Data Specifications and Citation

The JAWARA dataset was produced by the joint project of The University of Tokyo, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), and National Institute of Polar Research (NIPR), under the support of the Core Research for Evolutional Science and Technology (CREST; Grant Number JPMJCR1663, FY2016-2021), funded by the Japan Science and Technology Agency (JST), and KAKENHI (Grant Number JP22H00169, FY2022-2026), funded by the Japan Society for the Promotion of Science (JSPS). The dataset was produced using the Earth Simulator and Data Analyzer (DA) system at the JAMSTEC.

Data list

Variables	Coordinates	Temporal resolution
Temperature, three-dimensional wind, geopotential height, temperature tendency from diabatic heating, and zonal and meridioinal forcings from gravity wave parameterization (orographic & non-orographic)	Longitude, latitude, pressure, and time	1 hourly (snapshot)
Temperature, zonal and meridional wind (analysis & increment), vertical wind and geopotential height (forecast)	Longitude, latitude, pressure, and time	6 hourly (snapshot)

Citation

When the JAWARA dataset is utilized in scientific and technical papers, publications, press releases, or other communications, the following two sources must be cited:

Sato, K., & Koshin, D. (2025). JAGUAR Data Assimilation System Whole neutral Atmosphere Reanalysis (JAWARA) [Data set]. National Institute of Polar Research.
https://doi.org/10.17592/002.2025010407
Koshin, D., Sato, K., Watanabe, S. et al. (2025). The JAGUAR-DAS whole neutral atmosphere reanalysis: JAWARA. Prog. Earth Planet Sci., 12, 1.
https://doi.org/10.1186/s40645-024-00674-3

We would also appreciate it if you could cite the following paper describing the ICSOM initiative that created the JAWARA dataset.

Other related references

Sato, K., Y. Tomikawa, M. Kohma, R. Yasui, D. Koshin, H. Okui, et al. (2023). Interhemispheric Coupling Study by Observations and Modelling (ICSOM): Concept, Campaigns, and Initial Results. J. Geophys. Res. Atmos., 128, e2022JD038249.
https://doi.org/10.1029/2022JD038249
Koshin, D., Sato, K., Kohma, M., & Watanabe, S. (2022), An update on the 4D-LETKF data assimilation system for the whole neutral atmosphere, Geoscientific Model Development, 15(5), 2293-2307, doi:10.5194/gmd-15-2293-2022.
McCormack, J. P., V. L. Harvey, N. Pedatella, D. Koshin, K. Sato, L. Coy, S. Watanabe, C. E. Randall, F. Sassi, and L. Holt (2021), Intercomparison of Middle Atmospheric Meteorological Analyses for the Northern Hemisphere Winter 2009–2010, Atmos. Chem. Phys., 21, 17577–17605, https://doi.org/10.5194/acp-21-17577-2021.
Koshin, D., Sato, K., Miyazaki, K., & Watanabe, S. (2020), An ensemble Kalman filter data assimilation system for the whole neutral atmosphere, Geoscientific Model Development, 13(7), 3145–3177, doi:10.5194/gmd-13-3145-2020.