Spatial and temporal identification of baric systens in low troposphere and midtroposphere
Journal Title: Український гідрометеорологічний журнал - Year 2017, Vol 19, Issue 19
Abstract
According to the terms of synoptic meteorology baric systems of low troposphere and midtroposphere are the main objects for research of large-scale circulation processes. Therefore, knowledge of their typical places of origin, their movement and characteristics is extremely critical. The purpose of this publication consists in analyzing existing methods and algorithms used for identification and tracking of baric systems in low troposphere and midtroposphere. This will allow for distinguishing the most output data and methods for further usage. Results. A unified methodology for identification and tracking of baric systems was developed. It is based on a step-by-step identification of isolated clusters of low and high pressure or geopotential height throughout the entire depth of low and middle troposphere from a ground level to a 500 hPa isobaric level. Centers of clusters on different levels over a specific period of time are integrated in a single vertical profile which represents a certain baric system. Tracking of baric system movement is conducted using the method of the nearest neighbor which was improved to ensure more accurate detection of fast-moving and short-living cyclones. A software application for automatic identification of baric systems in the Northern Hemisphere and generation of sets of kinematic maps of natural synoptic periods was developed. A database of baric systems which existed in the Northern hemisphere during 1976-2016 was also created.
Authors and Affiliations
E. V. Samchuk
Keywords
Related Articles
- EP ID EP327966
- DOI 10.31481/uhmj.19.2017.05
- Views 89
- Downloads 0
Simulation of regional climate models of total cloud fraction in Morocco for the period of 2020-2050
The Moroccan energy system is highly dependent on external energy markets. The use of solar energy is one of the most promising ways in the development of renewable energy sources. At the moment, there are several scenar...
Comparative assessment of different municipal solid waste treatment methods based on greenhouse gases emission values
The research is aimed at comparing different methods of municipal solid waste treatment (waste burial, composting, complex recycling) depending on the values of generated greenhouse gases. In order to compare waste buria...
Comparative analysis of frequency of dry winds occurrence in Ukraine in the mid-20th century and at the beginning of the 21st century
Dry winds in Ukraine present a dangerous phenomenon which can significantly impact on crop yields. The winds damage agricultural crops active development of which occurs in spring and summer time. Their impact can in a s...
Nature of extreme precipitation over Ukraine in the 21st century
The article examines the state of precipitation over the territory of Ukraine over recent decades. Through the example of central months of the seasons differences in monthly and average daily precipitation amounts for t...
Evaluation of the influence of climate change on the productivity of millet in the central part of Ukraine
Climate change is a change of climatic conditions in the global atmosphere and on the Earth in general (or within its individual zones or territories) caused directly or indirectly due by the human activity on the planet...