| The lack of ocean observations in the Southern Ocean is one of the major obstacles to understanding the physical processes in the Southern Ocean. During the 36th Antarctic Expedition from 2019 to 2020 and the 37th Antarctic Expedition from 2020 to 2021, the Chinese research vessel Xuelong 2 has deployed four sets of DrIBs in the Southern Ocean, In order to verify the quality of the air-sea interface heat flux observations in the Southern Ocean, this paper compares the observation results with the fifth generation of the European Centre for Medium -Range Weather Forecasts Reanalysis vision 5 ( ERA5) , and mainly conducts sea surface temperature ( SST) measurements with the ERA5. Five types of data, including SST, sea surface air temperature (SAT) , wind speed (WS) , relative humidity (RH) , sea level pressure (SLP) and so on, were compared with the ERA5. On this basis, latent heat flux (LHF) and sensible heat flux (SHF) were calculated using the block algorithm and then compared with the flux data of the ERA5 reanalysis data and analyzed for these seven physical parameters. The results show that the four sets of drifting air -sea interface buoys are in good agreement with the
corresponding ERA5 reanalysis data. Although there are uncertainties in the ERA5 reanalysis data, it confirms to some extent that the indigenous drifting air-sea interface buoys are in principle capable of carrying out air-sea interface flux observations in the Southern Ocean, providing an important reference for the further development of the refined scientific observing programme in the future. |
