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- W4363673555 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> 3-D fields of temperature (<em>T</em>) and specific humidity (<em>q</em>) retrieved by instruments such as the Atmospheric Infrared Sounder (AIRS) are predictive of convection, but convection often triggers during the multi-hour gaps between satellite overpasses. Here we fill the hours after AIRS overpasses by treating AIRS retrievals as air parcels which are moved adiabatically along Numerical Weather Prediction (NWP) wind trajectories. The approach is tested in a simulation experiment that samples 3-D European Reanalysis-5 (ERA5) <em>T</em> and <em>q</em> following the real-world AIRS time-space sampling from March–November 2019 over much of the Continental U.S. Our time-resolved product is named ERA5-FCST, in correspondence to the AIRS forecast product we are using it to test, named AIRS-FCST. ERA5-FCST errors may arise since processes such as radiative heating and NWP sub-grid convection are ignored. For bulk atmospheric layers, ERA5-FCST captures 59–94 % of local hourly variation in <em>T</em> and <em>q</em>. We then consider the relationship between convective available potential energy (CAPE), convective inhibition (CIN), and ERA5 precipitation. The 1° latitude-longitude ERA5-FCST grid cells in our highest CAPE and lowest CIN bin are more than 50 times as likely to develop heavy precipitation (> 4 mm hr<sup>−1</sup>), compared with the baseline probability from randomly selecting a location. This is a substantial improvement compared with using the original CAPE and CIN values at overpass time. The results support development of similar FCST products for operational atmospheric sounders to provide time-resolved thermodynamics in rapidly changing pre-convective atmospheres." @default.
- W4363673555 created "2023-04-11" @default.
- W4363673555 creator A5065555226 @default.
- W4363673555 date "2023-04-11" @default.
- W4363673555 modified "2023-10-18" @default.
- W4363673555 title "Reply on RC1" @default.
- W4363673555 doi "https://doi.org/10.5194/egusphere-2023-97-ac1" @default.
- W4363673555 hasPublicationYear "2023" @default.
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