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CRYOSPHERE INITIATIVE

The HKH CryoHub

The collaborative HKH CryoHub platform supports knowledge generation and exchange, learning, and networking, to create better connected practitioners and decision makers to enhance work and policies relevant to the cryosphere in the region.

Our focus

Networking

The CryoHub links regional institutions conducting cryosphere-related research and provides a platform through which a common approach to data sharing is being promoted to improve our understanding of water resources and their management in the HKH.

The regional CryoHub is a collaborative effort through which we share and disseminate data and information using a network of national partners from and beyond our RMCs. It serves as a clearing house for cryosphere-related data and information for relevant operational services and research activities. As a knowledge hub, it integrates geospatial data to support knowledge development and decision making, and builds on capacity building efforts in the HKH for future generations of scientists.

Our activities under the regional CryoHub include:

  • Building a web-based interactive portal for the dissemination and visualization of cryosphere data that includes science applications and story maps
  • Regular publication of quarterly e-bulletins on our cryosphere-related activities
  • Organizing and facilitating conferences, seminars, and workshops
  • Organizing events for regional knowledge sharing

In the spotlight

Hedayatullah Arian

For this issue of HKH CryoHub: In the Spotlight, we are in conversation with Associate Prof. Hedayatullah Arian, Head – Hydrometeorology Department, Kabul University, Afghanistan.

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HKH Data

Glacial lakes in the Koshi, Gandaki, and Karnali river basins of Nepal, the Tibet Autonomous Region of China, and India

The data on glacial lakes in 2015 were derived through a semi-automatic method using Landsat imagery from 2015 to 2016. The Normalized Difference Water Index threshold value was used for classification. Further, the lake boundary was revised or manually updated by incorporating those lakes that were missed because of atmospheric and physical processes such as being frozen, covered under snow, or obstructed by shadows and clouds. The mapped glacial lakes were validated and modified where necessary by overlaying the Landsat imagery over previous inventory datasets. They were also cross-checked with high-resolution Google Earth imagery. The attributes of glacial lakes were derived from SRTM DEM, and the data were projected in the WGS UTM projection system. This dataset was prepared to support the Green Climate Fund project proposal formulated by UNDP Nepal.

Potentially dangerous glacial lakes in the Koshi, Gandaki, and Karnali river basins of Nepal, the Tibet Autonomous Region of China, and India

The potentially dangerous glacial lakes were identified on the basis of the glacial lake inventory dataset using Landsat imagery from 2015. The following criteria were used for classifying the lakes: i) lake characteristics, ii) dam characteristics, iii) source/associate glacier characteristics, and iv) physical conditions of surroundings. Various parameters required for classifying such lakes were generated by using 5 m ALOS DEM for Nepal and 12.5 m ALOS DEM for China and India. Data include detailed analyses of land features and conditions using high-resolution images with 3D visualization on Google Earth. The dataset provides the size, type, and altitudinal distribution of such lakes, including the hazard rank of each lake. This dataset was prepared to support the Green Climate Fund project proposal formulated by UNDP Nepal.

ALOS DEM of part of Samdrupjongkhar district in Bhutan

The 5m ALOS DEM was procured from NTT DATA, a company serving as first point of sale of JAXA products.

Status of Glaciers in Wakhan Basin

Digital polygon data of Status of Glaciers in Wakhan Basin during 2005 ± 3 (2002-2008) years. This dataset is created using Landsat ETM+ imageries of respective years. The glacier outlines was derived semi-automatically using object-based image classification (OBIC ) method separately for clean ice and debris cover and further editing and validation was done carefully by draping over the high resolution images from Google Earth. The attribute data were assigned to each glacier using 90m resolution SRTM DEM.

Status of Glaciers in Upper Indus Basin

Digital polygon data of Status of Glaciers in Upper Indus Basin during 2005 ± 3 (2002-2008) years. This dataset is created using Landsat ETM+ imageries of respective years. The glacier outlines was derived semi-automatically using object-based image classification (OBIC ) method separately for clean ice and debris cover and further editing and validation was done carefully by draping over the high resolution images from Google Earth. The attribute data were assigned to each glacier using 90m resolution SRTM DEM.

Meteorological data from Kyanging automatic weather station

Meteorological data from Kyangin Langtang valley, Nepal.

Discussion forum

Community of practice

Changing climate and hydropower

with the changing climate what is its implication in the hydropower sector.

By: abjt
Updated on: 2020-09-29
GLOF

Early Warning system is considered as one of the efficient approach to reduce GLOD risk.

By: amthapa
Updated on: 2020-09-28
This post needs to be approved by moderator

test content whether it will go to moderator for posting or not

By: Manish shrestha
Updated on: 2020-09-28

NEWS AND FEATURES

Around the HKH

Resources

Publications

Glacial Lake Outburst Flood (Glofs)
The melting Himalayas: Regional challenges and local impacts of climate change on mountain ecosystems and livelihoods

This policy summary looks at reported and possible future consequences of climate change in the greater Himalayan region.

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Glofs
Inventory of glaciers, glacial lakes, and Glacial Lake Outburst Floods: Monitoring and Early Warning Systems in the Hindu Kush Himalayan Region – Bhutan

Himalayan glaciers are retreating; the resultant long-term loss of natural fresh water storage will have as yet uncalculated effects.

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Snow-cover mapping and monitoring in the Hindu Kush Himalaya

Snow is an important component of the cryosphere, and the study of snow trends is essential for understanding regional climate change and for managing water resources.

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The status of glacial lakes in the Hindu Kush Himalaya

This is the first comprehensive report on the distribution of glacial lakes for the HKH providing baseline data for further investigation of glacial lakes, GLOF hazards and risk assessments, and mitigation measures.

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Partners

The HKH CryoHub profile

comstat
COMSATS University
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imhe
Institute of Mountain Hazards and Environment
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kabul university
Kabul University
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Wadia Institute of Himalayan Geology
Wadia Institute of Himalayan Geology
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Resources and information for the media

Press releases

Landmark study: Two-degree temperature rise could melt half of glaciers in Hindu Kush Himalaya region, destabilizing Asia’s rivers

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