Active layer thickness along PERMVEG-NET

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.

Date (Publication): 2026-04-15

Identifier: https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/979c65e1-eed9-401b-8dc3-e7307e15f12d

Purpose: 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.

Status: On going

principalInvestigator

Università dell'Insubria - Mauro Guglielmin

custodian

Università dell'Insubria - Mauro Guglielmin

Maintenance and update frequency: As needed

Theme

GEMET - INSPIRE themes, version 1.0

Natural risk zones
Environmental monitoring facilities
Soil
Geology

GCMD - Science Keywords

PERIGLACIAL PROCESSES
FROZEN GROUND
FREEZE/THAW
SOILS
PERMAFROST

Keywords

active layer

PNRA project

OSS-12 PNRA14_00127

Research Organization

Università dell'Insubria

GCMD - Providers

IT/PNRA

Use limitation: Creative-Commons CC BY-NC-SA 4.0

Spatial representation type: Text, table

Denominator: 1

Metadata language: English

Character set: UTF8

Begin date: 1997-01-01

End date: 2024-12-31 Now

Unique resource identifier: WGS84

Distribution format

ERDDAP ( 2.24 )

distributor

National Antarctic Data Center - National Antarctic Data Center

originator

Guglielmin - Mauro

OnLine resource: PNRA project ( WWW:LINK-1.0-http--link )

OnLine resource: CALM data temperature permafrost ( WWW:LINK-1.0-http--link )

OnLine resource: NADC ERDDAP Record ( WWW:LINK-1.0-http--link )

OnLine resource: Digital Object Identifier (DOI) ( DOI )

Hierarchy level: Dataset

Domain consistency

Conformance result

Date (Publication): 2010-12-08

Explanation: This data set is conformant with the INSPIRE Implementing Rules for the interoperability of spatial data sets and services

Pass: Yes

Statement: 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).