Part of UKCEH UKCEH logo
UKCEH website
Deshpande, A.G. et al

Meteorological data and ammonia concentration and deposition rates from an ammonia enhancement experiment site, Queensberry, Sri Lanka, 2022

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

Download the data
https://doi.org/10.5285/998c2b2b-7470-42b0-81e7-409b91752377
This dataset contains information about meteorological conditions and ammonia concentration and deposition rates resulting from an experimental setup. An NH3 enhancement experiment along with a full suite of multi-height meteorological measurements was established in a tropical forest in central Sri Lanka. Under suitable wind conditions measured at the meteorological tower, NH3 is released towards two monitoring transects. Along the downwind monitoring transects, NH3 concentrations in the air are measured using monthly passive samplers. Deposition rates are modelled using a bi-directional resistance model based on measured NH3 concentrations in the air, micrometeorology and plant physiology. Additionally, NH3 concentrations were measured at high temporal resolution at a fixed downwind distance from the source to achieve the target enhancement concentrations.

The work was supported by UKRI GCRF South Asian Nitrogen Hub (Grant NE/S009019/1).
Publication date: 2024-03-26
23 downloads *
729 views *

More information

View numbers valid from 26 March 2024 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
2022-01-01    to    2022-12-31

Provenance & quality

Meteorological parameters such as temperature, relative humidity, total solar radiation, photosynthetically active radiation, wind speed and wind direction were measured at four heights starting from the ground level to above-canopy. The measurements were made on a 12 m tall mast. Additionally, soil moisture, temperature and electric conductivity was measured at three depths. All instruments measured data every 20 seconds and the average was calculated over fifteen-minute intervals through a data logger. NH3 enhancement was conducted by releasing the gas from a pure anhydrous NH3 cylinder. A mass flow controller (MFC) released pre-programmed volume of NH3 under suitable wind conditions and the release volume and time is recorded on the datalogger at one-minute intervals. The meteorological and NH3 enhancement data was checked visually, and any obvious errors introduced by instrument malfunctioning, datalogger programming issues and power cuts were removed. NH3 concentrations were measured downwind of the source using UKCEH Adapted Low-cost Passive High Absorption (ALPHA) samplers and analysed monthly. NH3 concentrations not following the regular exponentially declining curve with distance from the source were removed. Monthly dry deposition of NH3 to different layers of the canopy was modelled using a bi-directional resistance model written in R. At a distance of 10 m downwind of the NH3 source, NH3 concentrations were measured using a Picarro high-resolution analyser at a frequency of 1 Hz and averaged over one-minute intervals. The analyser had inlets at four different heights to understand the vertical movement of the gas. The analyser was operated as a part of a measurement campaign. The data was checked visually and any obvious errors introduced by instrument malfunctioning, LabVIEW inlet switching programming issues and power cuts were removed. Gaps introduced during inlet switching were filled by linear interpolation.

Licensing and constraints

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

Cite this dataset as:
Deshpande, A.G.; Jones, M.R.; Mullinger, N.J.; Harvey, D.; Nicoll, R.; van Dijk, N.; Grenier, M.; Toteva, G.; Weerakoon, B.; Nissanka, S.P.; Prabhashwara, T. (2024). Meteorological data and ammonia concentration and deposition rates from an ammonia enhancement experiment site, Queensberry, Sri Lanka, 2022. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/998c2b2b-7470-42b0-81e7-409b91752377

Citations

Deshpande, A.G., Jones, M.R., van Dijk, N., Mullinger, N.J., Harvey, D., Nicoll, R., Toteva, G., Weerakoon, G., Nissanka, S., Weerakoon, B., Grenier, M., Iwanicka, A., Duarte, F., Stephens, A., Ellis, C.J., Vieno, M., Drewer, J., Wolseley, P.A., Nanayakkara, S., Prabhashwara, T., Bealey, W.J., Nemitz, E., Sutton, M.A., 2024. Estimation of ammonia deposition to forest ecosystems in Scotland and Sri Lanka using wind-controlled NH3 enhancement experiments. Atmos. Environ. 120325. doi:10.1016/j.atmosenv.2023.120325 http://dx.doi.org/10.1016/j.atmosenv.2023.120325

Correspondence/contact details

Deshpande, A.G.
UK Centre for Ecology & Hydrology
Lancaster Environment Centre, Library Avenue, Bailrigg
Lancaster
Lancashire
LA1 4AP
UNITED KINGDOM
 enquiries@ceh.ac.uk

Authors

Deshpande, A.G.
UK Centre for Ecology & Hydrology
Jones, M.R.
UK Centre for Ecology & Hydrology
Mullinger, N.J.
UK Centre for Ecology & Hydrology
Harvey, D.
UK Centre for Ecology & Hydrology
Nicoll, R.
UK Centre for Ecology & Hydrology
van Dijk, N.
UK Centre for Ecology & Hydrology
Grenier, M.
UK Centre for Ecology & Hydrology
Toteva, G.
UK Centre for Ecology & Hydrology
Weerakoon, B.
University of Peradeniya
Nissanka, S.P.
University of Peradeniya
Prabhashwara, T.
Dilmah Conservation

Other contacts

Rights holder
UK Centre for Ecology & Hydrology
Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk

Additional metadata

Topic categories
climatologyMeteorologyAtmosphere
Keywords
ammonia , Climate and climate change , compensation point , enhancement , field release , meteorology , pollutant deposition , Queensberry , resistance modelling , Sri Lanka , tropical forest
Funding
Natural Environment Research Council Award: NE/S009019/1
Last updated
03 April 2024 10:20