Surface albedo-induced climate impacts of land use: Global dataset of characterization factors

This dataset provides characterization factors (and associated uncertainty values) for the surface albedo-induced climate impacts of land use and land use changes as described in the article "Global characterization of surface albedo-induced climate impacts of land use in life cycle assessment". When using the dataset, please cite the article and provide reference to this zenodo repository. The characterization factors are provided at a 0.5 degree resolution as .csv files, with each file representing a unique land transition between a reference state and a land occupation type. Each file includes: location information: the latitude and longitude of the center of the grid cell the average monthly and yearly difference in the surface albedo between the reference land cover and the land occupation (denoted by the month followed by 'alb-delta') the average monthly and yearly radiative forcing caused by the change in the surface albedo between the reference land cover and the land occupation (denoted by the month followed by 'RF') in units of W/m2 (normalized to 1 m2 of occupied area) Global warming potentials for 100- and 500- year time horizons, in units of kg CO2e per unit land occupation (m2a) (denoted as GWP100 and GWP500, respectively) The reference state and the land occupation type are indicated in the file name “CF_albedo_XXX-ZZZ_2011-2020.csv” where XXX refers to the land occupation type (see Table 1) and ZZZ refers to the reference state (see Table 2). The data has also been aggregated to larger spatial scales (indicated by "aggregated" included in the file name), where the location information as latitude and longitude values are replaces by location descriptions. Uncertainty measure are provided in separate files named as "CF_uncertainty_XXX-ZZZ.csv" where again XXX refers to the land occupation type (Table 1) and ZZZ refers to the reference state (Table 2). These files include: location information: the latitude and longitude of the center of the grid cell The mean, median, standard deviation, interquartile range (50% confidence interval), and 95% confidence interval for each of the monthly radiative forcings, the yearly-averaged radiative forcing, GWP100 and GWP500 values Table 1: Land occupation codes Land occupation type File name code Croplands (all) crops_12 Croplands (cereal crops) crops_12-7 Croplands (cereal crops) crops_12-8 Pasturelands (all) pasture Pasturelandss (grasslands) pasture_10 Pasturelands (savannas) pasture_9 Pasturelands (open shrublands) pasture_7 Forestry (all) forestry Forestry (evergreen needleleaf) forestry_1 Forestry (evergreen broadleaf) forestry_2 Forestry (deciduous needleleaf) forestry_3 Forestry (deciduous broadleaf) forestry_4 Forestry (mixed species) forestry_5 Water reservoirs hydro Urban/built-up lands urban_13 Table 2: Reference state code Reference state File name code Potential Natural Vegetation (PNV) pnv Current land cover clc Evergreen needleleaf forest lc-1 Evergreen broadleaf forest lc-2 Deciduous needleleaf forest lc-3 Deciduous broadleaf forest lc-4 Mixed forest lc-5 Forest (all types) lc-forest Closed shrublands lc-6 Open shrublands lc-7 Woody savanna lc-8 Savanna lc-9 Grasslands lc-10 Permanent wetlands lc-11 Barren lc-16 .zip containing files for all reference states with codes starting with 'lc' PNV_types本数据集提供了土地利用及土地利用变化由地表反照率（surface albedo）引发的气候影响的特征化因子（characterization factors）及相关不确定性数值，相关研究成果刊载于论文《生命周期评价中土地利用地表反照率引发气候影响的全球特征化分析》（Global characterization of surface albedo-induced climate impacts of land use in life cycle assessment）。使用本数据集时，请引用该论文并注明此Zenodo仓储库。 该数据集的特征化因子以0.5度分辨率的逗号分隔值（.csv）文件形式存储，每个文件对应参考状态与土地占用类型之间的唯一土地转移过程。每个文件包含以下内容： 1. 位置信息：对应网格单元中心的经纬度坐标； 2. 参考土地覆被与土地占用类型之间地表反照率的月均及年均差值（命名格式为"月份+alb-delta"）； 3. 参考土地覆被与土地占用类型之间地表反照率变化引发的月均及年均辐射强迫（radiative forcing），命名格式为"月份+RF"，单位为W/m²（归一化至1平方米占用面积）； 4. 100年和500年时间尺度下的全球变暖潜势（global warming potential, GWP），单位为kg二氧化碳当量（CO₂e）/单位土地占用面积（m²a），分别记为GWP100和GWP500。 文件命名格式为"CF_albedo_XXX-ZZZ_2011-2020.csv"，其中XXX代表土地占用类型（详见表1），ZZZ代表参考状态（详见表2）。数据还被聚合至更大空间尺度，此类文件的文件名包含"aggregated"字样，此时原经纬度位置信息将替换为位置描述文本。 不确定性数值存储于单独的文件中，命名格式为"CF_uncertainty_XXX-ZZZ.csv"，其中XXX和ZZZ的含义同上。此类文件包含以下内容： 1. 位置信息：对应网格单元中心的经纬度坐标； 2. 各月辐射强迫、年均辐射强迫、GWP100及GWP500数值的均值、中位数、标准差、四分位距（50%置信区间）以及95%置信区间。 表1：土地占用类型代码 |土地占用类型|文件命名代码| |----|----| |所有耕地|crops_12| |谷类作物耕地|crops_12-7| |谷类作物耕地|crops_12-8| |所有牧草地|pasture| |草本草原牧草地|pasture_10| |稀树草原牧草地|pasture_9| |开阔灌丛牧草地|pasture_7| |所有林业用地|forestry| |常绿针叶林|forestry_1| |常绿阔叶林|forestry_2| |落叶针叶林|forestry_3| |落叶阔叶林|forestry_4| |混交林|forestry_5| |水库|hydro| |城市/建成区|urban_13| 表2：参考状态代码 |参考状态|文件命名代码| |----|----| |潜在自然植被（Potential Natural Vegetation, PNV）|pnv| |当前土地覆被|clc| |常绿针叶林|lc-1| |常绿阔叶林|lc-2| |落叶针叶林|lc-3| |落叶阔叶林|lc-4| |混交林|lc-5| |所有森林类型|lc-forest| |密闭灌丛|lc-6| |开阔灌丛|lc-7| |木本稀树草原|lc-8| |稀树草原|lc-9| |草原|lc-10| |永久性湿地|lc-11| |裸地|lc-16| |包含所有以"lc"为前缀代码的参考状态文件的压缩包|PNV_types|