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| hidden:projects:corsipp [2026/01/21 09:22] – kathrin | hidden:projects:corsipp [2026/01/21 09:31] (current) – kathrin |
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| ===Characterizing an orographic turbulent layer and the microphysical processes within it cloud radar and in situ snowfall camera observations=== | ===Characterizing an orographic turbulent layer and the microphysical processes within it cloud radar and in situ snowfall camera observations=== |
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| We have submitted another manuscript in which we focus on characterizing an orographic turbulent layer and the microphysical processes therein for the field campaign site in the Colorado Rocky Mountains. We would like to present a small excerpt of this manuscript: In Fig. 2, statistics of the turbulent layer height (TLH) between Sep 2021 and May 2023 (whole duration of the SAIL campaign) are shown. Liquid layer base (LLB) derived from the ARM high-resolution spectral lidar and cloud base height (CBH) were included in the statistics if a turbulent layer was detected. The most interesting feature is the collocation of TLH and CBH, with its peak just below the summit height of Gothic Mountain at just over $700\,\mathrm{m}$ AGL. This suggests that the turbulent layer plays a major role in cloud formation, possibly through enhanced moisture convergence in the lee of Gothic Mountain. The LLB was mostly detected a few hundred meters above TLH; still, the collocation of the turbulent layer and liquid layer base implies that the turbulent layer aids the formation of a supercooled liquid layer. The fact that LLB is slightly above TLH may arise from the fact that we look at a mean TLH and the turbulent layer has a few hundred meters vertical extent. Liquid water drops, due to their low weight, are most likely found at the top of the turbulent layer. | We also focussed on characterizing an orographic turbulent layer and the microphysical processes therein for the field campaign site in the Colorado Rocky Mountains. In Fig. 2, statistics of the turbulent layer height (TLH) between Sep 2021 and May 2023 (whole duration of the SAIL campaign) are shown. Liquid layer base (LLB) derived from the ARM high-resolution spectral lidar and cloud base height (CBH) were included in the statistics if a turbulent layer was detected. The most interesting feature is the collocation of TLH and CBH, with its peak just below the summit height of Gothic Mountain at just over $700\,\mathrm{m}$ AGL. This suggests that the turbulent layer plays a major role in cloud formation, possibly through enhanced moisture convergence in the lee of Gothic Mountain. The LLB was mostly detected a few hundred meters above TLH; still, the collocation of the turbulent layer and liquid layer base implies that the turbulent layer aids the formation of a supercooled liquid layer. The fact that LLB is slightly above TLH may arise from the fact that we look at a mean TLH and the turbulent layer has a few hundred meters vertical extent. Liquid water drops, due to their low weight, are most likely found at the top of the turbulent layer. |
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