Dataset specification
- Title: GeoBasis Zackenberg - Snow properties - Snow density (bulk density)
- Description: Snow bulk density is measured manually in various places in the Zackenberg valley, during snow covered periods. In this dataset every position is given with its UTM coordinates (WGS 84, UTM Zone 27N) and with the name of the location, where measurements are conducted in the vicinity of existing plots. The densities are never sampled within the existing plots (unless otherwise stated), but in a radius of at least 10 meters from the plot, in an area in which the conditions and characteristics of the snowpack are similar to the given plot. The positions of all the locations are given here in UTM coordiantes (WGS 84, UTM Zone 27N). In cases where total snow depth is missing, snow depth was larger than the measuring equipment, see remarks. Snow properties:Snow properties GeoBasis Zackenberg:The GeoBasis monitoring programme focuses on selected abiotic characteristics in order to describe the state of Greenlandic terrestrial environments and their potential feedback effects in a changing climate. Monitored plot data is up-scaled to a landscape level and is used to improve ecosystem models to be able to quantify these feedback mechanisms. The GeoBasis programme provides an active response to recommendations in international assessments such as ACIA and SWIPA; and is continuously being adapted based on AMAP and other international founded recommendations. Furthermore, the GeoBasis programme is directly involved in several international networks and research projects (e.g. the Circumpolar Active Layer Monitoring (CALM) programme, the Nordic Centre of Excellence DEFROST, the Danish Centre of Excellence CENPERM, the EU-projects PAGE21 and INTERACT, and the Arctic Research Centre at Aarhus University). The GeoBasis programme is divided into a number of sub-groups, including:
- DOI: 10.17897/VPCQ-HR29 - https://doi.org/10.17897/VPCQ-HR29
- Location/site: Zackenberg_valley - -20.57, 74.47 (lon-lat wgs84)
- Date span of the dataset: 2004-06-02 - 2019-05-21
Data originator, license and how to download the dataset
The dataset is a product of the Greenland Ecosystem Monitoring program (GEM): https://grid.ac/institutes/grid.507580.f. It is free and open data, licensed with terms of use under the Creative Commons CC-BY-SA license: https://creativecommons.org/licenses/by-sa/4.0/ When downloading you will automatically get a terms of use document, describing how to cite the data and other important information.
Download the dataset via this link (registration needed): http://data.g-e-m.dk/log-in/data-tables?doi=10.17897/VPCQ-HR29
Variables measured / columns in dataset
ID | Name | Unit | Data Type | Description |
---|---|---|---|---|
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Date | Date | YYYY-MM-DD | Date | |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Time | Time | HH:MM | Time | |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Location | Location | - | Text | Name of location, where densities are taken near existing plots |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Northing_mN | Northing_mN | M | Number | Positions are given in UTM coordinates (WGS 84, UTM Zone 27N) |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Easting_mE | Easting_mE | M | Number | Positions are given in UTM coordinates (WGS 84, UTM Zone 27N) |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Sampling_method | Sampling_method | - | Text | Equipment used to take sample |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Total_snow_depth_cm | Total_snow_depth_cm | Cm | Number | Snow depth measured manually in cm |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Density_g_cm-3 | Density_g_cm-3 | g cm-3 | Number | Computed density of the snow sampled in grams per cubic centimeter |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Remarks | Remarks | - | Text | General remarks about the condition of the snowpack, any comments about the sampling, etc. |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Altitude_m_a.s.l. | Altitude_m_a.s.l. | M | Number | Altitude above sea level, given in meters |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Total_snow_depth_cm_rep12 | Total_snow_depth_cm_rep12 | Cm | Number | Snow depth measured manually in cm, replicate 2, if it exists |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Total_snow_depth_cm_rep13 | Total_snow_depth_cm_rep13 | Cm | Number | Snow depth measured manually in cm, replicate 3, if it exists |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Density_g%2fcm3_rep2 | Density_g/cm3_rep2 | g cm-3 | Number | Computed density of the snow sampled in grams per cubic centimeter, replicate 2, if it exists |
http://data.g-e-m.dk/datasets?doi=10.17897/VPCQ-HR29&column=Density_g%2fcm3_rep3 | Density_g/cm3_rep3 | g cm-3 | Number | Computed density of the snow sampled in grams per cubic centimeter, replicate 3, if it exists |