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Nepal, hit by devastating floods and renewed calls for Chinese data on early warnings

Experts and officials from Nepal and China met in Kathmandu three months before the wall of water, rock and mud that hurled down a Himalayan valley bordering Nepal and China killed hundreds.

The agenda for the meeting, which took place in the capital of Nepal on May 27, included 10 Nepalese officials and 12 Chinese officials, including those from the Tibet region, where the disaster occurred. They discussed ways to strengthen cooperation between the two countries to monitor and respond effectively to hazards such as floods, bad weather, and glacier-related hazards.

Participants called for joint measures to reduce risk, such as inventories of glacial lake and hazard maps.

After the meeting,?two Nepali official said they didn't receive enough information from China?on glacier risk and water levels. They feared that insufficient data-sharing could hinder their ability to prepare and anticipate major disasters.

The May meeting was attended by Sauhardra Joshi a hydrologist at Nepal's Flood Forecasting Division.

Experts and officials have not placed blame on either side. The natural disaster will cost Nepal's economy a tenth of its annual output. Nepali officials claim that the priority for them is to intensify their cooperation with China.

China's Foreign Ministry said that the two countries have "maintained sound cooperation in the areas of meteorology and water resources, as well as disaster prevention and management".

In a press release, the Ministry said that "China will continue its strong support for Nepal's relief efforts from disasters, enhance cooperation in disaster mitigation and prevention, and safeguard common interests between the two peoples."

CHINA SAYS ITS DATA SHARE HAS BEEN TIMELESS

Last week the collapse of a glacier in Nepal's Langtang range, which divides Tibet from Nepal, caused a devastating flood. More than 900 people died and more than 5,000 remain missing on both sides.

China did not have any information about the condition of the glaciers, particularly those outside its borders.

Fan Xuanmei of Chengdu University of Technology's State Key Laboratory of Geohazard Prevention and Geoenvironment Protection told the state-run China Daily that it is difficult to detect such failures in advance.

The potential source areas are usually above 5,000 meters, which makes conventional field monitoring difficult. Snow and ice can limit satellite observations, and the steep terrain and snow cover can also make it difficult to monitor. Monitoring equipment must operate in cold temperatures and at high altitudes.

Binod Parajuli a Nepal government hydrologist said that at the meeting in Kathmandu the Chinese refused to sign the agreement and asked for further discussion.

The meeting was not reported in detail, nor were the Nepalese demands for greater cooperation to monitor the glaciers which threaten the communities on both sides.

China's embassy said on X that Beijing and Kathmandu remained in close communication on this issue and made "substantial" progress at the May meeting on promoting disaster information sharing across borders.

Officials said that Nepal expressed similar concerns in 2013. However, experts and officials warned that what they described as slow progress wasn't a significant cause of the latest disaster.

The Chinese Embassy rejected criticisms from Nepali social media users who claimed that China failed to give adequate warnings. It said Chinese and foreign experts had significant difficulties monitoring hazards in remote Himalayan regions.

It said that Chinese teams had "shared important information" with Nepal in a timely fashion.

Last year, Nepal expressed concern about a flooding in the same region, which was triggered by a sudden release of water in Tibet from a glacial ice lake. At least nine people died in Nepal, and more than a dozen are still missing.

Parajuli explained that "when the Chinese side notices heavy rainfall forecasts in?the Tibet region, they will provide us with this forecast and these observations." "But not for extreme events such as landslides and avalanches."

China started sharing heavy rain forecasts in Tibet via WeChat and email about a month back, according to Parajuli.

TIMELINE FOR CALAMITY

In an email sent to Nepali officials 12 days prior to the disaster, the World Meteorological Centre of China warned them that a monsoon was predicted for the region from August 14-19.

China warned that "additional rainfall will likely occur across most of Nepal. We wish to bring your attention to secondary and cascading risks, such as landslides, flash floods, but not only,"

The Chinese Embassy said that China had been sharing data, including on the lake formed from debris left over after last week's disaster.

Discussions over data sharing highlight the difficulty of monitoring, forecasting, and providing early warnings in a region dominated by geopolitical rivals such as China and India who control remote mountainous regions that hold vast quantities of snow and ice.

According to Austin Lord, senior Fellow at Washington's Stimson Center, the collapse of a glacier in an area that was relatively unmonitored was the cause of Wednesday's disaster. Lack of bilateral cooperation did not play a major role in Nepal's reaction, said Lord.

It's important to note that the lack of a properly articulated system is not an excuse. There is a very limited exchange of information between Nepal and China," Lord said, who is a member of a team that supports Nepal's Government on disaster risk and climate management.

"Chinese researchers have a greater capacity and have more resources to monitor than the Nepalese side in general."

Parajuli stated that the time it took for the torrent to reach Nepal is a good example of the importance of early warning systems.

Surveillance footage has been used to define the disaster. Around 8:32 am Nepal time, on Wednesday morning, the flood swept through a border in Tibet, as people tried to flee.

Parajuli received a phone call 26 minutes later from the head of Nepal's National Disaster Risk Reduction and Management Authority alerting him about a flooding on the Trishuli River. Parajuli and his team discovered that a border monitoring station hadn't transmitted data since 8:40.

He said that the team tried to contact stations downstream, but they were unable to post data. This led them to believe the devices had been washed out.

Parajuli stated that after contacting local Nepali officials to confirm the flooding his team sent out a "public alert" to mobile phone users around 9:13.

According to the Nepali government, at least four monitoring stations have been?destroyed' by the flood which swept 168 km (104miles) downstream of the Nepal-China border. The flood carried 57.4 millions cubic metres (2 billion cu feet) worth of water, or more than twice as much as usual.

"HUGE GUSH of MUD Coming Straight at Us"

According to the Stimson Center, the floodwaters that swept through Nepal damaged 19 bridges, 40 km of highway and more than 10 percent of the country's electricity generation capacity.

"It wasn't ?water. Keshav Baral, a resident of Tupche Village about 25 km (15miles) downstream from the border, described a massive gush coming straight at them. "I tried grabbing my wife's hands, but she was swept by the mud."

According to Nepali authorities, when a part of the glacier shattered, it crashed to the valley floor hundreds of meters below. This caused high-speed floods.

The Hindu Kush Himalayas are home to millions of people, from Afghanistan to Myanmar. They contain the largest amount of ice in the world outside of the poles. There are 63,700 ice glaciers that cover nearly 56,000 sq km (22,200 sq miles), an area almost as large as Croatia. This ice can store up to 1,400 cubic miles (5,700 cubic km) of ice.

According to Basanta Adhikari, Director of the Centre for Disaster Studies at Nepal's Tribhuvan University, the glacier that caused the recent disaster contained an estimated 5,000,000 cubic metres of ice, rock and mud.

According to a study from 2023 by the International Centre 'for Integrated Mountain Development, climate change is driving glacier melting as snow cover decreases and snowfall becomes erratic.

The centre's project states that these changes will increase the risk of flooding and landslides as mountain communities are also faced with hazards such as erosion and sedimentation.

Many of Nepal's main river systems begin in Tibet and flow through one the most seismically-active and flood-prone areas of the world.

Parajuli, Nepal's Minister of Home Affairs, said that Nepal will work with China on research and building systems to monitor avalanches as well as the release of water in glacial lakes - major risks to mountain communities.

He said that his department would propose an agreement for data sharing with China along the lines of one Nepal has with India. This will allow more frequent information about precipitation, river levels and not only high-precipitation predictions.

He said that Nepal would seek data from satellites every 10 minutes, so "we could warn and save our people." "Our primary goal is to not miss any future catastrophe."

(source: Reuters)