders of the neurotic spectrum in the Ternopil region in the context of global warming is relevant.Materials and methods: To analyze the incidence of mental disorders of the neurotic spectrum, the archival data of the Ternopil Regional Clinical Psychoneurological Hospital for 10 years, from 2010 to 2019 were analyzed. The average annual air temperatures were determined according to the archival data of hydrometeorological observations by the meteorological station of the city of Ternopil during 2010-2019. The growth rate of these indicators was estimated by the time series method. Pearson's correlation coefficient was used to measure the degree of linear dependence between two variables, namely the rate of hospitalization growth and the average annual temperature in the region. Tables and graphs are built using Microsoft Excel and Microsoft Word.Results: The primary analysis of the incidence of mental disorders of the neurotic spectrum in Ternopil region showed that the percentage growth rate for the year ranged from -19.55% to + 20.62% and it was difficult to determine the direction of this phenomenon. In this regard, we carried out the alignment of the series by increasing the period and determining the arithmetic mean of the data for three years, respectively, we obtained data showing that for 10 years the prevalence of mental disorders of the neurotic spectrum in Ternopil region increased, the growth rate ranged from + 1.66% to + 6.32%.Conclusions: Analyzing the obtained results, we found that in the conditions of global warming in Ternopil region there is a dynamics of growth in the incidence of mental disorders of neurotic origin. Also, by calculating the correlation coefficient, a direct correlation between the increase in the average annual temperature and the increase in morbidity rates was proved. The data obtained should be taken into account in the development of protocols for the prevention and treatment of mental illness associated with the effects of climate change, and will also be used in the educational process at the Departments of Physiology, Pathological Physiology and Psychiatry.


2005 ◽  
Vol 18 (15) ◽  
pp. 2805-2811 ◽  
Author(s):  
Christophe Cassou ◽  
Laurent Terray ◽  
Adam S. Phillips

Abstract Diagnostics combining atmospheric reanalysis and station-based temperature data for 1950–2003 indicate that European heat waves can be associated with the occurrence of two specific summertime atmospheric circulation regimes. Evidence is presented that during the record warm summer of 2003, the excitation of these two regimes was significantly favored by the anomalous tropical Atlantic heating related to wetter-than-average conditions in both the Caribbean basin and the Sahel. Given the persistence of tropical Atlantic climate anomalies, their seasonality, and their associated predictability, the suggested tropical–extratropical Atlantic connection is encouraging for the prospects of long-range forecasting of extreme weather in Europe.


2019 ◽  
Vol 25 (4) ◽  
pp. 189-190
Author(s):  
Kent E. Pinkerton ◽  
Emily Felt ◽  
Heather E. Riden

Abstract. A warming climate has been linked to an increase in the frequency and severity of extreme weather events, including heat and cold waves, extreme precipitation, and wildfires. This increase in extreme weather results in increased risks to the health and safety of farmworkers. Keywords: Climate change, Extreme weather, Farmworkers, Global warming, Health and safety.


Sign in / Sign up

Export Citation Format

Share Document