{"id":270478,"date":"2023-07-30T19:44:51","date_gmt":"2023-07-30T17:44:51","guid":{"rendered":"https:\/\/climatescience.press\/?p=270478"},"modified":"2023-07-30T19:45:05","modified_gmt":"2023-07-30T17:45:05","slug":"research-links-climate-change-to-lazier-jet-stream-leading-to-extreme-weather","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=270478","title":{"rendered":"Research links climate change to \u2018lazier\u2019 jet stream, leading to extreme weather\u00a0"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

From Tallbloke’s Talkshop<\/a><\/p>\n\n\n\n

July 17, 2023 by\u00a0oldbrew<\/strong><\/p>\n\n\n\n

\"\"
Credit: The Weather Network<\/figcaption><\/figure>\n\n\n\n

To what extent can ground conditions affect the weather, rather than the other way round? This study claims to have found something new, saying: \u2018Since 2000, frequent \u201cstuck\u201d weather patterns have produced heat waves over Greenland, resulting in exceptional melting of the Greenland Ice Sheet\u2019 \u2013 which begs the question: What started, or stopped, happening in or around 2000 to cause such patterns? The answer given is: \u2018Observations have revealed a more prevalent negative phase of the North Atlantic Oscillation (NAO)\u2019. In other words, a natural phenomenon. Getting to the bottom of what the paper says depends partly on interpreting what they mean by statements like this: \u2018One question is whether this is a consequence of climate change.\u2019<\/em>
\u2013 \u2013 \u2013
Jet streams are relatively narrow bands of strong wind in the upper atmosphere, typically occurring around 30,000 feet, and blowing west to east,\u00a0says Phys.org<\/a><\/em>.<\/p>\n\n\n\n

Their normal flows lead to week-to-week weather variations, modulated in the mid-latitudes by ridges and troughs in the jet stream. A high-pressure ridge, for example, produces clear, warmer weather conditions; a trough is typically followed by stormy conditions.<\/p>\n\n\n\n

Together, these form waves in the jet stream that can stall as the waves grow and become more amplified, causing \u201cstuck\u201d weather patterns that produce longer storms and heat waves.<\/p>\n\n\n\n

New research\u00a0published<\/a>\u00a0in Nature Communications describes observations linking increased warming at high latitudes and the ever-decreasing snow cover in North America to these stalls in atmospheric circulation.<\/p>\n\n\n\n

\u201cThese persistent and extreme conditions are thought to be increasing in the future as a result of this increased waviness in the jet stream,\u201d said the study\u2019s lead author Jonathon Preece, a postdoctoral researcher at the University of Georgia.<\/p>\n\n\n\n

Since 2000, frequent \u201cstuck\u201d weather patterns have produced heat waves over Greenland, resulting in exceptional melting of the Greenland Ice Sheet.<\/p>\n\n\n\n

In contrast to these observations, global climate models actually project a slight decrease in the blocked patterns over Greenland and, consequently, the models have under-represented the contribution of meltwater runoff from the ice sheet to global sea level rise.<\/p>\n\n\n\n

\u201cThese patterns have been consistently creating pulses of melting over the Greenland ice sheet that have been accounting for a large portion of the annual melting,\u201d said study co-author Marco Tedesco, a professor at Columbia Climate School\u2019s Lamont-Doherty Earth Observatory, and lead principal investigator on the project. \u201cAccounting for such an aspect is crucial for anticipating not only how much but how fast Greenland is and will be contributing to sea level rise.\u201d<\/p>\n\n\n\n

\u201cOne question is whether this is a consequence of climate change that we can expect to continue in the future [that] the climate models are failing to resolve,\u201d said Preece. \u201cOr are the climate models correct, in which case we\u2019d expect things to revert back to the norm and perhaps the rate of accelerated melt of the ice sheet will taper some?\u201d<\/p>\n\n\n\n

The new study presents evidence of a link to climate change, both in the increases in jet-stream waviness and ever-decreasing spring North American snow cover extent, which \u201cis impacting the atmosphere in a way that is favoring these blocked high-pressure systems over Greenland,\u201d Preece said.<\/p>\n\n\n\n

Full article\u00a0here<\/a><\/em>.<\/em>
\u2013 \u2013 \u2013
Research paper:\u00a0Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover<\/a>\u00a0(2023)<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

What started, or stopped, happening in or around 2000 to cause such patterns? The answer given is: \u2018Observations have revealed a more prevalent negative phase of the North Atlantic Oscillation (NAO)\u2019. In other words, a natural phenomenon. Getting to the bottom of what the paper says depends partly on interpreting what they mean by statements like this: \u2018One question is whether this is a consequence of climate change.\u2019<\/p>\n","protected":false},"author":121246920,"featured_media":270484,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818056,691818153,691821472,691818473,691818479],"class_list":["post-270478","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-climate-change","tag-climate-models","tag-research","tag-weather","tag-wind","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/012068231_072222-wls-extreme-heat-img.jpg?fit=1600%2C900&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-18my","jetpack-related-posts":[{"id":279931,"url":"https:\/\/climatescience.press\/?p=279931","url_meta":{"origin":270478,"position":0},"title":"Climate of Alarm","author":"uwe.roland.gross","date":"09\/22\/2023","format":false,"excerpt":"Many people take the connection between climate change and extreme weather events \u2014 wildfires, hurricanes, tornadoes, etc. \u2014 for granted. But the actual scientific data \u2026 tells a more complicated story.","rel":"","context":"In \"Climate change\"","block_context":{"text":"Climate change","link":"https:\/\/climatescience.press\/?tag=climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/09\/00Screenshot-2023-09-22-152352.png?fit=970%2C558&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/09\/00Screenshot-2023-09-22-152352.png?fit=970%2C558&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/09\/00Screenshot-2023-09-22-152352.png?fit=970%2C558&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/09\/00Screenshot-2023-09-22-152352.png?fit=970%2C558&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":267990,"url":"https:\/\/climatescience.press\/?p=267990","url_meta":{"origin":270478,"position":1},"title":"Yes, No, Maybe \u2013 but Its Going to be Something! Settled Climate Science in 2023","author":"uwe.roland.gross","date":"07\/17\/2023","format":false,"excerpt":"How can Dr Gallant say the nature of weather events has changed, that the current cluster of weather events is a sign of things to come, while simultaneously admitting she doesn\u2019t know whether climate change or the likely gathering El Nino has affected current weather events?","rel":"","context":"In \"Climate change\"","block_context":{"text":"Climate change","link":"https:\/\/climatescience.press\/?tag=climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00shamans.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00shamans.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00shamans.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00shamans.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00shamans.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":268401,"url":"https:\/\/climatescience.press\/?p=268401","url_meta":{"origin":270478,"position":2},"title":"Wild Weather News Spreads Like\u00a0Wildfire","author":"uwe.roland.gross","date":"07\/19\/2023","format":false,"excerpt":"World Weather Attribution and its alarming report were trumpeted by Time magazine, touted by the NOAA website Climate.gov , and featured by CBS News, CNBC, Scientific American, CNN, the Washington Post, USAToday, and the New York Times, among others.","rel":"","context":"In \"Climate change\"","block_context":{"text":"Climate change","link":"https:\/\/climatescience.press\/?tag=climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/OIG-38.jpeg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/OIG-38.jpeg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/OIG-38.jpeg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/OIG-38.jpeg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":259826,"url":"https:\/\/climatescience.press\/?p=259826","url_meta":{"origin":270478,"position":3},"title":"Wrong, The Guardian, Climate Change Isn\u2019t Causing More Climbing Deaths on Mount Everest","author":"uwe.roland.gross","date":"05\/31\/2023","format":false,"excerpt":"An article in\u00a0The Guardian\u00a0claims that climate change is killing people on Mount Everest. This is a false. Climate change is not highly localized nor does it occur in a single year. Evidence suggests other factors are behind the recent increase in deaths on Mount Everest.","rel":"","context":"In \"Climate change\"","block_context":{"text":"Climate change","link":"https:\/\/climatescience.press\/?tag=climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/05\/0where-is-mount-everest-568b305f3df78ccc1543f913.jpg?fit=1200%2C812&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/05\/0where-is-mount-everest-568b305f3df78ccc1543f913.jpg?fit=1200%2C812&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/05\/0where-is-mount-everest-568b305f3df78ccc1543f913.jpg?fit=1200%2C812&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/05\/0where-is-mount-everest-568b305f3df78ccc1543f913.jpg?fit=1200%2C812&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/05\/0where-is-mount-everest-568b305f3df78ccc1543f913.jpg?fit=1200%2C812&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":263541,"url":"https:\/\/climatescience.press\/?p=263541","url_meta":{"origin":270478,"position":4},"title":"No, WaPo, a Texas Heat Wave has Nothing to Do with Global Climate Change","author":"uwe.roland.gross","date":"06\/23\/2023","format":false,"excerpt":"The Washington Post\u00a0(WaPo) has published a story claiming that the heat wave in Texas this week is \u201ctied to climate change.\u201d This is false \u2013 it is a weather event, not a climate event. Texas experiences heatwaves on a regular basis, and history shows that Texas experienced event greater heat\u2026","rel":"","context":"In \"Climate change\"","block_context":{"text":"Climate change","link":"https:\/\/climatescience.press\/?tag=climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0-Weather-Climate.jpeg?fit=1024%2C768&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0-Weather-Climate.jpeg?fit=1024%2C768&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0-Weather-Climate.jpeg?fit=1024%2C768&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/06\/0-Weather-Climate.jpeg?fit=1024%2C768&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":247378,"url":"https:\/\/climatescience.press\/?p=247378","url_meta":{"origin":270478,"position":5},"title":"Slate Shows It Doesn\u2019t Understand the Difference Between Weather and Climate","author":"uwe.roland.gross","date":"03\/13\/2023","format":false,"excerpt":"Every year different places around the globe experience atypical weather, they always have.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/03\/image-344.png?fit=971%2C823&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/03\/image-344.png?fit=971%2C823&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/03\/image-344.png?fit=971%2C823&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/03\/image-344.png?fit=971%2C823&ssl=1&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/270478","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/users\/121246920"}],"replies":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=270478"}],"version-history":[{"count":5,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/270478\/revisions"}],"predecessor-version":[{"id":270485,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/270478\/revisions\/270485"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/270484"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=270478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=270478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=270478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}