Urban Biogenic CO2 fluxes: GPP, Reco and NEE Estimates from SMUrF, 2010-2019

This dataset contains estimates of biogenic CO2 flux components at 0.05 degree resolution from the Solar-Induced Fluorescence (SIF) for Modeling Urban biogenic Fluxes (SMUrF) model. Estimates were produced for the following regions and periods: eastern and western CONUS (2010-2019), western Europe (2010-2014 and 2017-2018), eastern Asia, eastern China, eastern Australia, South America, and Central Africa (2017-2018). Modeled CO2 flux components include gross primary production (GPP), ecosystem respiration (Reco), and net ecosystem exchange (NEE). Four-day means of GPP are estimated from solar-induced fluorescence (SIF) and biome-specific GPP-SIF relationships. Daily estimates of Reco are included. In addition, GPP and Reco were downscaled to hourly estimates and used to generate hourly NEE. Uncertainties for 4-day GPP and daily Reco estimates are provided. The input data streams included 500 m MODIS-based annual land cover classification, 0.05 degree spatiotemporally contiguous SIF, above-ground biomass (AGB) from GlobBiomass, eddy-covariance (EC) flux measurements, and gridded products of air and soil temperatures.

本数据集包含了基于太阳诱导荧光（SIF）的建模城市生物源通量（SMUrF）模型所估算的0.05度分辨率的生物源二氧化碳通量组成部分。估算涵盖了以下地区和时间段：美国本土东部和西部（2010-2019年）、西欧（2010-2014年和2017-2018年）、东亚、中国东部、澳大利亚东部、南美洲和非洲中部（2017-2018年）。模型化的二氧化碳通量组成部分包括总初级生产（GPP）、生态系统呼吸（Reco）和净生态系统交换（NEE）。通过太阳诱导荧光（SIF）以及生物群落特定的GPP-SIF关系，估算出GPP的四日平均值。包含了Reco的日度估算。此外，GPP和Reco被缩放到小时估算，并用于生成小时NEE。同时提供了4日GPP和日Reco估算的不确定性。输入数据流包括基于500米MODIS的年度土地覆盖分类、0.05度空间时间连续的SIF、来自GlobBiomass的地上生物量（AGB）、涡度协方差（EC）通量测量以及空气和土壤温度的网格化产品。