Klimatas Vilniuje per 330 metų: istorija ir perspektyvos

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Turizmo indekso pritaikymas ir palyginimas Baltijos šalių pajūrio miestuose

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Proceedings of the 20th SIRWEC conference, Druskininkai, Lithuania (14-16th June 2022)

SIRWEC (The Standing International Road Weather Commission) exists to encourage meteorologists, weather forecasters, highway engineers, road masters and others, who are interested in road weather problems, to exchange ideas to make our roads safer to drive on in all weather conditions. Every two years SIRWEC conference is being organized to gather all of the road weather enthusiasts and encourage them to share new scientific discoveries they have accomplished, new products or technologies they have made or any other topic in road weather field

Klimato sąlygų poveikis paprastosios pušies metiniam prieaugiui Aukštaitijos nacionaliniame parke (Lietuva)

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Temporal variation of extreme precipitation events in Lithuania**The study was supported by the Lithuanian State Science and Studies Foundation and by the BSR Interreg IVB Project ‘Climate Change: Impacts, Costs and Adaptation in the Baltic Sea Region (BaltCICA)’.

AbstractHeavy precipitation events in Lithuania for the period 1961–2008 were analysed. The spatial distribution and dynamics of precipitation extremes were investigated. Positive tendencies and in some cases statistically significant trends were determined for the whole of Lithuania.Atmospheric circulation processes were derived using Hess & Brezowski’s classification of macrocirculation forms. More than one third of heavy precipitation events (37%) were observed when the atmospheric circulation was zonal. The location of the central part of a cyclone (WZ weather condition subtype) over Lithuania is the most common synoptic situation (27%) during heavy precipitation events.Climatic projections according to outputs of the CCLM model are also presented in this research. The analysis shows that the recurrence of heavy precipitation events in the 21st century will increase significantly (by up to 22%) in Lithuania

Climate change information on internet by different Baltic Sea Region languages: risks of disinformation & misinterpretation

The internet space is the most important and affluent source of climate change related information. Hoverer information content are not always satisfying and threat of fake news and disinformation are very realistic. The analysis included top10 search results of four phrases (Climate change, Global warming, Adaptation to climate change and Climate change policy) using Google search engine. The phrases were searched in 11 Baltic Sea Region (BSR) languages and in the Ukrainian and English languages. The results revealed that climate change disinformation and misinterpretation exists on the internet. Mostly it displayed in indirect forms such as old information, existence of junksites, advertisements, unequal share by main actors (government, mass media, etc.). Moreover, on Eastern BSR languages, internet search results of climate change information are less convenient comparing to western BSR languages. The usage of multilanguage approach in Wikipedia pages could be one of the freshest and most reliable sources of information about climate change

Accessibility to and fragmentation of urban green infrastructure: importance for adaptation to climate change

Urban green infrastructure (GI) is one of the key strategies to respond to environmental problems. It helps to support biodiversity, adaptation to climate change and ensure the provision of ecosystem services (ES). Scientific literature suggests that there are thresholds for minimum viable green area patch sizes. Besides the size, accessibility is another important factor for the supply of ES. This work assesses how demand and accessibility can be improved addressing fragmentation of GI in Vilnius, Lithuania. The analysis shows that climate adaptation policy should guide the development of GI addressing simultaneously the demand of ES and fragmentation of the GI, for instance, by reconnecting existing natural areas in this way increasing accessibility and reducing the risk of further habitat fragmentation

Relation between weather and traffic accidents on the main roads of Lithunia

Despite the significant decrease of overall number of road traffic accidents in Lithuania, weather related accidents are still remaining a challenge for road safety. The original methodology was adjusted to evaluate potential impact of adverse weather on traffic accidents frequency. The research focused on the two main roads in Lithuania during 2017 2019 period. The results proved that the frequency of the traffic accidents increase during adverse weather events and not ideal road surface conditions. The recurrence of accidents reached the highest number on icy and snowy roads

The atmospheric circulation patterns during dry periods in Lithuania

This paper reveals the atmospheric circulation patterns during dry periods in Lithuania.~The research covers the period from 1961 to 2010. Atmospheric circulation features were analysed using the Hess and Brezowski classification of macro-circulation forms, NAO and AO indices, a 500 hPa geopotential height field and the Tibaldi-Molteni blocking index. Different phases of the dry period (developing, persisting and attenuation) were evaluated individually. Also, the regional differences of dry period formation were investigated. In general dry periods are determined by a decrease in zonal and an increase in meridional circulation forms as well as the atmospheric blocking process over the Baltic region longitudinal belt 0-20 days prior to the start of the dry period. An especially strong shift from general circulation patterns are observed during the developing phase of a dry period. Drought persistence in the Baltic region is almost always predetermined by strong anticyclonic circulation. Most drought development stages are associated with negative NAO/AO phases