{"id":3009,"date":"2021-04-16T03:43:11","date_gmt":"2021-04-15T17:43:11","guid":{"rendered":"http:\/\/www.realclimaterecords.com.au\/?p=3009"},"modified":"2021-04-16T03:43:11","modified_gmt":"2021-04-15T17:43:11","slug":"bureau-of-meteorology-cooling-the-past-to-declare-record-heat-dr-marohasy-noted-that-the-highest-temperature-recorded-in-a-so-called-stevenson-screen-thermometer-was-51-6c-at-bourke-in-190","status":"publish","type":"post","link":"http:\/\/www.realclimaterecords.com.au\/?p=3009","title":{"rendered":"Bureau of Meteorology \u2018cooling the past to declare record heat.&#8217; Dr Marohasy noted that the highest temperature recorded in a so-called Stevenson screen thermometer was 51.6C at Bourke in 1909, as well as the extreme heat in Victoria ahead of the 1939 Black Friday bushfires."},"content":{"rendered":"<p><a href=\"https:\/\/www.theaustralian.com.au\/science\/bureau-of-meteorology-cooling-the-past-to-declare-record-heat\/news-story\/9f40e780eaf267471b35fd851f24b3fe\">https:\/\/www.theaustralian.com.au\/science\/bureau-of-meteorology-cooling-the-past-to-declare-record-heat\/news-story\/9f40e780eaf267471b35fd851f24b3fe<\/a><\/p>\n<h1 id=\"story-headline\">past to declare record heat\u2019<\/h1>\n<div id=\"story-inner\" class=\"story-inner--long-headline\">\n<div id=\"story-primary-asset\" class=\"media-image view-large\">\n<div class=\"story-image secondary-asset landscape\">\n<figure><a class=\"enlarge zoomable zoom-on\" href=\"https:\/\/cdn.newsapi.com.au\/image\/v1\/0f616c3b5454ceb04e7c43b0849c98dc\" data-image-size=\"1280x720\" data-pswp-uid=\"1\"><img loading=\"lazy\" class=\"loaded\" src=\"https:\/\/cdn.newsapi.com.au\/image\/v1\/0f616c3b5454ceb04e7c43b0849c98dc?width=650\" alt=\"Climate scientist Jennifer Marohasy.\" width=\"650\" height=\"365\" data-src=\"https:\/\/cdn.newsapi.com.au\/image\/v1\/0f616c3b5454ceb04e7c43b0849c98dc?width=650\" data-was-processed=\"true\" \/><\/a><figcaption class=\"story-caption\">Climate scientist Jennifer Marohasy.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<ul id=\"story-info\" class=\"story-info--has-author story-info--has-comments view-xlarge\">\n<li class=\"story-info__byline story-info__byline--full\">\n<div class=\"author\">\n<div class=\"author-module no-bio\" data-author-name=\"Paul Garvey\">\n<div class=\"author-module__header\">\n<h2 class=\"author-module__heading\"><a href=\"https:\/\/www.theaustralian.com.au\/author\/Paul+Garvey\" rel=\"author\">Paul Garvey<\/a><\/h2>\n<\/div>\n<div class=\"author-module__content\">\n<div class=\"author-module__title\">Senior Reporter<\/div>\n<\/div>\n<\/div>\n<p><img loading=\"lazy\" class=\"tcog-pixel loading\" src=\"https:\/\/i1.wp.com\/pixel.tcog.cp1.news.com.au\/track\/component\/author\/5d50871c5d138fceccc10167a42da650\/?esi=true&amp;t_product=the-australian&amp;t_template=s3\/austemp-article_common\/broadsheet\/components\/article-author\/widget&amp;td_bio=false&amp;td_location=none\" width=\"0\" height=\"0\" data-was-processed=\"true\" \/><\/p>\n<\/div>\n<\/li>\n<li class=\"story-info__timestamp\"><time class=\"date-and-time\" datetime=\"2019-12-19T20:05:00.000Z\">7:05AM December 20, 2019<\/time><\/li>\n<li class=\"story-info__comments\"><a id=\"scroll-comments\" href=\"https:\/\/www.theaustralian.com.au\/science\/bureau-of-meteorology-cooling-the-past-to-declare-record-heat\/news-story\/9f40e780eaf267471b35fd851f24b3fe#coral\"><span class=\"coral-commentcount\">1313 <em>Comments<\/em><\/span><\/a><\/li>\n<\/ul>\n<div id=\"story-description\">\n<p class=\"selectionShareable\">Climate scientist and author Jennifer Marohasy has challenged the methodology behind the Bureau of Meteorology\u2019s <a href=\"https:\/\/www.theaustralian.com.au\/nation\/millions-to-seek-relief-as-mercury-soars-into-mid40s\/news-story\/e6d4de3abbb50d1e48c94c072c9bbe71\">declarations that\u00a0Australia has experienced its hottest two days on record<\/a> this week.<\/p>\n<p class=\"selectionShareable\">The bureau on Thursday said its preliminary analysis of data from about 700 weather stations across the country showed Wednesday was the hottest day recorded in Australia, with the nationally averaged maximum daytime temperature reaching 41.9C.<\/p>\n<p class=\"selectionShareable\">That was a degree higher than the previous record of 40.9C set on Tuesday, which itself broke the mark of 40.3C from January 2013.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<div class=\"twitter-tweet twitter-tweet-rendered\"><iframe id=\"twitter-widget-0\" class=\"\" title=\"Twitter Tweet\" src=\"https:\/\/platform.twitter.com\/embed\/Tweet.html?dnt=false&amp;embedId=twitter-widget-0&amp;features=eyJ0ZndfZXhwZXJpbWVudHNfY29va2llX2V4cGlyYXRpb24iOnsiYnVja2V0IjoxMjA5NjAwLCJ2ZXJzaW9uIjpudWxsfSwidGZ3X2hvcml6b25fdHdlZXRfZW1iZWRfOTU1NSI6eyJidWNrZXQiOiJodGUiLCJ2ZXJzaW9uIjpudWxsfX0%3D&amp;frame=false&amp;hideCard=false&amp;hideThread=false&amp;id=1207539156483792897&amp;lang=en&amp;origin=https%3A%2F%2Fwww.realclimaterecords.com.au%2F%3Fp%3D1830&amp;sessionId=a69d2ee57931f0103d6f3618e590aedb71d86e1c&amp;theme=light&amp;widgetsVersion=2d233ae%3A1618352735472&amp;width=550px\" frameborder=\"0\" scrolling=\"no\" allowfullscreen=\"allowfullscreen\" data-tweet-id=\"1207539156483792897\" data-mce-fragment=\"1\"><\/iframe><\/div>\n<p>&nbsp;<\/p>\n<p class=\"selectionShareable\">The record averages announced by the bureau this week are preliminary but are typically confirmed within three days once quality-control processes are completed, but a spokeswoman for the Bureau of Meteorology said there was unlikely to be any significant change.<\/p>\n<p class=\"selectionShareable\">\u201cThere is not expected to be any variance in the preliminary and final rankings, since the records have been achieved by relatively large margins,\u201d she said.<\/p>\n<p>As much of the country sweltered through extreme temperatures on Wednesday, and while bushfires destroyed homes in NSW and Sydney was once again choked in smoke, some challenged whether the widespread heat was truly unprecedented.<\/p>\n<p class=\"selectionShareable\">Dr Marohasy, who has long been critical of some of the \u00adbureau\u2019s calculations, said the methodology behind the calculation was \u201ctotally flawed\u201d.<\/p>\n<p class=\"selectionShareable\">She has criticised revisions made to historical measurements, which she said lowered average temperatures recorded in the past, and said the quality of much of the bureau\u2019s historical data had been compromised by attempts to homogenise the information and \u00adadjust for changes in techniques.<\/p>\n<p class=\"selectionShareable\">\u201cThey keep fixing them up and they keep making it cooler in the past,\u201d Dr Marohasy said.<\/p>\n<p class=\"selectionShareable\">\u201cThe more processed the data, the more removed from reality it is.\u201d<\/p>\n<p class=\"selectionShareable\">Dr Marohasy noted that the highest temperature recorded in a so-called Stevenson screen thermometer was 51.6C at Bourke in 1909, as well as the extreme heat in Victoria ahead of the 1939 Black Friday bushfires.<\/p>\n<p class=\"selectionShareable\">Other historical records point to similar or higher temperatures elsewhere in Australia before then, although she said some of those measures would have been affected by the use of thermometers in Glashier stands and these were not as readily comparable.<\/p>\n<p class=\"selectionShareable\">\u201cIt\u2019s been a hot few weeks and I really feel for the people who are fighting bushfires.<\/p>\n<p class=\"selectionShareable\">\u201cBut none of this is actually \u00adunprecedented if you look at the historical figures.\u201d<\/p>\n<p class=\"selectionShareable\">Author and climate sceptic Joanne Nova, meanwhile, pointed to accounts of a heatwave in Jan\u00aduary 1896.<\/p>\n<p class=\"selectionShareable\">\u201cNewspaper reports of the day showed temperatures that month, before all our CO<span id=\"U623336486217enF\">2<\/span> emissions, ranged from 44C to 51C all across the country.<\/p>\n<p class=\"selectionShareable\">\u201cHundreds of people died from heat apoplexy,\u201d she said.<\/p>\n<p class=\"selectionShareable\">\u201cEmergency trains were put on in outback NSW to evacuate \u00adpeople from the unbearable heat in a time when no one had an airconditioner or a fridge and freezer.<\/p>\n<p class=\"selectionShareable\">\u201cHorses fell in the street.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.theaustralian.com.au\/science\/bureau-of-meteorology-cooling-the-past-to-declare-record-heat\/news-story\/9f40e780eaf267471b35fd851f24b3fe past to declare record heat\u2019 Climate scientist Jennifer Marohasy. Paul Garvey Senior Reporter 7:05AM December 20, 2019 1313 Comments [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[116,657,365,21,509,112],"_links":{"self":[{"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=\/wp\/v2\/posts\/3009"}],"collection":[{"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3009"}],"version-history":[{"count":1,"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=\/wp\/v2\/posts\/3009\/revisions"}],"predecessor-version":[{"id":3010,"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=\/wp\/v2\/posts\/3009\/revisions\/3010"}],"wp:attachment":[{"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3009"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3009"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.realclimaterecords.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}