replying to: L. D. Labzovskii et al. Nature Geoscience https://doi.org/10.1038/s41561-024-01545-8 (2024)

Our recent research¹ found high emissions of nitrogen oxides (NO_x = NO + NO₂), mainly in the form of NO, from microbial sources in 135 large lakes on the Tibetan Plateau (TP), away from direct human influences. This discovery was based on emission inversion from the POMINO-TROPOMI tropospheric NO₂ vertical column density (VCD) satellite product², which was derived on top of the satellite slant column density (SCD) data from KNMI³. Labzovskii et al.⁴ proposed that the high NO₂ VCDs over the TP lakes could be alternatively explained as spectral contributions by absorption in lake water (chlorophyll) that were not accounted for in SCD fitting. This hypothesis lacks supporting evidence. In contrast, recent independent in situ measurements inspired by our finding supported the existence of high NO₂ VCDs and NO_x emissions from the TP lakes.

replying to: L. D. Labzovskii et al. Nature Geoscience https://doi.org/10.1038/s41561-024-01545-8 (2024)

我们最近的研究¹发现，远离人类直接影响的青藏高原 (TP) 135 个大型湖泊的微生物源中氮氧化物 (NO _x = NO + NO ₂ ) 排放量很高，主要以 NO 的形式存在。这一发现基于 POMINO-TROPOMI 对流层 NO ₂垂直柱密度 (VCD) 卫星产品²的发射反演，该卫星产品 2 是根据 KNMI ³的卫星斜柱密度 (SCD) 数据得出的。拉布佐夫斯基等人。 ⁴提出TP湖泊上空的高NO ₂ VCD可以被解释为湖水（叶绿素）吸收的光谱贡献，而SCD拟合中没有考虑到这一点。这一假设缺乏支持证据。相比之下，最近受我们的发现启发的独立现场测量支持了青藏高原湖泊中存在高NO ₂ VCD 和NO _x排放。