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Microclimate data from Coal Nunatak, Alexander Island, 2006-2019 [Version 2.0]

Microclimate data collected hourly at Coal Nunatak, for 10 climatic variables via automatic data loggers, 2006-2019. Data is not available across the entire temporal range for all variables. NERC funded under the British Antarctic Survey National Capability programme, Polar Science for Planet Earth.

This is an updated version of this dataset. There have been changes to the quality control carried out in the updated data.

Simple

Alternate title
Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01598
Date (Publication)
2024-04-23
Identifier
http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01598
Custodian
  British Antarctic Survey
High Cross, Madingley Road , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Originator
  British Antarctic Survey - Polar Data Centre
High Cross, Madingley , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Maintenance and update frequency
unknown Unknown
Keywords
  • NDGO0001
NERC OAI Harvesting
  • NERC_DDC
GCMD Parameter Valids
  • EARTH SCIENCE > Atmosphere > Atmospheric Temperature > Air Temperature
  • EARTH SCIENCE > Land Surface > Frozen Ground > Soil Temperature
BAS Free-text keywords
  • Antarctica
  • loggers
  • microclimate
  • micrometeorological
  • temperature
Use limitation
This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.
Access constraints
otherRestrictions Other restrictions
Other constraints
This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.
Metadata language
EnglishEnglish
Topic category
  • Biota
  • Climatology, meteorology, atmosphere
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Begin date
2006-01-31
End date
2019-02-13
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
Distributor
  Polar Data Centre - British Antarctic Survey
+44 (0)1223 221400
Protocol
http
Name
GET DATA
Function
download Download
Hierarchy level
dataset Dataset

Domain consistency

Measure identification
INSPIRE / Conformity_001

Conformance result

Date
Explanation
See the referenced specification
Pass
No
Statement

Quality control was carried out on this publication [Version 2.0] of the data. Specifically, we checked the data for outliers on variables which we concluded followed a normal distribution. A z-score calculation was carried out using the following equation:

abs(x_i - mean(x_month)) / stddev(x_month)

where we took the absolute value of the variable [x_i], then subtracted x_i by the mean of x_i values measured in that month [x_month] (using the DATE column), and then divided over the standard deviation of x_i values measured in that same month [stdev_x_month]. Using values only within the same month was to constrain the calculation to a range of values subject to seasonal variation, that would otherwise yield results that could include, for example, temperatures expected during the summer as well as the winter.

These values were then categorised into three groups: z-scores under 3, between 3-6, and above 6. An additional column was then created alongside each parameter denoting whether the z-score for that value was under 3 (denoted as ''1''), between 3 and 6 (denoted as ''2''), or above 6 (denoted as ''3''). This is to give users the option to filter values in the data that have been flagged as potential outliers based on the z-score calculation above.

Due to the harsh conditions in Coal Nunatak, data has not been recorded continually across the period. Missing values, where data was not recorded, are included in the dataset.

The exact locations of sensors within the soil does change over time due to environmental conditions, so depths recorded are a guide.

For columns ''wind speed'' and ''wind direction'', values of 0 may indicate that the sensor was frozen.

File identifier
GB_NERC_BAS_PDC_01598 XML
Metadata language
EnglishEnglish
Hierarchy level
dataset Dataset
Date stamp
2024-04-23
Metadata standard name
NERC profile of ISO19115:2003
Metadata standard version
1.0
Point of contact
  British Antarctic Survey
+44 (0)1223 221400
Dataset URI
http://www.antarctica.ac.uk/dms/metadata.php?id=GB/NERC/BAS/PDC/01598
 
 

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