@Article{gmd-14-337-2021,
AUTHOR = {Wang, C. and An, X. and Hou, Q. and Sun, Z. and Li, Y. and Li, J.},
TITLE = {Development of four-dimensional variational assimilation  system based on the GRAPES--CUACE adjoint model (GRAPES--CUACE-4D-Var V1.0) and its  application in
emission inversion},
JOURNAL = {Geoscientific Model Development},
VOLUME = {14},
YEAR = {2021},
NUMBER = {1},
PAGES = {337--350},
URL = {https://gmd.copernicus.org/articles/14/337/2021/},
DOI = {10.5194/gmd-14-337-2021}
}