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Geographers of Moscow State University have created a new version of the weather and climate application Mosclim

Scientists from the Faculty of Geography and the Research Computing Center of Moscow State University named after M.V. Lomonosov have developed a new version of the Mosclim web application. The program is designed to monitor and analyze weather and climate conditions in the Moscow region. The application will be useful for professionals and ordinary people who are interested in weather and climate issues.

Mosclim 2.0 app is hosted in the public domain For everyone. The functionality of the program is significantly expanded compared to first versionreleased in the spring of 2021. Mosclim 2.0 provides ample opportunities for visualization and analysis of meteorological observation data – air temperature and humidity, pressure, wind speed and cloudiness. The user can display them on the screen in the form of a map and interactive graphs.

The application allows you to display meteorological data for the current day, as well as use archives from 2005 and the results of their statistical analysis (for example, daily and monthly averages). Interactive tools allow you to compare time series for different weather stations and calculate deviations from the regional average background value. The latter option is useful for analyzing the urban heat island effect and other metropolitan meteorological anomalies.

– The weather data displayed in the Mosclim 2.0 web application is automatically updated from open sources. Observational data from more than 40 meteorological stations of the Roshydromet network in the metropolitan area are loaded. Measurements of popular amateur weather stations of the Netatmo network are also used. There are more than 1,500 such meteorological stations in Moscow and its environs, which is many times more than the number of “official” meteorological monitoring stations. The quality of Netatmo data is not controlled by anyone, so it may not be representative. To solve this problem, the Netatmo data quality control and filtering algorithm is implemented in the web application. The data is updated in a mode close to real time — said the project manager, senior researcher at the Research and Development Center of Moscow State University Mikhail Varentsov.

Another distinctive feature of Mosclim 2.0 was the display of indicators of a person’s sense of the weather. This function allows a simple layman to evaluate specific meteorological information in a more accessible concept of the comfort of the external environment.

— Such modern biometeorological indices as UTCI (Universal Thermal Climate Index) and PET (Physiologically Equivalent Temperature) show the complex effect of air temperature and humidity, wind speed and solar radiation. These indices make it possible to identify the conditions of heat or cold stress of various gradations, — noted the developer of the client part of the web service, a leading researcher at the Faculty of Geography of Moscow State University Timofey Samsonov.

In addition to data visualization and analysis tools, the developers of the Mosclim 2.0 application have created an interactive catalog of meteorological events. It includes maxima and minima of temperature and thermal stress, examples of a pronounced “heat island” of Moscow, intense precipitation and cases of its intensification over the territory of the city. The catalog is presented in the form of a card file and supplemented with a popular science description of the phenomena and their causes.

According to the developers, the new application can be useful for scientists involved in urban meteorology and ecology, employees of city services, media representatives, specialists in the field of education and popularization of science, as well as ordinary people interested in weather and climate issues.

The Mosclim 2.0 web application was developed during the implementation of the grant of the Russian Geographical Society No. 03/2021-R “Development of a cartographic and analytical system for monitoring and retrospective analysis of the meteorological regime and thermal comfort of the Moscow metropolis”.

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