Name of Network |
Areas of particular focus |
GTN-related ECVs |
Data information |
|---|
|
Global Terrestrial Network for Glaciers (GTN-G) |
Climate Change - Human Settlements - Land Resources - Sustainable Development - Global Sea Level Rise - Water Resources - Natural Hazards |
Snow Cover, Glaciers and Ice Caps, Ice Sheets, (Sea Level) |
On global scale; regularly updated information on glacier distribution and changes; fluctuations database at WGMS with > 3,500 glaciers since 19th century; inventory database at NSIDC with > 100,000 glaciers from mid 20th and early 21st centuries |
|
Global Terrestrial Network for Hydrology (GTN-H) |
Agriculture - Biodiversity - Climate Change - Desertification - Forests - Health - Human Settlements - Land Resources - Sustainable Development - Water and Sanitation |
Precipitation, Water Vapour, River Discharge, Ground Water, Water Use, Lakes, Glaciers and Ice Caps, Soil Moisture |
On global and regional scale (national monitoring programmes, science programmes); data from 1900 onwards (single variables, discontinuous) |
|
Global Terrestrial Network for Lakes (GTN-L) |
Biodiversity - Climate Change - Human Settlements - Land Resources - Sustainable Development |
Lakes (Lake Level, Lake Area, Water Temperature, Ice Thickness) |
Mainly on regional basis (> 600 water level reference stations); monthly and annual data input |
|
Global Terrestrial Network for Permafrost (GTN-P) |
Biodiversity - Climate Change - Human Settlements - Land Resources - Sustainable Development |
Permafrost, (Ice Sheets, Snow Cover) |
Mainly on regional and national basis (80-site network under IPA's Circumpolar Active Layer Monitoring (CALM); inventory and metadata for > 200 boreholes of varying depths) |
|
Global Terrestrial Network for Rivers (GTN-R) |
Agriculture - Climate Change - Desertification - Health - Human Settlements - Land Resources - Sustainable Development - Water and Sanitation |
River Discharge, (Water Use, Lakes, Soil Moisture) |
Mainly on regional basis (> 450 river discharge reference stations); daily data input; highly dependent on data provided by National Hydrological Services (NHS) |
