Quality assessment of Novorossiysk bora simulation by the WRF-ARW model

Abstract

Considered are the cases of Novorossiysk bora in 2012-2013. Given is the description of this event based on the in situ data. Assessed is the possibility of using the mesoscale nonhydrostatic version of the WRF-ARW model for predicting Novorossiysk bora. Detailed estimates of the results of the modeling are carried out using the large volume of the in situ data. Substantiated is the selection of the optimum model configuration for the numerical simulation of Novorossiysk bora.

Modeling of the Novorossiysk bora. Part 2. Energetics of the atmosphere at the Novorossiysk bora

“…The results were obtained when using a hydro thermodynamic analytical nonlinear two-dimensional modeling, described in detail in Part 1 [Kozhevnikov et al, 2020] and [Berzegova and Bedanokov, 2018;Berzegova et al, 2017;Kozhevnikov, 2019]. In the model the atmosphere was represented in the form of three layers, while the 10 km thick lower layer represented the troposphere, the next 8 km thick -the lower stratosphere, the latterthe rest of the atmosphere.…”

“…The flow function fields of ( , ) (trajectories), velocity and temperature disturbances were calculated in −30 < < 40 coordinate space and to heights of 30 km. Perturbations arising during the flow around mountains of four forms obtained in Part 1 [Kozhevnikov et al, 2020] as a result of special processing of the height map of the region under consideration were analyzed. The relief, which characterizes the averaged two-dimensional features of the mountains was the main object.…”

“…The research continues to study the features of atmospheric disturbances in event of Novorossiysk bora on the basis of a nonlinear analytical modeling (Part 1, [Kozhevnikov et al, 2020]). The main attention is directed to the study of wind and temperature disturbances leading to catastrophic consequences.…”

“…In recent years, the phenomenon of mountain flow has been investigated using numerical simulation methods. According to [Bedanokov et al, 2018] in the works [Efimov and Barabanov, 2013;Gavrikov and Ivanov, 2015;Shestakova et al, 2015;Toropov and Shestakova, 2014;Toropov et al, 2013] it is shown that the Novorossiysk bora can be successfully predicted. When using analytical modeling, the solution of the problem can be narrowed down to obtaining specific formulas and, at the same time, to the control of the accuracy of the results obtained.…”

“…In this paper we will use some results of both [Berzegova and Bedanokov, 2018;Berzegova et al, 2017] and [Efimov and Barabanov, 2013;Gavrikov and Ivanov, 2015;Shestakova et al, 2015;Toropov and Shestakova, 2014;Toropov et al, 2013].…”