158th meeting of the seminar

«Mathematical modeling of geophysical processes: direct and inverse problems»

The seminar is devoted to the consideration of various aspects of mathematical modeling of physical processes in the atmosphere, hydrosphere and active layer of land, associated with solving problems arising in the study of the problems of climate change and the natural environment.

Seminar Organizing Committee

Leaders:		A.V. Glazunov Doctor of Physics and Mathematics Marchuk Institute of Numerical Mathematics of RAS
		I.A. Repina Doctor of Physics and Mathematics Obukhov Institute of Atmospheric Physics of RAS
		V.M. Stepanenko Doctor of Physics and Mathematics RCC MSU, Geographical Faculty of Moscow State University
Secretary:		A.V. Debolsky Obukhov Institute of Atmospheric Physics of RAS

PROGRAM

Windblows in the forest zone of Russia caused by squalls and tornadoes: methods of identification, patterns of spatial and temporal distribution and conditions of occurrence.

Wind impact is one of the significant factors of forest cover disturbance, along with logging, fires, outbreaks of forest pests, etc. Until recently, estimates of the area, frequency of occurrence, and spatial distribution of windblows in the forest zone of Russia were of a generalized nature. But with the advent of open access satellite images of Landsat and Sentinel-2, data on windblows obtained on the basis of these images have become the most important source of information on cases of squalls and tornadoes not recorded by the observation network. The report will present a methodology for collecting and systematizing data on windblows from satellite images, as well as databases created on its basis on windblows in the forest zone of the European part of Russia for 1986-2020. and in the forest zone of Russia as a whole (from 2001 to the present). In total, they include information on more than 1400 windblows and the meteorological phenomena that caused them (squalls, tornadoes and non-convective events). On the basis of the data obtained, some interesting regularities in the conditions for the occurrence of squalls and tornadoes have been established. In particular, significant differences were confirmed in the conditions for the occurrence of squalls and tornadoes, which manifest themselves on the synoptic scale, in the properties of air masses, as well as in the features of mesoscale processes. Some results of numerical experiments with the WRF regional atmospheric model on the reproduction of strong squalls and tornadoes that caused large windblows in the forest zone of Russia will also be presented.

 The meeting of the seminar will be held in the form of a webinar on the Zoom platform.

Link to the conference:

Topic: семинар "Математическое моделирование геофизических процессов: прямые и обратные задачи".

Time: November 17, 2022 05:15 PM Moscow (GMT+3)

Join Zoom Meeting: https://us02web.zoom.us/j/84395075514?pwd=Y2VET0c0NXZyNWUrZ1lLSGR4ai9wdz09

Meeting ID: 843 9507 5514

Passcode: 803005

To simplify our work during the seminar, please do the following: check in advance that Zoom works for you (in the Zoom application settings you can check the quality of the speakers and microphone) and enter your last name, first name in your profile settings and middle name in full (this can be done on your profile page (https://us02web.zoom.us/profile) - in this case, conference colleagues will see how to contact you.

For communication on all issues related to the work of the seminar, please contact the academic secretary Andrey Vladimirovich Debolsky at and.debol@srcc.msu.ru