CARVE: Alaskan Fire Emissions Database (AKFED), 2001-2013

This data set provides estimates of annual carbon emissions (kg carbon per square meter) from boreal fires at 450-m resolution for the state of Alaska between 2001 and 2013. To produce these data, daily burned area for 2001 to 2013 was mapped using imagery from the Moderate Resolution Imaging Spectroradiometer (MODIS) combined with perimeters from the Alaska Large Fire Database. Carbon consumption was calibrated using available field measurements from black spruce forests in Alaska. Above- and below-ground carbon consumption were modeled based on environmental variables including elevation, day of burning within the fire season, pre-fire tree cover and the differenced normalized burn ratio (dNBR). Modeled uncertainties in carbon consumption are included in the data set. The derived burn area and carbon emissions product, referred to as the Alaskan Fire Emissions Database (AKFED), provides a resource for study of the environmental controls on daily fire dynamics, boreal fire emissions in biogeochemical models, and potential feedbacks from changing fire regimes.

本数据集提供了2001年至2013年期间阿拉斯加州范围内，利用MODIS（中分辨率成像光谱仪）图像和来自阿拉斯加大型火灾数据库的边界数据，以450米分辨率对针叶林火灾年度碳排放（每平方米碳千克）的估算。为了生成这些数据，对2001年至2013年的每日燃烧面积进行了测绘。碳消耗量通过阿拉斯加黑云杉森林中可用的现场测量进行校准。地上和地下碳消耗量基于包括海拔、火灾季节内的燃烧日期、火灾前的树木覆盖和差异化的归一化燃烧比（dNBR）等环境变量进行建模。数据集中包含了碳消耗量的模型不确定性。所得到的燃烧面积和碳排放量产品，称为阿拉斯加火灾排放数据库（AKFED），为研究每日火灾动态的环境控制、生物地球化学模型中的针叶林火灾排放以及火灾制度变化的潜在反馈提供了一个资源。