{"id":60038839,"date":"2024-06-26T12:15:43","date_gmt":"2024-06-26T11:15:43","guid":{"rendered":"https:\/\/dialogue.earth\/?p=60038839"},"modified":"2024-07-02T13:38:12","modified_gmt":"2024-07-02T12:38:12","slug":"unlocking-the-secrets-of-himalayan-glaciers","status":"publish","type":"post","link":"https:\/\/dialogue.earth\/en\/climate\/unlocking-the-secrets-of-himalayan-glaciers\/","title":{"rendered":"Unlocking the secrets of Himalayan glaciers"},"content":{"rendered":"\n<p>One late afternoon in May 2024, as light snowfall descended, glaciologist Ines&nbsp;Dussaillant was relaxing at the <a href=\"https:\/\/evk2cnr.org\/cms\/files\/evk2cnr.org\/Brochure%20Comitato%20Ev-K2-CNR_eng.pdf\">Pyramid International Laboratory<\/a>\u2019s lodge.<\/p>\n\n\n\n<p>Tucked in a small valley at an altitude of 5,050 metres, near Mount Everest\u2019s base camp, the facility is a unique centre for high-altitude scientific research. Dussaillant had just returned from installing a sensor that monitors the Mera Glacier, located in eastern Nepal, as part of an ongoing study that began in 2007.<\/p>\n\n\n\n<p>This glacier has been continuously monitored by scientists from the French <a href=\"https:\/\/en.ird.fr\/our-identity\">Institute of Research and Development (IRD)<\/a>. Dussaillant, who works at the <a href=\"https:\/\/geo.uzh.ch\/en\/units\/wgms.html\">World Glacier Monitoring Service<\/a>, is collaborating with IRD to enhance understanding of glacial dynamics. \u00a0<\/p>\n\n\n\n<p>Dussaillant described the Mera Glacier as one of the main \u201creference glaciers\u201d in the Himalayas: \u201cMonitoring of this glacier can tell [us] not only what is happening with [the] Mera, but we can extrapolate what is happening here to the surrounding glaciers \u2026 so, it is super important to have annual measurements and continuous monitoring of this glacier.\u201d The sensor, originally installed in 2022, had malfunctioned and was sent back to France for repairs last year, before Dussaillant reinstalled it. &nbsp;&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-cd-article-image aligncenter block--article-image block--article-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--article-image__column\"><div class=\"hide-expand block--article-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glaciologist-Ines-Dussaillant-outside-Pyramid-Laboratory_Athar-Parvaiz_COMPRESSED.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glaciologist-Ines-Dussaillant-outside-Pyramid-Laboratory_Athar-Parvaiz_COMPRESSED-768x576.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glaciologist-Ines-Dussaillant-outside-Pyramid-Laboratory_Athar-Parvaiz_COMPRESSED-1024x768.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glaciologist-Ines-Dussaillant-outside-Pyramid-Laboratory_Athar-Parvaiz_COMPRESSED.jpg 2560w\" data-sizes=\"(max-width: 600px) 768px, (max-width: 1024px) 1024px, 2560px\" alt=\"Person in a brightly coloured coat stands in front of a stone building in a misty mountainous area\"\/><\/div><div class=\"block--article-image__content\"><div itemprop=\"caption\" class=\"block--article-image__caption\">Ines Dussaillant, standing outside the Pyramid Laboratory in Lobuche, Eastern Nepal (Image: Athar Parvaiz)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glaciologist-Ines-Dussaillant-outside-Pyramid-Laboratory_Athar-Parvaiz_COMPRESSED.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1920\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<p>The sensor \u201cwill allow us to measure [one of] the biggest unknowns,\u201d Dussaillant said: precipitation at different altitudes \u2013 and \u201callow us to analyse how glaciers [in this region] are behaving.\u201d&nbsp;<\/p>\n\n\n\n<p>The importance of such data extends beyond Nepal, impacting the entire Himalayan region where harsh terrain and complex geopolitics complicate the in-situ data collection. Shakil Romshoo, a Kashmir-based glaciologist, remote sensing and geographic information system (GIS) specialist told Dialogue Earth that, of the almost 33,000 glaciers in the Indian Himalayas, only about 15 receive detailed glaciological field measurements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-the-need-to-ascend-and-ascertain-nbsp\">The need to ascend and ascertain &nbsp;<\/h2>\n\n\n\n<p>Advances in computer modelling and satellite data have diverted focus from traditional field observations, with Dussaillant stressing the critical need for these measurements to complement the insights provided by new technologies. Integrating in-situ data with satellite observations was vital, she said, as satellites help track long-term differences, wheras annual field measurements provide detailed insights into yearly variations.<\/p>\n\n\n\n<p>Romshoo agreed. &#8220;Field glaciology remains crucial as it helps to validate and ground-truth remote sensing findings [from satellites],\u201d he explained. He added that field data were imperative for refining and calibrating computer simulation models used to predict glaciological processes.&nbsp;<\/p>\n\n\n\n<a class=\"wp-block-cd-related-news alignright block--related-news loading\" data-post-id=\"106308\"><div class=\"block--related-news__image\"><\/div><div class=\"block--related-news__content\"><span class=\"block--related-news__heading\">Recommended<\/span><span class=\"block--related-news__title\"><\/span><\/div><\/a>\n\n\n\n<p>According to Wei&nbsp;Yang, a glaciologist from the <a href=\"https:\/\/scholar.google.com\/citations?user=EV0z4kIAAAAJ\">Institute of Tibetan Plateau Research<\/a>, satellite data also has its limitations. Capturing meteorological conditions and sub-glacial phenomena at extreme elevations, which are critical for understanding climate change impacts and the melting of the cryosphere \u2013 the frozen water part of the Earth\u2019s system \u2013 are only possible with fieldwork, he said.<\/p>\n\n\n\n<p>That does not mean all glaciers have to be monitored, Dussaillant told Dialogue Earth, but \u201cwe need at least one long-term series of annual measurements in each of different micro-climatic Himalayan regions to be able to really understand what is happening.\u201d Wei said this should encompass a variety of glacier types, including those that are debris-free, debris-covered and those that terminate in lakes, located in both warm, humid conditions and cold, arid areas.<br><br>Himalayan glaciers are rapidly retreating due to climate change, and have receded <a href=\"https:\/\/hkh.icimod.org\/hi-wise\/\">65% faster<\/a> in the 2010s compared to the previous decade, posing significant threats to water security and regional stability. According to ICIMOD, there are currently over 2,070 glacial lakes in Nepal, mostly formed during the second half of the 20th century due to increasing temperatures, and 21 have been <a href=\"https:\/\/www.icimod.org\/event\/glacial-lake-inventory-launch\/\">identified<\/a> as potentially dangerous glacial lakes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-braving-harsh-conditions-to-unlock-glacier-secrets\">Braving harsh conditions to unlock glacier secrets<\/h2>\n\n\n\n<p>Sudeep Thakuri, dean of Faculty of Science and Technology at Nepal\u2019s Mid-West University, explained the dangers of researching glacial lakes, particularly those identified as hazardous. In 2019, while surveying the Lower Barun glacial Lake in eastern Nepal \u2013 one of the 21 identified as potentially dangerous \u2013 Thakuri and his team experienced a sudden weather shift.<\/p>\n\n\n\n<p>\u201cThe weather was sunny and we were feeling comfortable, surveying the lake beneath a calm and cloud-free sky at around 12:30,\u201d he told Dialogue Earth. \u201cMoments later, the weather suddenly changed covering the lake area in thick, dark fog and the temperature dropped very rapidly.\u201d &nbsp;<\/p>\n\n\n\n<div class=\"wp-block-cd-article-image aligncenter block--article-image block--article-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--article-image__column\"><div class=\"hide-expand block--article-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glacial-lake-bathymetry-survey_Sudeep-Thakuri.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glacial-lake-bathymetry-survey_Sudeep-Thakuri-768x576.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glacial-lake-bathymetry-survey_Sudeep-Thakuri-1024x768.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glacial-lake-bathymetry-survey_Sudeep-Thakuri.jpg 2560w\" data-sizes=\"(max-width: 600px) 768px, (max-width: 1024px) 1024px, 2560px\" alt=\"Two people inspect a dinghy next to a lake in a snowy mountainous area\"\/><\/div><div class=\"block--article-image__content\"><div itemprop=\"caption\" class=\"block--article-image__caption\">Sudeep Thakuri\u2019s colleagues checking the logistics for the Lower Barun glacial lake&#8217;s bathymetry survey. Bathymetry is the study of mapping underwater surfaces, such as lake beds or the ocean floor. (Image: Sudeep Thakuri)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-glacial-lake-bathymetry-survey_Sudeep-Thakuri.jpg\"\/><meta itemprop=\"contentSize\" content=\"1 MB\"\/><meta itemprop=\"height\" content=\"1920\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<p>The lake\u2019s surface began to churn with waves and ice sheets started appearing, likely from disturbances at the upper glacier\u2019s terminus, he said, and, &#8220;It was chillingly cold \u2026 making it hard to hold things [with our near-frozen hands].&#8221; Despite these sudden temperature changes, which could lead to hypothermia or worse, his team managed to gather their intended data without injury.<\/p>\n\n\n\n<p>Irfan Rashid, a climate scientist at Kashmir University\u2019s Department of Geoinformatics, said that the biggest challenge for studying glaciers in the Himalayas is \u201cthe extremely difficult and relatively inaccessible terrain,\u201d especially glacial surfaces, which have dangerous crevasses. He said surveying these areas can be life-threatening due to the ice-cold waters and unstable hanging ice that can trigger lethal waves, capable of capsizing boats.<\/p>\n\n\n\n<div class=\"wp-block-cd-article-image aligncenter block--article-image block--article-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--article-image__column\"><div class=\"hide-expand block--article-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Ladakh-Himalayas-researchers-in-canoe-glacial-lake_Nadeem-Ahmad-Najar.jpeg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Ladakh-Himalayas-researchers-in-canoe-glacial-lake_Nadeem-Ahmad-Najar-768x576.jpeg 768w, https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Ladakh-Himalayas-researchers-in-canoe-glacial-lake_Nadeem-Ahmad-Najar-1024x768.jpeg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Ladakh-Himalayas-researchers-in-canoe-glacial-lake_Nadeem-Ahmad-Najar.jpeg 1280w\" data-sizes=\"(max-width: 600px) 768px, (max-width: 1024px) 1024px, 1280px\" alt=\"Three people in a canoe paddling on a lake in a mountainous area\"\/><\/div><div class=\"block--article-image__content\"><div itemprop=\"caption\" class=\"block--article-image__caption\">Irfan Rashid (right) rowing a boat during the bathymetry survey of proglacial lake linked to the Drang Drung Glacier at Zanskar (Image: Nadeem Ahmad Najar)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Ladakh-Himalayas-researchers-in-canoe-glacial-lake_Nadeem-Ahmad-Najar.jpeg\"\/><meta itemprop=\"contentSize\" content=\"206 KB\"\/><meta itemprop=\"height\" content=\"960\"\/><meta itemprop=\"width\" content=\"1280\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<p>Wildlife poses additional risks in these remote areas. Rashid shared an incident from 2016, while his team was camped near Machoi Glacier: \u201cWe couldn\u2019t sleep that night as the bears smelled [the] eatables that we were carrying,\u201d Rashid recalled. Despite efforts to scare them off with firecrackers and loud noises, they lingered for hours.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-human-challenges-and-achievements\">Human challenges and achievements<\/h2>\n\n\n\n<p>Patrick Wagnon, a glaciologist at the French Institute of Research and Development, said finding the right people and institutions for collaboration when monitoring Himalayan glaciers, was for him, \u201cthe most difficult challenge\u201d. His work began with Chhota Shigri Glacier in India in 2002 and then with Mera Glacier in Nepal in 2007.<\/p>\n\n\n\n<div class=\"wp-block-cd-article-image alignright block--article-image block--article-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--article-image__column\"><div class=\"hide-expand block--article-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-Changri-Nup-glacier-Patrick-Wagnon-servicing-weather-station_Christian-Vincent-rotated.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-Changri-Nup-glacier-Patrick-Wagnon-servicing-weather-station_Christian-Vincent-768x1024.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-Changri-Nup-glacier-Patrick-Wagnon-servicing-weather-station_Christian-Vincent-768x1024.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-Changri-Nup-glacier-Patrick-Wagnon-servicing-weather-station_Christian-Vincent-rotated.jpg 1920w\" data-sizes=\"(max-width: 600px) 768px, (max-width: 1024px) 1024px, 1920px\" alt=\"A man stands next to a weather station in front of tall snowy mountains\"\/><\/div><div class=\"block--article-image__content\"><div itemprop=\"caption\" class=\"block--article-image__caption\">Patrick Wagnon servicing an automatic weather station at the debris-covered part of Changri Nup Glacier (Image: Christian Vincent)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2024\/06\/Nepal-Changri-Nup-glacier-Patrick-Wagnon-servicing-weather-station_Christian-Vincent-rotated.jpg\"\/><meta itemprop=\"contentSize\" content=\"833 KB\"\/><meta itemprop=\"height\" content=\"2560\"\/><meta itemprop=\"width\" content=\"1920\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<p>\u201cWe had to understand the local organisations, establish contacts, share cultures and assess the local community needs,\u201d Wagnon told Dialogue Earth. The process required significant time, energy and resources. Reflecting on his more than two decades of experience on Himalayan glaciers, he said that he has \u201clearned more from local communities\u201d than he \u201ccould teach\u201d.<br><br>Wagnon\u2019s greatest satisfaction comes from seeing local talent flourish. Referencing Arbindra Khadka, a Nepali student involved in the Mera Glacier project, he describes him as becoming \u201ca true output\u201d of their collaborative efforts. <em><\/em><\/p>\n\n\n\n<p>However, understanding local challenges, building trust among locals and training scientists \u201ctakes more time and energy than repeating annual field measurements even at 6,300 metres above sea level.\u201d &nbsp;<br><br>Wagnon added: \u201cThe idea of our monitoring programmes is to transfer the responsibilities of our projects to local scientists.\u201d<\/p>\n\n\n\n<p><em>This story was supported in part by Himalayan Climate Boot Camp 2024<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As glaciers in the Himalayas retreat, glaciologists and climate scientists struggle to get accurate data in the face of treacherous terrain, dangerous weather and even wild bears<\/p>\n","protected":false},"author":20000038,"featured_media":60038898,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[761,50039903],"tags":[50040713,20000628,50040707],"hashtags":[],"country":[20000113],"class_list":["post-60038839","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climate","category-water","tag-glaciers","tag-science","tag-the-third-pole","country-nepal"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Unlocking the secrets of Himalayan glaciers<\/title>\n<meta name=\"description\" content=\"As glaciers in the Himalayas retreat, glaciologists and climate scientists struggle to get accurate data in the face of treacherous terrain, dangerous weather and even wild bears\" \/>\n<meta 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