Esthwaite Water Surface Temperature, Oxygen, and Chemistry Data for 2025

Long-term monitoring at Esthwaite Tarn in Cumbria, England, began in 1945 for some variables. This dataset contains 2025 measurements of surface temperature, oxygen, water clarity, and chemistry from fortnightly sampling by the UK Centre for Ecology & Hydrology. Water samples were typically integrated from 0 to 5 meters, with specific sampling coordinates provided.

Use Cases

• Modeling seasonal phytoplankton dynamics based on chlorophyll a and nutrient concentrations.
• Analyzing long-term trends in water quality based on parameters like alkalinity, pH, and nutrient levels.
• Correlating surface temperature and oxygen saturation with meteorological data for climate studies.
• Assessing water clarity trends using Secchi depth measurements over time.

Strengths

• Data collection began in 1945 for some variables, providing a long-term context.
• Measurements include 12 distinct physical and chemical parameters for a full calendar year (2025).
• Sampling methodology is documented, including specific GPS coordinates and a flag for shore-based sampling events.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Detection limits for several analytes (NH4N, TON, TOTP, SIO2) are reviewed annually and can fluctuate.

Provenance

Source

UK Centre for Ecology & Hydrology (UKCEH), hosted by the Environmental Information Data Centre.

Collection Method

Fortnightly sampling from a boat at a marked location (or from shore when inaccessible), with water samples integrated from 0-5m.

Time Range

January 2025 to December 2025 (with long-term monitoring context from 1945).

Freshness

Last updated 2026-04-30 12:09:32.736992; freshness should be verified.

Geography

Esthwaite Tarn, Cumbria, England, UK (Latitude: 54.36182, Longitude: -2.985597).