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

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).

本数据集收录了某实验装置所获取的气象条件、氨气（NH3）浓度及沉降速率相关数据。研究团队在斯里兰卡中部的热带森林中搭建了氨气强化释放实验平台，并配套开展了全套多高度气象观测。当气象塔监测到适宜风况条件时，向两条监测样带释放氨气。沿下风向监测样带，采用月度被动采样器对空气中的氨气浓度进行测定。基于实测氨气浓度、微气象参数与植物生理特征，借助双向阻力模型对氨气沉降速率开展模拟计算。此外，为达成预设的氨气强化浓度目标，在距排放源固定下风向位置处，采用高时间分辨率方案对氨气浓度进行监测。
本研究受英国研究与创新署（UKRI）全球挑战研究基金（GCRF）南亚氮素研究中心资助（项目编号：NE/S009019/1）。