Correction to: Daytime Convective Boundary-Layer Evolution on Three Fair-Weather Days in CASES-97 (Boundary-Layer Meteorology, (2023), 187, 3, (527-565), 10.1007/s10546-022-00782-x)

Margaret A. LeMone, Kyoko Ikeda, Wayne M. Angevine

Research output: Contribution to journalComment/debate

Abstract

After the publication of LeMone et al. (2023), in which it was reported that the radar wind profiler data were not available at Whitewater on 29 April, the lead author found the “missing” data, with only the minisodar data not available. Discovery of these data enabled estimates of mean vertical velocity (Formula presented.) ) and mean horizontal winds (Formula presented.) ) and (Formula presented.) )—and hence synoptic forcing of the convective boundary layer (CBL) top (Formula presented.) using the radar wind profilers at the three sounding sites, Whitewater, Beaumont, and Oxford, which lie at the vertices of the nearly equilateral 60-km triangle outlining the lower Walnut River watershed in southeast Kansas. The watershed was the site of the 1997 Cooperative Atmospheric Surface Exchange Study’s April–May 1997 field campaign, CASES-97 (LeMone et al. 2000). Figure 1 shows the synoptic-forcing terms in the equation for (Formula presented.) time tendency, (Formula presented.) where (Formula presented.) represents CBL growth due to entrainment and the last two terms represent horizontal advection, assuming (Formula presented.) is parallel to the plane described by the three sounding sites. Comparison of the profiler (Formula presented.) to that from radiosonde data in Fig. 11 of LeMone et al. (2023) confirms strong subsidence starting around 1700 UTC (1100 LST), with (Formula presented.) decreasing with time between 1630 and 1900 UTC. However, radiosonde winds at Oxford at 1400 UTC were found to be faulty, hence invalidating winds at 1500 UTC, which were based on interpolation using soundings at 1400 and 1530 UTC and thus the 1500 UTC radiosonde results in Fig. 11 of LeMone et al. (2023). (Figure presented.) Based on observations and CONUS404 model output, evolution of CBL top (upper left frame), and synoptic-forcing terms in (1) (remaining frames). The radiosonde terms based on bad data are encircled. UTC time = LST time + 6 h Thus, the profiler-based results support our earlier conclusion that the observed slower CBL growth (in fact shrinkage) in the afternoon is consistent with (Formula presented.) and net synoptic forcing when compared to the model results from CONUS404 (Rasmussen et al. 2022).

Original languageEnglish
Pages (from-to)347-349
Number of pages3
JournalBoundary-Layer Meteorology
Volume188
Issue number2
DOIs
StatePublished - Aug 2023
Externally publishedYes

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