Global wetland CH4 emissions for 2000-2021

This repository contains all the data needed to reproduce the results in Zhang et al., 2023. Zhang Z., Poulter, B., Feldman A., Ying Q., Ciais P., Peng S., Li X., 2023. Recent intensification of wetland methane feedback, in revision in Nature Climate Change. The files are two estimates for global wetland methane emissions simulated by LPJ-wsl model for the period of 2000-2021 and a mask used for defining regions. The ground-based input dataset is a monthly climatic observation based on meteorological stations developed by Climatic Research Unit (CRU), University of East Anglia. The reanalysis-based climate dataset is a daily climatic dataset from 1 hourly reanalysis Modern-Era Retrospective analysis for Research and Applications Version2 (MERRA2). The unit of wetland CH4 emissions is g CH4 mon-1 per 0.5deg cell area. For more details about LPJ-wsl model, see Zhang et al., (2017, 2018). References: Zhang, Z., Zimmermann, N.E., Stenke, A., Li, X., Hodson, E.L., Zhu, G., Huang, C., Poulter, B., 2017. Emerging role of wetland methane emissions in driving 21st century climate change. Proceedings of the National Academy of Sciences 114, 9647–9652. https://doi.org/10.1073/pnas.1618765114 Zhang, Z., Zimmermann, N.E., Calle, L., Hurtt, G., Chatterjee, A., Poulter, B., 2018. Enhanced response of global wetland methane emissions to the 2015–2016 El Niño-Southern Oscillation event. Environmental Research Letters 13, 074009. https://doi.org/10.1088/1748-9326/aac939本仓库包含复现Zhang等人2023年研究成果所需的全部数据。该研究论文作者为Zhang Z.、Poulter B.、Feldman A.、Ying Q.、Ciais P.、Peng S.、Li X.，题为《Recent intensification of wetland methane feedback》，目前已提交至《自然·气候变化》（Nature Climate Change）返修。 本次提供的数据包含LPJ-wsl模型在2000-2021年时段模拟得到的两组全球湿地甲烷（CH4）排放估算结果，以及用于划定研究区域的掩膜文件。其中，地面观测输入数据集为英国东安格利亚大学气候研究部（Climatic Research Unit, CRU）基于气象站观测数据构建的逐月气候观测数据集；再分析气候数据集则来自现代近地面研究与应用再分析资料第二版（Modern-Era Retrospective analysis for Research and Applications Version 2, MERRA-2）的逐小时逐日气候数据集。 湿地甲烷排放的单位为每0.5°网格单元面积内的克甲烷每月（g CH4 mon⁻¹）。如需了解LPJ-wsl模型的更多细节，可参考Zhang等人2017年与2018年的研究成果。 参考文献： 1. Zhang Z., Zimmermann N.E., Stenke A., Li X., Hodson E.L., Zhu G., Huang C., Poulter B., 2017. 湿地甲烷排放在驱动21世纪气候变化中的新兴作用. 美国国家科学院院刊 114, 9647–9652. https://doi.org/10.1073/pnas.1618765114 2. Zhang Z., Zimmermann N.E., Calle L., Hurtt G., Chatterjee A., Poulter B., 2018. 全球湿地甲烷排放对2015-2016年厄尔尼诺-南方涛动事件的增强响应. 环境研究快报 13, 074009. https://doi.org/10.1088/1748-9326/aac939