NASA TransCom Project

The Atmospheric Tracer Transport Model Intercomparison Project (TransCom) was created to quantify and diagnose the uncertainty in inversion calculations of the global carbon budget that results from errors in simulated atmospheric transport, the choice of measured atmospheric carbon dioxide data used, and the inversion methodology employed. Under the third phase of TransCom (TransCom 3), surface-atmosphere CO2 fluxes were estimated from an intercomparison of 16 different atmospheric tracer transport models and model variants in order to assess the contribution of uncertainties in transport to ...大气示踪物传输模型比对项目（Atmospheric Tracer Transport Model Intercomparison Project，缩写TransCom）旨在量化并诊断全球碳预算反演计算中的不确定性，此类不确定性源自模拟大气传输过程中的误差、实测大气二氧化碳数据的选取差异，以及所采用的反演方法。在TransCom第三阶段（TransCom 3）中，研究人员通过对16种不同大气示踪物传输模型及其变体开展比对，估算了地表-大气间CO₂通量，以评估传输过程不确定性对……的贡献。