Stockdale, J. E.; Ineson, P.

Hampshire Avon: trace gas fluxes from experimentally manipulated plots in three sub-catchments

The dataset contains instantaneous fluxes of carbon dioxide, methane and nitrous oxide from intact lysimeters in agricultural grasslands in the Hampshire Avon catchment (UK). Manipulations of soil temperature, soil water saturation, additions of nitrogen, phosphorus and of nitrogen and phosphorus were made at three orthogonal experiments in three sub-catchments of contrasting geology (chalk, clay and greensand). Fluxes of carbon dioxide were directly measured continuously during 2014 and 2015 using automated chamber approach, and fluxes of methane and nitrous oxide were measured in 'campaign' mode. Flux measurements consisted of chamber closure for 180 seconds, except when in 'campaign' mode when measurement periods were extended to 300 seconds.

Publication date: 2017-01-15

Get the data

This dataset is made available under the terms of the Open Government Licence

Format of the dataset : Comma-separated values (CSV)

You must cite: Stockdale, J. E.; Ineson, P. (2017). Hampshire Avon: trace gas fluxes from experimentally manipulated plots in three sub-catchments. NERC Environmental Information Data Centre.


© Natural Environment Research Council


Study area
Temporal extent
2015-03-04    to    2015-09-01

Provenance & quality

All data were generated by the authors. Prior to field deployment, all gas analysers were checked to ensure accuracy (using certified reference gases) and precision (repeated measures) were within accepted tolerance limits. Post hoc analysis of measured concentration of data was subject to a vigorous quality checking procedure, removing data when gas analysers produced unreliable data or failed. Flux calculation also included quality checking to ensure that appropriate linear or exponential curves were fitted, and data was discarded if a poor fit (low R2) was achieved.

Correspondence/contact details

Dr. James Stockdale
University of York
Department of Biology, Heslington
YO10 5DD


Stockdale, J. E.
University of York
Ineson, P.
University of York

Other contacts

Environmental Information Data Centre
NERC Environmental Information Data Centre


Spatial representation type
Tabular (text)
Spatial reference system
WGS 84


Topic categories
Inland Waters
Carbon cycling,  Carbon dioxide flux,  Climate change,  England Flooding,  Greenhouse gas flux,  Hampshire Avon,  Methane flux,  Nitrogen cycling,  Nitrous oxide flux,  Nutrient addition,  River,  United Kingdom