A5055814426- Climate variability and models
- Hydrology and Drought Analysis
- Meteorological Phenomena and Simulations
- Hydrology and Watershed Management Studies
- Arctic and Antarctic ice dynamics
- Climate change and permafrost
- Cryospheric studies and observations
- Geophysics and Gravity Measurements
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- Plant Water Relations and Carbon Dynamics
- Climate Change and Sustainable Development
- Flood Risk Assessment and Management
- Integrated Water Resources Management
- Tree-ring climate responses
- Remote Sensing in Agriculture
- Botany and Plant Ecology Studies
- Forest ecology and management
- Regional Development and Policy
- Oceanographic and Atmospheric Processes
- Peatlands and Wetlands Ecology
- Precipitation Measurement and Analysis
- Wind and Air Flow Studies
- Plant Ecology and Soil Science
- Cyclone Separators and Fluid Dynamics
Vilnius University
2015-2025
Lithuanian Geological Survey
2018
Norsk Hydro (Norway)
2012
Abstract This study analyses long‐term changes in drought indices (Standardised Precipitation Index—SPI, Standardised Precipitation–Evapotranspiration Index—SPEI) at 1 and 3 months scales 182 stations 11 central eastern European countries during 1949–2018. For comparative purposes, the necessary atmospheric evaporative demand (AED) to obtain SPEI was calculated using two methods, Hargreaves‐Samani (SPEIH) Penman‐Monteith (SPEIP). The results show some relevant tendencies indices....
This study analyses changes in Normalized Difference Vegetation Index (NDVI) values the eastern Baltic region. The main aim of work is to evaluate growing season indicators (onset, end time, time maximum greenness and duration) their relationship with meteorological conditions (air temperature precipitation) 1982–2015. NDVI seasonality long-term trends were analysed for different types land use: arable land, pastures, wetlands, mixed coniferous forests. In southwestern part area, lasts...
Abstract The main objectives of the study are to analyse mean precipitation pattern in Baltic countries (Estonia, Latvia, Lithuania) and influence local landscape factors on it, derive a regionalization, i.e. select regions having coherent fluctuations precipitation, relationships between characteristics large‐scale atmospheric circulation. Monthly data from 123 stations 1966 2005 analysed relation 52 variables 13 circulation variables. characterize around meteorological stations: land...
<strong class="journal-contentHeaderColor">Abstract.</strong> Droughts are phenomena that affect large areas. Remote sensing data covering territories can be used to assess the impact and extent of droughts. Drought effect on vegetation was determined using normalized difference index (NDVI) Vegetation Condition Index (VCI) in eastern Baltic Sea region located between 53â60°â¯N 20â30°â¯E. The precipitation deficit arable land broadleaved coniferous forest analysed Standardized...
The analysis of drought dynamics in the Neman river basin allows an assessment extreme regional climate changes. Meteorological and hydrological warm period droughts were analyzed this study. identified using standardized precipitation index, streamflow index. whole was over from 1961 to 2010. Precipitation data Vilnius meteorological station (from 1887) discharge Smalininkai (Neman) 1811) used for evaluation recurrence a long-term period. It found that total area dryness has decreased last...
The climate continentality or oceanity is one of the main characteristics local climatic conditions, which varies with global and regional change. This paper analyzes indexes oceanity, as well their variations in middle high latitudes Northern Hemisphere period 1950–2015. Climatology changes are examined using Conrad’s Continentality Index (CCI) Kerner’s Oceanity (KOI). impact teleconnection patterns on continentality/oceanity conditions was also evaluated. According to CCI, more significant...
Compound wind and precipitation extremes (CPWEs) pose significant threats to infrastructure, economies, the environment, human lives. In this study, recurrence, spatial distribution, intensity, synoptic conditions leading formation of CPWEs were assessed in eastern part Baltic Sea region. Using ERA5 reanalysis data, identified when both daily maximum speed exceeded 98th percentile thresholds on same day at grid cell. Due proximity influence terrain, most frequent windward slopes highlands...
The article examines the dynamics of Lithuanian climate in 18th–20th centuries. Evaluation air temperature, precipitation amount and intensity cyclonic circulation during observation period was made. Seasonal trends different climatological indices were determined. To predict change Lithuania 21st century, outputs Global Climate Model (GCM) experiments from five modelling centres used. results investigation show that current tendencies will remain future: against background temperature rise...
Heavy precipitation events in Lithuania for the period 1961–2008 were analysed. The spatial distribution and dynamics of extremes investigated. Positive tendencies some cases statistically significant trends determined whole Lithuania. Atmospheric circulation processes derived using Hess & Brezowski's classification macrocirculation forms. More than one third heavy (37%) observed when atmospheric was zonal. location central part a cyclone (WZ weather condition subtype) over is most common...
The dynamics in dryness over the Baltic Sea region during observation period of 1960–2009, as well climate prediction for 21st century have been evaluated this research. investigated area has examined using Standardized Precipitation Index (SPI). precipitation amount data provided by Climate Research Unit (CRU) at University East Anglia used study. Projections future changes are based on output regional CCLM model driven A1B and B1 emission scenarios. increase SPI values, i.e. a decline...
CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 75:143-154 (2018) - DOI: https://doi.org/10.3354/cr01514 Recent aridity trends and future projections in Nemunas River basin Edvinas Stonevičius1, E. Rimkus1, J. Kažys1,*, A. Bukantis1, Kriaučiūienė2, V. Akstinas2, D. Jakimavičius2, Povilaitis3, L. Ložys4, Kesminas4, T. Virbickas4, Pliūraitė4 1Institute of Geosciences, Vilnius...
Abstract Snow cover plays an important role in environmental, hydrological and climate systems. To monitor the inter‐annual seasonal variation of snow Lithuania, daily moderate resolution imaging spectroradiometer (MODIS) products MOD10A1 MYD10A1 were employed during period from 2002 to 2018. The main disadvantage MODIS sensor is that it unable determine surface conditions under cloud cover. In this study, a four‐step procedure was implemented remove clouds estimated annual monthly number...
This paper reveals the atmospheric circulation patterns during dry periods in Lithuania. The research covers period from 1961 to 2010. Atmospheric features were analysed using Hess and Brezowski classification of macro-circulation forms, NAO AO indices, a 500 hPa geopotential height field Tibaldi-Molteni blocking index. Different phases (developing, persisting attenuation) evaluated individually. Also, regional differences formation investigated. In general are determined by decrease zonal...
Straipsnyje pateikiami prognostiniai klimato rodiklių (vidutinės oro temperatūros ir kritulių kiekio) pokyčiai Lietuvos teritorijoje XXI a. Pasinaudota 24 modelių išvesties duomenimis. Oro kiekio reikšmės atskirais mėnesiais analizuotos 1861–2100 m. Sudaryti 2016–2035 2081–2100 scenarijai, palyginti su 1986–2005 bazinio laikotarpio vidutinėmis reikšmėmis. Prognostiniai dydžiai pagal skirtingus RCP scenarijus 5 gardelėms (jų dydis – 2,5° × 2,5°), dengiančioms teritoriją. Taip pat tyrime buvo...
The objective of this study was to develop the best methodology for determining agricultural droughts in Lithuania. currently used assessment methods do not always accurately reflect drought conditions country, especially first half growing season. For purpose, relevance Hydrothermal Coefficient (HTC) and five indices widely other countries were reassessed. It found that methodologies applied Lithuania are completely suitable under current conditions. A new identification using...