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1. Guidelines for data upload

The insertion of a new Permafrost Evidence is allowed only after registration and login.

There are 3 ways to add a new evidence: (i) Home page go on the link "Add a new permafrost evidence", in the upper right corner (ii) Evidence Map menu click on "Add new evidence" iii) Evidence Map menu click on "My Evidence" and then click on the "+" button in the lower left corner of the table.

The insertion form has 4 tabs: (i) Metadata, (ii) Borehole Data, (iii) Ground Surface Temperature Data, (iv) Surface Movement. Tabs can be active or inactive based on the type of evidence you are submitting.

Tooltips: each field of the insertion form has a tooltip (help text) which appears in the right side of the page with instructions and help for compilation. Tooltips are important: suggestions for improving and/or modifications are really appreciated.

Save, Confirm and Cancel buttons: always visible at the bottom of each tab, these buttons allow temporary saves, submissions and canceling of a submitting session. Move the mouse above each button to read the corresponding tooltips.

 

1.1. Tabs Description

Metadata
This tab contains all the information useful to define (i) evidence location, (ii) site characteristics, (iii) permafrost occurence and (iv) data provider contact

Borehole (BH)
This tab, only active for "Borehole" evidence type, displays yearly borehole temperature profile and active layer data. Data providers are asked to submit these data uploading one file containing yearly mean, minimum and maximum temperature data at each measurement depth and one file containing yearly maximum active layer tickness (computed as the maximum depth of the 0°C isotherm) and the date of occurence of maximum active layer tickness. Refer to tooltip instructions and demo files

Ground Surface Temperature (GST)
This tab is always active because GST measures are often combined with other evidence type. This tab displays yearly GST data. Data providers are asked to submit these data uploading one file containing yearly mean, minimum and maximum surface temperature data. Refer to tooltip instructions and demo files

Surface Movement (SM)
This tab is always active because SM measures are often combined with other evidence type. This tab displays yearly SM data. Data providers are asked to submit these data uploading one file containing yearly mean, minimum and maximum surface movement data when more than one measurement point is available. Refer to tooltip instructions and demo files

 

1.2.  Demo Files Description

Borehole temperatures (download the demo file as a template)
File characteristics:
- The file should provide mean, max and min temperature for each sensor at yearly aggregation (hydrological year).
- The data should be provided as CSV (comma separated values) files using point (.) as decimal separator.
- The first line contains the variable names (header) that must be exactly the same as in the demo file.
- Missing values must be indicated by NA
- Temperature data must be expressed in °C
Column description:
Year_[yyyy] = hydrological year (e.g. 2012=01.10.2011-30.09.2012)
Depth_[m] = measurement depth. If you have 10 sensors in the borehole you have 10 lines for each Year (i.e. one line for each depth)
Tmean_[degC] = mean annual temperature at each depth
Tmax_[degC] = annual maximum of mean daily temperature at each depth
Tmin_[degC] = annual minimum of mean daily temperature at each depth

Active Layer Thickness (download the demo file as a template)
File characteristics:
- The file should provide the maximum active layer thickness of each year of observation.
- The data should be provided as CSV (comma separated values) files using point (.) as decimal separator.
- The first line contains the variable names (header) that must be exactly the same as in the demo file
- Missing values must be indicated by NA
- ALT must be expressed in meters
Column description:
- Year_[yyyy] = hydrological year (e.g. 2012=01.10.2011-30.09.2012)
- ALT_[m] = yearly maximum depth of 0°C isotherm
- ALT_Date_[dd/mm/yyyy] = the date when the maximum depth of 0°C isotherm is reached

Ground Surface Temperature (download the demo file as a template)
File characteristics:
- The file should provide mean, max and min ground surface temperature at yearly aggregation (hydrological year).
- The data should be provided as CSV (comma separated values) files using point (.) as decimal separator.
- The first line contains the variable names (header) that must be exactly the same as in the demo file.
- Missing values must be indicated by NA
- Temperature data must be expressed in °C
Column description:
- Year = hydrological year (e.g. 2012= 01.10.2011 - 30.09.2012)
- Depth_[m] = measurement depth
- GST_mean_[degC] = mean annual temperature
- GST_max_[degC] = annual maximum of mean daily temperature
- GST_min_[degC] = annual minimum of mean daily temperature

Surface Movement (download the demo file as a template)
File characteristics:
- The file should provide mean, max and min surface movement rate at yearly aggregation (hydrological year).
- The data should be provided as CSV (comma separated values) files using point (.) as decimal separator.
- The first line contains the variable names (header) that must be exactly the same as in the demo file.
- Missing values must be indicated by NA
- Movement rates must be expressed in meters/year
Column description:
- Year_[yyyy] = hydrological year (e.g. 2012= 01.10.2011 - 30.09.2012)
- Vel_mean [m/y] = mean surface velocity
- Vel_max [m/y] = maximum surface velocity
- Vel_min [m/y] = minimum surface velocity
In case of multiple measurement points (e.g. 20 points over a rock glacier) provide mean, max and mean of the site.

 

2. Guidelines for Data processing

...coming soon

2.1. Correction of MAGST on steep rock faces

 

2.2. MAGST

 

2.3. ALT