{"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":"","_crdt_document":"","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_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":{"0":"post-270478","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-climate-change","9":"tag-climate-models","10":"tag-research","11":"tag-weather","12":"tag-wind","14":"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":222451,"url":"https:\/\/climatescience.press\/?p=222451","url_meta":{"origin":270478,"position":0},"title":"New Report Teaches the Media the Difference Between Weather and Climate","author":"uwe.roland.gross","date":"06\/10\/2022","format":false,"excerpt":"One of the most common mistakes made when discussing climate change is claiming that specific weather events are proof of climate change","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/10\/image-273.png?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/10\/image-273.png?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/10\/image-273.png?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/10\/image-273.png?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/10\/image-273.png?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":231981,"url":"https:\/\/climatescience.press\/?p=231981","url_meta":{"origin":270478,"position":1},"title":"No, NPR, Climate Change Isn\u2019t \u2018\u2026Making the Weather More Severe,\u2019 nor Should It Be in Daily Weather Forecasts.","author":"uwe.roland.gross","date":"01\/12\/2022","format":false,"excerpt":"Many of the assertions Hersher makes in her article are demonstrably false. In addition, there is no evident benefit to adding a false climate connection to National\u00a0Weather\u00a0Service (NWS) reports, forecasts, and warnings.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/12\/0npr-hersher-fail.png?fit=783%2C510&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/12\/0npr-hersher-fail.png?fit=783%2C510&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/12\/0npr-hersher-fail.png?fit=783%2C510&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/12\/0npr-hersher-fail.png?fit=783%2C510&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":279931,"url":"https:\/\/climatescience.press\/?p=279931","url_meta":{"origin":270478,"position":2},"title":"Climate of Alarm","author":"uwe.roland.gross","date":"22\/09\/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":3},"title":"Yes, No, Maybe \u2013 but Its Going to be Something! Settled Climate Science in 2023","author":"uwe.roland.gross","date":"17\/07\/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":205592,"url":"https:\/\/climatescience.press\/?p=205592","url_meta":{"origin":270478,"position":4},"title":"No, NPR, Public Opinion Polls Aren\u2019t Proof of Climate Change","author":"uwe.roland.gross","date":"23\/06\/2022","format":false,"excerpt":"National Public Radio\u00a0(NPR) recently ran an article discussing the results of a poll it conducted claiming that Americans are suffering from extreme weather events due to climate change. Although because of the mainstream media\u2019s claims the public may be under the impression that every weather event is due to climate\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/06\/0opinion-poll-ga0b5fd31b_1920.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/06\/0opinion-poll-ga0b5fd31b_1920.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/06\/0opinion-poll-ga0b5fd31b_1920.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/06\/0opinion-poll-ga0b5fd31b_1920.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/06\/0opinion-poll-ga0b5fd31b_1920.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":233215,"url":"https:\/\/climatescience.press\/?p=233215","url_meta":{"origin":270478,"position":5},"title":"USA Today Blames Climate Change and \u2018Weird Weather\u2019 for Higher Disaster Costs and Crop Declines \u2013 Wrong on Both Counts!","author":"uwe.roland.gross","date":"09\/12\/2022","format":false,"excerpt":"A\u00a0USA Today\u00a0story from December 7th, 2022 by Elizabeth Weise claims climate change is causing droughts and other \u201cweird weather,\u201d that is hampering crop production. This is false.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/12\/0weird-wrong.jpg?fit=804%2C791&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/12\/0weird-wrong.jpg?fit=804%2C791&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/12\/0weird-wrong.jpg?fit=804%2C791&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/12\/0weird-wrong.jpg?fit=804%2C791&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}]}}