Retrieval of isotopologue ratio from ground-based FTIR measurements

RISOTO-BL将为对流层边界层产生新的水蒸气同位素数据，其中同位素比值对于研究大气与土壤和生物圈之间的交换过程非常有用。RISOTO-BL将把卡尔斯鲁厄建立为边界层水蒸气同位素比率的唯一参考点。同位素将由现场分析仪和地面FTIR(傅立叶变换红外)中红外和近红外遥感系统测量。目标是高数据质量和不同技术之间的最终一致性。将通过与纳入同位素的大气模型进行比较，证明现场数据和遥感数据的科学用途。RISOTO-BL是对欧洲研究理事会MUSICA项目的理想补充，与RISOTO-BL项目不同，该项目侧重于自由对流层，其地基遥感部分没有考虑在目前建立的总碳柱观测网络(TCCON)框架内进行的高质量近红外测量。

RISOTO-BL will produce new water vapour isotopologue data for the tropospheric boundary layer where the isotopologue ratios are very useful for investigating exchange processes between the atmosphere, on the one hand, and the soil and the biosphere, on the other hand. RISOTO-BL will establish Karlsruhe as a unique reference site of boundary layer water vapour isotopologue ratios. The isotopologues will be measured by an in-situ analyzer and by a ground-based FTIR (Fourier Transform Infrared) middle and near infrared remote sensing system. The objective is a high data quality and an ultimate consistency between the different techniques. The scientific usefulness of the in-situ and the remotely-sensed data will be documented by comparison to isotopologue incorporated atmospheric models. RISOTO-BL ideally complements the European Research Council project MUSICA, which – in contrast to RISOTO-BL – focuses on the free troposphere and whose ground-based remote sensing component does not contemplate the high quality near infrared measurements performed in the framework of the currently establishing Total Carbon Column Observing Network (TCCON).