[A-OS19] [EJ] Ocean climate modelling: present and future (Introduction of CMIP6/OMIP)

[AOS19-P01] Continental river discharge for additional dataset of JRA55-do to drive a global ocean circulation model

*Tatsuo Suzuki¹, Dai Yamazaki¹, Hiroyuki Tsujino², Yoshiki Komuro¹, Hideyuki Nakano², Shogo Urakawa² (1.Japan Agency for Marine-Earth Science and Technology, 2.Meteorological Research Institute, Japan)

Keywords:River discharge, Ocean modeling, JRA55

A dataset of historical daily river discharge into oceans has been created using Global river routing model CaMa-Flood (Yamazaki et al., 2011) forced by runoff data from the land surface component of JRA-55 (Kobayashi et al. 2015). The major continental rivers are well resolved with 0.25-degree horizontal resolution. The total runoff on each drainage basin have some distinctive bias. Therefore, the input runoff data is modified by 5-year low pass filtered multiplicative factors to fit the long time mean and decadal variations of the major continental rivers and total river discharge into the individual basins to the reference dataset of Dai et al. (2009). The model is calculated from 1958 to 2016. The yearly and seasonal variations of major rivers are reasonably represented. This data production is planned to be update following the JRA-55.