Global high-resolution gridded dataset of N2O emission and mitigation potential (GhrdNEv1.0) from Maize and Wheat fields

The high-resolution N2O emission and mitigation potential dataset covers the globe (-179.9581 to 179.9812 degrees east and 83.59216 to -89.92174 degrees north) at 0.0833°x 0.0833° spatial resolution from maize and wheat fields at annual temporal resolution. It comprises estimation from four empirical N2O emission models; (a) CCAFS-MOT , (b) IPCC Tier-I , (c) IPCC Tier-II and (d) Tropical-N2O given in a NetCDF datasets. Description of the NetCDF data structure: Two data files are present containing estimated values from Maize and Wheat fields. The metadata in the individual NetCDF files describes the individual variables. The data has three dimensions namely "latitude", "longitude" and "Nreduction" in a global latitude-longitude coordinate. The "Nreduction" dimension variable has 5 levels (0%, 25%, 50%, 75%, 100%), describing the percentage amount of reduced excess nitrogen to each variable/model. The no data value is decoded by the value “-9999”. The variable names comprising the estimated values from the four empirical N2O emission models are described as follows. Where: (a) “N2O.ccafsMOT”: estimated emission values from CCAFS-MOT (b) “N2O.ipccTR1”: estimated emission values from IPCC Tier-I (c) “N2O.ipccTR2”: estimated emission values from IPCC Tier-II (d) “N2O.tropicalN2O”: estimated emission values from Tropical-N2O高分辨率氧化亚氮（N₂O）排放与减排潜力数据集覆盖全球范围（东经-179.9581°至179.9812°，北纬-89.92174°至83.59216°），空间分辨率为0.0833°×0.0833°，时间分辨率为年度尺度，数据集基于玉米田与小麦田的观测数据估算得到。该数据集包含4种经验氧化亚氮排放模型的估算结果，分别为(a) CCAFS-MOT、(b) IPCC Tier-I、(c) IPCC Tier-II 及 (d) Tropical-N2O，数据以NetCDF数据集格式存储。 NetCDF数据结构说明如下： 数据集包含两个数据文件，分别存储玉米田与小麦田的氧化亚氮排放估算值。各NetCDF文件中的元数据可对各自包含的变量进行详细说明。该数据集包含三个维度，即全球经纬度坐标系下的"latitude"、"longitude"与"Nreduction"。其中"Nreduction"维度变量包含5个水平（0%、25%、50%、75%、100%），用于表征施加于各变量/模型的过量氮肥施用量削减百分比。无数据值以"-9999"进行编码标识。 代表4种经验氧化亚氮排放模型估算结果的变量名称说明如下： (a) "N2O.ccafsMOT"：CCAFS-MOT模型对应的氧化亚氮排放估算值 (b) "N2O.ipccTR1"：IPCC Tier-I模型对应的氧化亚氮排放估算值 (c) "N2O.ipccTR2"：IPCC Tier-II模型对应的氧化亚氮排放估算值 (d) "N2O.tropicalN2O"：Tropical-N2O模型对应的氧化亚氮排放估算值