#### Dataset specification

- Title: GeoBasis Zackenberg - Soil properties - M5_720min
- Description: M5 was located in a wet fen area called 'Rylekæret', just 20 meters North of the Automatic Chamber site. The station was in operation 2009 - 2017. Soil temperatures in 2, 20, 30, 40 and 50 cm is recorded every 10 and 720th minute, using Campbell scientific T107 thermocouples. Soil temperature is also measured in 2,8,12 and 16 cm, using East 30 Sensors, thermal conductivity sensors. Every 12th hour these conductivity sensors emit a heat pulse and from this the volumetric heat capacity and thermal conductivity is computed. Volumetric heat capacity and thermal conductivity is only published for periods where the soil is thawed. Due to a flood of the station in spring 2015, conductivity measurements from 2015 are missing. 2017: Due to technical problems, the M5 station was terminated in August. Soil properties:Soil 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: 10.17897/6F1A-SG21 - https://doi.org/10.17897/6F1A-SG21
- Location/site: M5_720min - -20.55568385, 74.4793063 (lon-lat wgs84)
- Date span of the dataset: 2009-10-04 - 2017-05-29

#### 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=10.17897/6F1A-SG21

#### Variables measured / columns in dataset

ID | Name | Unit | Data Type | Description |
---|---|---|---|---|

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Date | Date | YYYY-MM-DD | Date | |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Time | Time | HH:MM | Time | |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+0.02m+%c2%b0C | Soil temperature 0.02m °C | °C | Number | Soil temperature in 20 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+0.2m+%c2%b0C | Soil temperature 0.2m °C | °C | Number | Soil temperature in 20 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+0.3m+%c2%b0C | Soil temperature 0.3m °C | °C | Number | Soil temperature in 30 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+0.4m+%c2%b0C | Soil temperature 0.4m °C | °C | Number | Soil temperature in 40 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+0.5m+%c2%b0C | Soil temperature 0.5m °C | °C | Number | Soil temperature in 50 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+initial+0.02m+%c2%b0C | Soil temperature initial 0.02m °C | °C | Number | Soil temperature in 2 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+initial+0.08m+%c2%b0C | Soil temperature initial 0.08m °C | °C | Number | Soil temperature in 8 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+initial+0.12m+%c2%b0C | Soil temperature initial 0.12m °C | °C | Number | Soil temperature in 12 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Soil+temperature+initial+0.16m+%c2%b0C | Soil temperature initial 0.16m °C | °C | Number | Soil temperature in 16 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Volumetric+Heat+Capacity+0.02m+J%2fm%5e3K | Volumetric Heat Capacity 0.02m J/m^3K | J/m3/K | Number | Volumetric heat capacity in 2 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Volumetric+Heat+Capacity+0.08m+J%2fm%5e3K | Volumetric Heat Capacity 0.08m J/m^3K | J/m3/K | Number | Volumetric heat capacity in 8 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Volumetric+Heat+Capacity+0.12m+J%2fm%5e3K | Volumetric Heat Capacity 0.12m J/m^3K | J/m3/K | Number | Volumetric heat capacity in 12 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Volumetric+Heat+Capacity+0.16m+J%2fm%5e3K | Volumetric Heat Capacity 0.16m J/m^3K | J/m3/K | Number | Volumetric heat capacity in 16 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Thermal+Conductivity+0.02m+W%2fmK | Thermal Conductivity 0.02m W/mK | W/m/K | Number | Thermal conductivity in 2 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Thermal+Conductivity+0.08m+W%2fmK | Thermal Conductivity 0.08m W/mK | W/m/K | Number | Thermal conductivity in 8 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Thermal+Conductivity+0.12m+W%2fmK | Thermal Conductivity 0.12m W/mK | W/m/K | Number | Thermal conductivity in 12 cms depth, measured in degrees Celcius |

http://data.g-e-m.dk/datasets?doi=10.17897/6F1A-SG21&column=Thermal+Conductivity+0.18m+W%2fmK | Thermal Conductivity 0.18m W/mK | W/m/K | Number | Thermal conductivity in 16 cms depth, measured in degrees Celcius |