2023
DOI: 10.1175/mwr-d-23-0057.1
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Assimilation of GOES-16 ABI All-Sky Radiance Observations in RRFS Using EnVar: Methodology, System Development, and Impacts for a Severe Convective Event

Abstract: The Advanced Baseline Imager (ABI) aboard the GOES-16 and GOES-17 satellites provides high-resolution observations of cloud structures that could be highly beneficial for convective-scale DA. However, only clear-air radiance observations are typically assimilated at operational centers due to a variety of problems associated with cloudy radiance data. As such, many questions remain about how to best assimilate all-sky radiance data, especially when using hybrid DA systems such as EnVar wherein a nonlinear obse… Show more

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Cited by 4 publications
(14 citation statements)
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“…Following Y. Zhang et al (2018), Zhu et al (2023), andDegelia et al (2023), a 3 K observation error is adopted to enable a direct comparison among experiments with different microphysics schemes. Similar to Johnson et al (2022) and Degelia et al (2023), the GOES-16 ABI level 1 radiance observation data are converted into BTs and thinned from their original 2 km resolution to a 6 km resolution (within the red box in Figure 2).…”
Section: Assimilated Abi Observationsmentioning
confidence: 99%
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“…Following Y. Zhang et al (2018), Zhu et al (2023), andDegelia et al (2023), a 3 K observation error is adopted to enable a direct comparison among experiments with different microphysics schemes. Similar to Johnson et al (2022) and Degelia et al (2023), the GOES-16 ABI level 1 radiance observation data are converted into BTs and thinned from their original 2 km resolution to a 6 km resolution (within the red box in Figure 2).…”
Section: Assimilated Abi Observationsmentioning
confidence: 99%
“…Previous studies have shown that careful consideration of observation and model bias, observation error variance and covariance, and quality control is necessary to effectively assimilate all-sky IR radiances (Chandramouli et al, 2022;Johnson et al, 2022;Otkin et al, 2018). Parallax correction is implemented during quality control to account for viewing angle issues in cloudy observations, following C. Wang and Huang (2014), Jones et al (2020), Johnson et al (2022), andDegelia et al (2023). The optimal bias correction method remains an open question and may vary across different microphysics schemes.…”
Section: Assimilated Abi Observationsmentioning
confidence: 99%
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“…One field of all‐sky radiance assimilation research focuses on IR all‐sky radiances from geostationary satellite imagers. The assimilation of IR all‐sky BTs using an ensemble‐based data assimilation technique, such as ensemble Kalman filter (EnKF) (Houtekamer & Zhang, 2016), has been proven to improve the forecasts of TCs (Feng & Pu, 2022; Hartman et al., 2021, 2023; Honda, Miyoshi, et al., 2018; Minamide & Zhang, 2018; F. Zhang et al., 2016, 2019), torrential rainfall (He et al., 2023; Honda, Kotsuki, et al., 2018; Okamoto et al., 2019; Otkin & Potthast, 2019), mid‐latitude convection (Chandramouli et al., 2022; Degelia et al., 2023; Eure et al., 2023; Jones et al., 2020; Sawada et al., 2019; Y. Zhang et al., 2018; L. Zhu et al., 2023), and tropical convection (Chan & Chen, 2022; Chan et al., 2022; Chan, Zhang, et al., 2020). Y. Zhang et al.…”
Section: Introductionmentioning
confidence: 99%