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Lisa Milani, Mark S. Kulie, Daniele Casella, Pierre E. Kirstetter, Giulia Panegrossi, Veljko Petkovic, Sarah E. Ringerud, Jean-François Rysman, Paolo Sanò, Nai-Yu Wang, Yalei You, and Gail Skofronick-Jackson

waters, coastlines, and sea ice edge. These classes come from a cluster analysis, purely empirical self-grouping of emissivity characteristics ( Prigent et al. 2006 ). The TPW and T2m parameters are obtained from the Global Atmospheric Analysis (GANAL; JMA 2000 ) and the European Centre for Medium-Range Weather Forecasts ( Dee et al. 2011 ) reanalysis datasets for the operational and the climatological GPROF outputs, respectively. For this study, the 1C-R-GMI product (TBs) and the climatological 2A

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Sarah Ringerud, Christa Peters-Lidard, Joe Munchak, and Yalei You

precipitation content, so additional assumptions about the vertical distribution of hydrometeors are required to calculate the surface precipitation rates desired by users of the data ( Smith et al. 1994 ). GPM, with collocated radiometer and dual-frequency (Ku/Ka band, or 14 and 35 GHz) precipitation radar (DPR), along with a constellation of partner radiometers, is an excellent tool for exploring these issues and relationships, with application toward the improvement of global retrievals. The operational

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Giuseppe Mascaro

locations of the rain gauges of the FCDMC network, with colors indicating the corresponding record length. Urbanized areas are also shown. (d) Distribution of the intergauge distance. We use records of the Automated Local Evaluation in Real Time (ALERT) rain gauge network of the Flood Control District of the Maricopa County (FCDMC), installed to monitor in real time regional and localized storms, and support flood and flash-flood forecasting. The gauges have been gradually deployed since the beginning

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Efi Foufoula-Georgiou, Clement Guilloteau, Phu Nguyen, Amir Aghakouchak, Kuo-Lin Hsu, Antonio Busalacchi, F. Joseph Turk, Christa Peters-Lidard, Taikan Oki, Qingyun Duan, Witold Krajewski, Remko Uijlenhoet, Ana Barros, Pierre Kirstetter, William Logan, Terri Hogue, Hoshin Gupta, and Vincenzo Levizzani

the recently developed systems [iRain, RainSphere, and Data Portal]; and 4) A deep dive into the configuration and features of the National Water Model (Instructor: David Gochis, NCAR). This course provided an in-depth description of the operational National Water Model (NWM) configuration of the Weather Research and Forecasting-Hydro modeling system. The core physics components and model architecture were discussed as was the workflow comprising the operational model. Aspects of foundational

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Zhe Li, Daniel B. Wright, Sara Q. Zhang, Dalia B. Kirschbaum, and Samantha H. Hartke

produced by the model’s dynamical equations and parameterizations, which are constrained through the assimilation of satellite radiances ( Benjamin et al. 2019 ). Hence, we refer to this as the “physics-based” approach. A number of datasets, particularly reanalyses such as the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2; Gelaro et al. 2017 ) from NASA and ERA5 ( Hersbach et al. 2018 ) from the European Centre for Medium-Range Weather Forecasts assimilate PMW TBs

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Phu Nguyen, Mohammed Ombadi, Vesta Afzali Gorooh, Eric J. Shearer, Mojtaba Sadeghi, Soroosh Sorooshian, Kuolin Hsu, David Bolvin, and Martin F. Ralph

the daily and subdaily scales are more important from the standpoint of operational watershed hydrology and water resources management for applications such as flood forecasting. Furthermore, since PDIR-Now is an IR-based precipitation dataset, it is intended to be particularly advantageous in providing timely and adequate precipitation estimates when other datasets based on PMW and multisensor fusion are not available. With these considerations in mind, analysis of PDIR-Now at the daily and

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Veljko Petković, Marko Orescanin, Pierre Kirstetter, Christian Kummerow, and Ralph Ferraro

current operational algorithm is allowed to use radar-observed convective fraction information (bright blue) as an additional ancillary parameter (see section 4a ). As expected, a better match to the reference suggests that the information on convective fraction might be a key to mitigating PMW biases seen in Fig. 1 . However, radar observations of precipitation from space are sparse, typically limited to research missions (e.g., TRMM and GPM) and intended to serve as a reference rather than a

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Samantha H. Hartke, Daniel B. Wright, Dalia B. Kirschbaum, Thomas A. Stanley, and Zhe Li

model to generate landslide hazard forecasts. We anticipate that other environmental prediction models such as the Global Flood Monitoring System ( Wu et al. 2012 ) and the Global Land Data Assimilation System (GLDAS; Fang et al. 2009 ) could likely benefit from deeper consideration of SMPP uncertainty and error—both systematic and random. In this study, we found it necessary to modify (albeit modestly) the operational LHASA framework to accommodate IMERG uncertainty estimates, as opposed to

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Shruti A. Upadhyaya, Pierre-Emmanuel Kirstetter, Jonathan J. Gourley, and Robert J. Kuligowski

resolutions are critical for near-real-time applications such as rapid monitoring and forecasting of high-impact societal events like flash floods, debris flows, and shallow landslides. Such resolution can be obtained primarily from satellite sensors on board geostationary Earth orbit (GEO) platforms. NOAA’s Advanced Baseline Imager (ABI) sensor on board the latest generation of Geostationary Operational Environmental Satellites (GOES-R Series) provides 3 times more spectral channels, 4 times the

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Clément Guilloteau and Efi Foufoula-Georgiou

. 1996 , 2001 , 2015 ; Kubota et al. 2007 ; Gopalan et al. 2010 ; Mugnai et al. 2013 ; Ebtehaj et al. 2015 ; Kidd et al. 2016 ; Petković et al. 2018 ). The TRMM ( Kummerow et al. 2000 ) and GPM ( Hou et al. 2014 ; Skofronick-Jackson et al. 2017 ) satellite missions in particular provided the data and the research framework allowing the successful development of research and operational retrieval algorithms. Today, the GPM Microwave Imager (GMI) is integrated in an international constellation

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