Data from: Greenhouse gas emissions from reservoir water surfaces: a new global synthesis

Collectively, reservoirs created by dams are thought to be an important
source of greenhouse gases (GHGs) to the atmosphere. So far, efforts to
quantify, model, and manage these emissions have been limited by data
availability and inconsistencies in methodological approach. Here, we
synthesize reservoir CH4, CO2, and N2O emission data with three main
objectives: (1) to generate a global estimate of GHG emissions from
reservoirs, (2) to identify the best predictors of these emissions, and
(3) to consider the effect of methodology on emission estimates. We
estimate that GHG emissions from reservoir water surfaces account for 0.8
(0.5–1.2) Pg CO2 equivalents per year, with the majority of this forcing
due to CH4. We then discuss the potential for several alternative pathways
such as dam degassing and downstream emissions to contribute significantly
to overall emissions. Although prior studies have linked reservoir GHG
emissions to reservoir age and latitude, we find that factors related to
reservoir productivity are better predictors of emission.

学界普遍认为，大坝构筑形成的水库是向大气排放温室气体（Greenhouse Gases, GHGs）的重要来源。迄今为止，针对这类排放开展量化、建模与管控的相关研究，均受限于数据可得性不足与研究方法路径不一致等问题。本研究整合水库甲烷（CH4）、二氧化碳（CO2）与一氧化二氮（N2O）排放数据，核心目标共有三项：（1）估算全球水库温室气体排放总量；（2）明确该类排放的最优预测因子；（3）探究研究方法对排放估算结果的影响。本研究估算得到，水库水体表面的温室气体排放年均达0.8（0.5–1.2）Pg二氧化碳当量，其中甲烷（CH4）是该辐射强迫的主要贡献源。随后，本研究还探讨了大坝脱气、下游排放等若干替代排放路径对总排放量的显著贡献潜力。尽管既往研究已将水库温室气体排放与水库年龄、纬度建立关联，但本研究发现，与水库生产力相关的因子是更优的排放预测因子。

搜集汇总

背景与挑战

背景概述

该数据集提供了全球水库水面温室气体排放的综合研究数据，包括CH4、CO2和N2O的排放估计及其预测因素。数据集包含两个版本的Excel文件，详细记录了水库温室气体通量和相关预测变量，旨在帮助量化、建模和管理水库温室气体排放。