979c65e1-eed9-401b-8dc3-e7307e15f12d Mauro Guglielmin mauro.guglielmin@uninsubria.it 2026-05-05T10:22:15 ISO 19139 1.0 WGS84 Active layer thickness along PERMVEG-NET 2026-04-15 https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/979c65e1-eed9-401b-8dc3-e7307e15f12d In the Project PermVegNet (OSS-12) there are 14 sites between 73 and 78°S in which shallow boreholes of 1 m of depth are equipped with 4 thermistors (accuracy 0.2°C) placed at 2, 30,60, 100 or the maximum depth reachable close to 100 cm) to monitor the thermal regime of the active layer and to obtain one of the essential climatic variables (ECV) the active layer thickness that is the maximum depth of the annual 0°C isotherm. Here are added also other two deeper boreholes (Oasi A8 (31 m); Boulder Clay (3.6 m), where ALT is also determinable. In the same sites also a the air temperature, the soil moisture at 2 cm of depth in the ground and the PAR or PIR are measured to establish their relations to the ground thermal regime. Monitoring the essential climate variables (ECV2 named ALT). The second ECV is the Active Layer Thickness (ALT) that is the maximum annual depth of the isotherm 0°C. In this case this variable is more sensible to the summer energy balance and every year can change quite sensibly. In this case the parameter is not only useful to monitor the Climate Change but also its effects on the landscape and on the ecosystem because from this thickness depend several biologic and abiotic processes including the CO2 and CH4 emission from the ground give an important feedback to the Climate Change. Mauro Guglielmin Università dell'Insubria mauro.guglielmin@uninsubria.it Mauro Guglielmin Università dell'Insubria mauro.guglielmin@uninsubria.it https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/979c65e1-eed9-401b-8dc3-e7307e15f12d/attachments/figurasititerravitpermvegnet.jpg https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/979c65e1-eed9-401b-8dc3-e7307e15f12d/attachments/capechocolat.png Natural risk zones Environmental monitoring facilities Soil Geology GEMET - INSPIRE themes, version 1.0 2008-01-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme PERIGLACIAL PROCESSES FROZEN GROUND FREEZE/THAW SOILS PERMAFROST GCMD - Science Keywords 2015-01-01 geonetwork.thesaurus.external.theme.gcmd-sciencekeywords active layer OSS-12 PNRA14_00127 PNRA project 2024-03-18 geonetwork.thesaurus.external.theme.PNRAproject Università dell'Insubria Research Organization 2024-03-18 geonetwork.thesaurus.external.theme.Research_Organization IT/PNRA GCMD - Providers 2023-07-24 geonetwork.thesaurus.external.theme.thesaurus Creative-Commons CC BY-NC-SA 4.0 1 156.6134 168.3054 -77.4009 -72.5909 1997-01-01 2024-12-31 ERDDAP 2.24 National Antarctic Data Center National Antarctic Data Center Mauro Guglielmin mauro.guglielmin@uninsubria.it https://www.pnra.aq/it/project/718/rete-di-monitoraggio-del-permafrost-e-della-vegetazione-antartide-continentale WWW:LINK-1.0-http--link PNRA project http://www.gwu.edu/~calm WWW:LINK-1.0-http--link CALM data temperature permafrost https://antarcticdatacenter.cnr.it/erddap/info/75479049-d0e0-4512-98bb-379b629af911/index.html WWW:LINK-1.0-http--link NADC ERDDAP Record https://doi.org/10.71698/979c65e1-eed9-401b-8dc3-e7307e15f12d DOI Digital Object Identifier (DOI) COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 This data set is conformant with the INSPIRE Implementing Rules for the interoperability of spatial data sets and services true The ALT (ECV 2) is the depth (m) of the 0°C isotherm obtained through the linear interpolation between the maximum daily mean temperature at two depth Z1 and Z2 of which Z 1 is the deepest depth with the maximum annual temperature above 0°C and Z2 is the first upper depth with the maximum annual temperature below 0°C. Datasets are initially uploaded to the NADC ERDDAP instance with restricted access (authentication required). They will be made publicly available following publication of the associated paper. For further information, please contact the Principal Investigator (PI).