Most researches on stratosphere and troposphere exchange (STE) are carried out using model simulations.
A new study conducted by Chinese researchers directly revealed the phenomenon through in-situ measured high-precision profiles. The study was published in Advances in Atmospheric Sciences.
"Such height coverage and high-precision in-situ measurement profiles of trace gases are very rare in China," said Prof. LIU Yi from the Institute of Atmospheric Physics (IAP) of the Chinese Academy of Sciences, a co-author of the study. "Also, the profiles are valuable in many areas, such as the retrieval of local surface flux, model validation, and atmospheric transport research."
The method used for measuring these profiles, called aircore, was applied for the first time in China. Specifically, the balloon-borne aircore campaign was conducted at Xilinhot, Inner Mongolia, China, on June 11 and 15, 2018. During the campaign, two experiments were conducted, on June 13 and 14, respectively, in which CO and CO2 profiles from the surface to around 25 km were measured.
Continue reading at Chinese Academy of Sciences
Image via Chinese Academy of Sciences
