Methane and carbon dioxide fluxes from a seasonal wetland in the Okavango Delta, Botswana, 2018-2020
Cite this dataset as:
Helfter, C.; Gondwe, M.; Skiba, U. (2021). Methane and carbon dioxide fluxes from a seasonal wetland in the Okavango Delta, Botswana, 2018-2020. NERC Environmental Information Data Centre. https://doi.org/10.5285/2170ebd0-7e6f-4871-97d9-1d42e210468f
Download/Access
PLEASE NOTE: By accessing or using this dataset, you agree to the terms of the relevant licence agreement(s). You will ensure that this dataset is cited in any publication that describes research in which the data have been used.
This dataset is available under the terms of the Open Government Licence 
https://doi.org/10.5285/2170ebd0-7e6f-4871-97d9-1d42e210468f
The dataset consists of a continuous time series of heat (latent and sensible) and trace gas (carbon dioxide and methane) fluxes obtained by eddy-covariance, gas concentrations and some ancillary meteorological data (e.g. air temperature, relative humidity, pressure, photosynthetically active radiation, total incoming radiation, wind speed and direction). The data were collected at Nxaraga, on the south edge of Chief’s Island (19°32'53''S; 23°10'45"E), in the seasonally flooded area of the Okavango Delta, Botswana, for the purpose of quantifying greenhouse gas fluxes from seasonal floodplains. The data is reported at half-hourly interval for the measurement period 01/01/2018 to 31/12/2020. Missing data were caused by instrumentation downtime and are reported as -9999.
Publication date: 2021-05-25
View numbers valid from 01 June 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)
Format
Comma-separated values (CSV)
Spatial information
Study area
Spatial representation type
Tabular (text)
Spatial reference system
WGS 84
Temporal information
Temporal extent
2018-01-01 to 2020-12-31
Provenance & quality
The eddy-covariance instrumentation consisted of a Campbell Scientific IRGASON and a LI-COR 7700 open-path methane (CH4) analyser. A Vaisala WXT520 weather station recorded air temperature, pressure, relative humidity, wind speed and wind direction. Total solar radiation and photosynthetically active radiation (PAR) were measured by a Skye Instruments pyranometer (model SKS1110) and quantum detector (model SKP215), respectively. A Campbell Scientific CR3000 datalogger logged all sensors (sampling rate of 10 Hz for the EC variables and 10-s interval for the meteorological parameters).
The instrumentation was installed by Dr Carole Helfter; monthly maintenance and data collection visits were effected by Dr Mangaliso Gondwe. The raw data were processed into half-hourly fluxes using the EddyPro software package version 7.0.6 and quality controlled by Dr Helfter.
The instrumentation was installed by Dr Carole Helfter; monthly maintenance and data collection visits were effected by Dr Mangaliso Gondwe. The raw data were processed into half-hourly fluxes using the EddyPro software package version 7.0.6 and quality controlled by Dr Helfter.
Licensing and constraints
This dataset is available under the terms of the Open Government Licence
Cite this dataset as:
Helfter, C.; Gondwe, M.; Skiba, U. (2021). Methane and carbon dioxide fluxes from a seasonal wetland in the Okavango Delta, Botswana, 2018-2020. NERC Environmental Information Data Centre. https://doi.org/10.5285/2170ebd0-7e6f-4871-97d9-1d42e210468f
Related
Citations
Helfter, C., Gondwe, M., Murray-Hudson, M., Makati, A., Lunt, M.F., Palmer, P.I., & Skiba, U.(2022). Phenology is the dominant control of methane emissions in a tropical non-forested wetland. Nature Communications, 13(1) https://doi.org/10.1038/s41467-021-27786-4
Correspondence/contact details
Carole Helfter
UK Centre for Ecology & Hydrology
Bush Estate
Penicuik
Midlothian
EH26 0QB
UNITED KINGDOM
enquiries@ceh.ac.uk
Penicuik
Midlothian
EH26 0QB
UNITED KINGDOM
Authors
https://orcid.org/0000-0001-5773-4652
Gondwe, M.
Okavango Research Institute, University of Botswana
Other contacts
Rights holder
UK Centre for Ecology & Hydrology
Custodian
NERC EDS Environmental Information Data Centre
info@eidc.ac.uk
Publisher
NERC Environmental Information Data Centre
info@eidc.ac.uk