Over the past several decades, there have been many Observing System Simulation Experiment (OSSE) studies dedicated to the importance of GEO hyperspectral IR sounders for weather forecasts, including:
Global NWP impact studies
A global OSE study by Bormann et al. 2019 show the lack of hyperspectral IR sounder measurements in low latitude region:
Wang, P., Z. Li, Jun Li, T. J. Schmit, 2021: Added value of GEO-Hyperspectral infrared radiances for local severe storm forecasts using hybrid OSSE method. Advances in Atmospheric Sciences,DOI: 10.1007/s00376-021-0443-1.
Okamoto, K., H. Owada, T. Fujita, M. Kazumori, M. Otsuka, H. Seko, Y. Ota, N. Uekiyo, H. Ishimoto, M. Hayashi, H. Ishida, A. Ando, M. Takahashi, K. Bessho, and H. Yokota, 2020: Assessment of the potential impact of a hyperspectral infrared sounder on the Himawari follow-on geostationary satellite. SOLA, 16, 162−168, doi:10.2151/sola.2020-028. (link)
Bormann, N., H. Lawrence, and J. Farnan, 2019: Global observing system experiments in the ECMWF assimilation system, ECMWF Technical Memorandum 839. (link)
Casey, Sean, R. Atlas, R. N. Hoffman, L. Cucurull, and A. C. Kren, 2018: Geostationary HyperSpectral Sounder (Geo-HSS) Constellation: A Global OSSE Assessment, 22nd Conference on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface (IOAS-AOLS), 98th American Meteorological Society annual meeting, Austin, Texas, 7-11 January, 2018. (link)
Local severe storms forecast and nowcast
On local severe storms, Li et al. 2018, show that GEO hyperspectral IR sounders may provide value-added impact on the forecast as well as analysis field.
Li, Zhenglong, Jun Li, Pei Wang, Agnes Lim, Jinlong Li, Timothy J. Schmit, Robert Atlas, Sid-Ahmed Boukabara, and Ross N. Hoffman, 2018: Value-added Impact of Geostationary Hyperspectral Infrared Sounders on Local Severe Storm Forecasts—via a Quick Regional OSSE, Advances in Atmospheric Sciences, 35(10): 1217-1230. (link)
Jones, Thomas A.; Koch, Steven, and Li, Zhenglong. Assimilating synthetic hyperspectral sounder temperature and humidity retrievals to improve severe weather forecasts. Atmospheric Research v.186, no.1, 2017, pp9-25. (link)
Wang et al., 2013: An Observing System Simulation Experiment for the Impact of MTG Candidate Infrared Sounding Mission on Regional Forecasts: System Development and Preliminary Results, ISRN Meteorology, http://dx.doi.org/10.1155/2013/971501.(link)
Li, J., Jinlong. Li, J. Otkin, T. J. Schmit, and C. Liu, 2011: Warning information in a preconvection environment from the geostationary advanced infrared sounding system – A simulation study using IHOP case, Journal of Applied Meteorology and Climatology, 50, 776 – 783. (link)
Tropical cyclone forecast improvement
Li, Jun et al., 2016: Value-added Impact from FengYun-4 hyperspectral IR sounder observations on regional NWP, 6th Workshop on the Impact of Various Observing Systems on NWP, Shanghai, China (10-13 May 2016) (link)