Llyn Tegid Automatic Monitoring Station

Year-to-year changes in the weather have a major effect on the water quality in many freshwater lakes. For example, periods of heavy rain transport more nutrients from the surrounding land while periods of warm, calm weather during the summer promote the growth of cyanobacteria.


Llyn Tegid, in Snowdonia, is a deep lake that periodically develops short-lived blooms of cyanobacteria. An automatic station was installed in Llyn Tegid in October 2006 to monitor its response to extreme variations in the weather. This station is fitted with a range of meteorological sensors, a chain of water temperature sensors to record the mixing characteristics of the lake and optical sensors to monitor the spatial distribution of the algae.


This dataset includes raw data on parameters recorded by the station at hourly intervals such as conductivity, barometric pressure, mean chlorophyll a, temperature at varying depths, wind speed and direction, solar radiation etc. The reports include an analysis of this data and a review of technical performance of the station.


The purpose of this data capture was to monitor the response of Llyn Tegid to variations in the weather and support more detailed studies on the climatic sensitivity of the lake.

Identification

Identifier
NRW_DS101837
Metadata Language
English
Lineage

A Lake Dynamics Monitoring Station (LDMS) was installed. The system is based on two components: the Buoy Station deployed on the lake and the Remote Station used to download the acquired data to a remote site.


Data is supplied to NRW on an annual basis.
Dataset Reference Date (Publication)
2015-03-31

Temporal Extent

Begin date
2006-10-01
End date
2015-01-01
 
Topic category
  • Environment
  • Climatology, meteorology, atmosphere
Owner
  Snowdonia National Park Authority -
National Park Office, Penrhyndeudraeth, Gwynedd, LL48 6LF, Wales
http://www.eryri-npa.gov.uk/
Owner
  University of Wales, Aberystwyth -
Old College, King Street, Aberystwyth, Ceredigion, SY23 2AX, Wales
http://www.aber.ac.uk/en
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  University of Wales, Aberystwyth -
Old College, King Street, Aberystwyth, Ceredigion, SY23 2AX, Wales
http://www.aber.ac.uk/en
 

Extent

Extent

Geographic Extent
Wales (WLS)
Geographic Extent
GWYNEDD - GWYNEDD
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Distribution

Format Type and Description
  • Documents ( Unknown )

    Specification

    Reports in PDF format

  • Delimited ( Unknown )

    Specification

    Raw data in excel spreadsheets

 

Quality

Data quality

Quality Scope
Dataset
Conformity
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation

This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree
false
Lineage

A Lake Dynamics Monitoring Station (LDMS) was installed. The system is based on two components: the Buoy Station deployed on the lake and the Remote Station used to download the acquired data to a remote site.


Data is supplied to NRW on an annual basis.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • Llyn Tegid
  • nutrients
  • cyanobacterial blooms
  • marine and freshwater inventory
  • weather
  • meteorology (see also weather) (see also climate)
  • monitoring (see specific types of monitoring eg. woodland monitoring)
Type
Theme

Citation

Date (Publication)
2026-08-27
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
Latitude and Longitude (EPSG::4326)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

Llyn Tegid monitoring station 2006-2010 : report no. 1
NRW Related Title

Llyn Tegid monitoring station 2006-2010 : report no. 2
NRW Related Title

Llyn Tegid monitoring station 2006-2010 : report no. 3
NRW Related Title

Llyn Tegid monitoring station 2006-2010 : report no. 4
NRW Related Title

Llyn Tegid monitoring station report no. 5
NRW Related Title

Llyn Tegid monitoring station 2011 - 2013 report no. 6
NRW Related Title

Llyn Tegid monitoring station 2013
NRW Related Title

Llyn Tegid monitoring station 2014
 

Constraints

Constraints

Limitations on Public Access and Use

Restriction type
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

This data is jointly owned by Natural Resources Wales (NRW), Snowdonia National Park Authority (SNPA) and University of Wales Aberystwyth. There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Use constraints type
Other restrictions
Other constraints

© CNC/NRW, SNPA, Aberystwyth University. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
 

Attribution Statement

Other constraints

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. © Snowdonia National Park Authority. © Aberystwyth University.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313031383337 XML
Metadata Language
English
Resource type
Dataset
Metadata Date
2026-09-29T14:34:45.08Z
Metadata Standard Name
NRW
Metadata Standard Version

1.0

pointOfContact
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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