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Joseph P. Zagrodnik, Lynn McMurdie, and Robert Conrick

enhancement to various upstream parameters associated with the passage of different frontal cyclone sectors. To test the role of the seeder–feeder process, they simulated an idealized warm sector with a uniform sounding and parameterized large-scale forcing over the realistic Olympic Mountains terrain. Similar to Richard et al. (1987) , they found that windward precipitation efficiency in both warm frontal and warm sector simulations was greatly improved by including a small amount (up to 0.5 mm h −1

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David J. Purnell and Daniel J. Kirshbaum

Olympics and avoid sharp terrain gradients at the land edges, the terrain surrounding the Olympics is flattened by creating an irregular pentagon encompassing the Olympics, outside of which the terrain height is set to either 2 m (land) or 0 m (ocean). To limit forcing at poorly resolved scales, and to damp terrain gradients at the polygon edges, a five-point horizontal boxcar smoother is applied to the resulting terrain field. The grid origin is located at the aforementioned Olympics center point. Fig

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Aaron R. Naeger, Brian A. Colle, Na Zhou, and Andrew Molthan

/OLYMPEX/DOW/DATA201 . 10.5067/GPMGV/OLYMPEX/DOW/DATA201 Iacono , M. J. , J. S. Delamere , E. J. Mlawer , M. W. Shephard , S. A. Clough , and W. D. Collins , 2008 : Radiative forcing by long-lived greenhouse gases: Calculations with the AER radiative transfer models . J. Geophys. Res. , 113 , D13103 , https://doi.org/10.1029/2008JD009944 . 10.1029/2008JD009944 ICAO , 2010 : Meteorological service for international air navigation. Annex 3 to the Convention on International Civil Aviation, 17

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