{"id":151951,"date":"2025-01-18T19:28:15","date_gmt":"2025-01-18T13:58:15","guid":{"rendered":"https:\/\/pwonlyias.com\/stage\/?post_type=current-affairs&#038;p=151951"},"modified":"2025-01-20T14:30:33","modified_gmt":"2025-01-20T09:00:33","slug":"hydroclimate-whiplash","status":"publish","type":"current-affairs","link":"https:\/\/pwonlyias.com\/stage\/current-affairs\/hydroclimate-whiplash","title":{"rendered":"Hydroclimate Whiplash"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The devastating wildfires in Los Angeles were driven by rare meteorological conditions known as \u2018<\/span><b>hydroclimate whiplash\u2019<\/b><span style=\"font-weight: 400;\"> and exacerbated by climate change and human activities.<\/span><\/p>\n<h2><span style=\"font-size: 18pt;\"><b>About Hydroclimate Whiplash<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Definition<\/b><span style=\"font-weight: 400;\">: Refers to rapid alternation between <\/span><b>extremely wet and dangerously dry weather conditions <\/b><span style=\"font-weight: 400;\">in a region.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Contributing Mechanism<\/b><span style=\"font-weight: 400;\">:\u00a0<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">As the atmosphere warms, the amount of <\/span><b>water vapor it can hold increases<\/b><span style=\"font-weight: 400;\">, and the deficit of<\/span><b> water vapor in the atmosphere also rises exponentially.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Consequently, a<\/span><b> warmer atmosphere can retain significantly more water for longer periods<\/b><span style=\"font-weight: 400;\"> before releasing it as precipitation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">This relationship between global warming and the atmosphere results in<\/span><b> extended dry spells followed by more intense rainfall when precipitation finally occurs.<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><span class=\"vc_button\"><a href=\"https:\/\/store.pw.live\/govt-entrance-exams\/upsc-books\/upsc-modules?utm_source=SEO&#038;utm_medium=PW+Live&#038;utm_campaign=UPSC+Modules\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Check Out UPSC Modules From PW Store<\/span><\/a><\/span><\/p>\n<h2><span style=\"font-size: 18pt;\"><b>Impacts of Hydroclimate Whiplash<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Increased Droughts and Floods<\/b><span style=\"font-weight: 400;\">: Prolonged extremes strain ecosystems and water availability.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Wildfire Fuel<\/b><span style=\"font-weight: 400;\">: Wet periods encourage vegetation growth, which dries out during subsequent droughts, creating fuel for wildfires.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Human Health Risks<\/b><span style=\"font-weight: 400;\">:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Wildfire smoke exacerbates respiratory and cardiovascular diseases.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Flooding promotes waterborne illnesses like cholera and leptospirosis.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Global Trends<\/b><span style=\"font-weight: 400;\">: Hydroclimate whiplash events have increased by 31\u201366% in three-month periods (sub-seasonal) and 8\u201331% in 12-month periods (inter-annual) since the mid-20th century.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-size: 18pt;\"><b>Other Causes of Wildfires in California<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Santa Ana Winds<\/b><span style=\"font-weight: 400;\">: High-pressure winds from the Great Basin compress and heat as they descend, reducing humidity and drying vegetation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Anthropogenic Activities<\/b><span style=\"font-weight: 400;\">: Illegal campfires, fireworks, and urban encroachment into forested areas increase fire risks.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Climate Change<\/b><span style=\"font-weight: 400;\">: Rising global temperatures lead to warmer springs and summers, intensifying dry seasons and vegetation stress.<\/span><\/li>\n<\/ul>\n<div class=\"vc_table_green\"><\/p>\n<table style=\"width: 99.6375%;\">\n<tbody>\n<tr>\n<td style=\"width: 111.19%; 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