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'Flash drought' frequency increasing due to climate change: study

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Lucie Aubourg, Agence France-Presse

<div class="embed-wrap"><figure data-feedback="fb:likes,fb:comments"><img alt="A view on a yellow sky and smoke during a wild fire near the city of Santa Juana, Chile, Feb. 3, 2023. Chilean regions of Biobio, Nuble and La Araucania are the most affected by fires that have already destroyed more than 45,000 hectares and hundreds homes and have caused evacuations in dozens of municipalities. The fires coincide with a long drought that has lasted for more than thirteen years and with an unprecedented heatwave in the south, with temperatures that can reach 40 degrees Celsius in southern areas in the next few hours. Pablo Hidalgo, EPA-EFE" src="https://sa.kapamilya.com/absnews/abscbnnews/media/2023/overseas/04/14/20230203-chile-wildfire-epa11282431.jpg"/><figcaption>A view on a yellow sky and smoke during a wild fire near the city of Santa Juana, Chile, Feb. 3, 2023. Chilean regions of Biobio, Nuble and La Araucania are the most affected by fires that have already destroyed more than 45,000 hectares and hundreds homes and have caused evacuations in dozens of municipalities. The fires coincide with a long drought that has lasted for more than thirteen years and with an unprecedented heatwave in the south, with temperatures that can reach 40 degrees Celsius in southern areas in the next few hours. <em>Pablo Hidalgo, EPA-EFE</em></figcaption></figure></div><p>WASHINGTON — Dry-spells known as flash droughts, with a surprisingly rapid onset and often devastating impact, are becoming more frequent as human activity warms the planet, according to a study published Thursday.</p><p>Though droughts are generally thought of as long-term phenomena, some can occur quite suddenly, in a matter of weeks, when the conditions are right.</p><p>Global warming is a recipe for increasing those special conditions around the world, creating in certain areas a decrease in precipitation and increased evaporation, which dries out the soil more quickly.</p><p>For the study, published in the journal Science, researchers analyzed a combination of satellite data and ground moisture readings from a period of over 60 years (1951-2014).</p><p>&quot;Both flash and slow droughts are increasing&quot; as global temperatures rise, lead author Xing Yuan told AFP.</p><p>But flash droughts are increasing more quickly &quot;especially over Europe, North and East Asia, Sahel and west coast of South America,&quot; he said.</p><p>The researcher, based out of China&#x27;s Nanjing University of Information Science and Technology (NUIST), warned that the rapid onset of flash droughts gives humans little time to adapt, such as by diverting water resources or preparing for wildfires.</p><p>&quot;The vegetation do not have enough time to adapt either,&quot; he added.</p><p>LINK<br/>https://news.abs-cbn.com/spotlight/11/11/22/threat-multiplier-how-climate-change-affects-health</p><p>Yuan&#x27;s team used climate modeling to forecast how flash droughts will change under several possible greenhouse gas emission scenarios.</p><p>Even if emissions are moderate, flash droughts will continue to become more frequent across practically all regions. Under higher emissions scenarios, the trend would be more drastic.</p><p>Yuan also said the data showed a general increase in drought onset speeds, with his team finding a &quot;robust transition at global scale&quot; of slow to flash droughts.</p><p>&quot;We believe the reduction in emission can slow down this transition,&quot; he told AFP.</p><p>The concept of flash drought emerged in the early 21st century, but has received more attention since the summer 2012 drought in the United States, which set in particularly quickly and caused more than $30 billion in economic losses.</p><p>A commentary piece by two professors in the Netherlands, also published in Science, said the study&#x27;s warning &quot;should be taken seriously&quot; as the threat &quot;may be even greater than they suggest.&quot;</p><p>David Walker of Wageningen University and Anne Van Loon of Vrije Universiteit (VU) Amsterdam, both of whom were not involved in Yuan&#x27;s work, underlined that most of the &quot;hot spot regions&quot; determined by the study were particularly low-income areas.</p><p>&quot;These regions generally have more vulnerable populations and lower financial resources for coping mechanisms,&quot; they said.</p><p>The pair also added that current methods for detecting droughts, often month-by-month data analyses, must be updated to &quot;operate on shorter time scales,&quot; due to the increase in flash droughts which &quot;may build and trigger outcomes in just weeks.&quot;</p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/spotlight/03/14/23/satellites-link-rain-drought-intensity-to-global-warming">Satellites link rain, drought intensity to global warming</a></li>	<li><a href="https://news.abs-cbn.com/spotlight/08/25/22/drought-what-you-need-to-know">Drought: What is it and what can we do about it?</a></li></ul><div><strong>© Agence France-Presse</strong></div><figure class="op-interactive"><iframe height="315" src="https://www.youtube.com/embed/fKKl2no6Nn4?enablejsapi=1" width="560"></iframe></figure><div class="iwantbar">Watch more News on <a href="https://www.iwanttfc.com/#!/browse/Genres/News/tag_id_genres/id_news" target="_blank">iWantTFC</a></div><div> </div>

Dry-spells known as flash droughts, with a surprisingly rapid onset and often devastating impact, are becoming more frequent. 

'Flash drought' frequency increasing due to climate change: study

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'Flash drought' frequency increasing due to climate change: study

Lucie Aubourg,

Agence France-Presse

Published April 14, 2023 07:22 AM PHT

Read More:

climate

agriculture

drought

China

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