Changes in the timing of migratory events have been observed recently in many migratory species, most likely in response to climatic change. In the common tern Sterna hirundo we examined such changes in spring arrival date and body mass based on an individual-based longitudinal data set from a transponder marked colony from 1994 to 2012. Although no long-term trend was observed in either trait,...

The North Atlantic Oscillation (NAO) is one of the major sources of interannual atmospheric variability over the Northern Hemisphere. In this study, we examined the variability of lake-levels of Lake Bey ehir in timescale (period) domain using continuous wavelet transform (CWT) and global wavelet spectrum (GWS). The long winter (December, January, February and March) lake-level series and NAO i...

Variations of the atmospheric angular momentum "AAM# is responsible for almost all of the observed length!of!day "LOD# variation on time scales from several days to several years\ and much of the observed polar motion on the intra!seasonal time scale[ El Nin1⁄2o:Southern Oscillation "ENSO# and Quasi!Biennial Oscillation "QBO# have been singled out to successfully explain interannual LOD variati...

this study investigates the contributions of atlantic ocean to june-august rainfall over uganda and western kenya (ku). the study has utilized the datasets including precipitation from the global precipitation climatology centre, north atlantic oscillation index (naoi), south atlantic ocean dipole index (saodi), era-interim reanalysis, and the atlantic ocean sea surface temperature (sst). singu...

Endogenous (e.g., age and sex) exogenous climate resource availability) factors influence avian migration phenology. However, little is known regarding the ecology of birds at non-breeding grounds, including American white pelican (Pelecanus erythrorhynchos). We used Global Positioning System transmitters to track movements 51 pelicans from 2002 2012. Kaplan–Meier model estimate spring probabil...

The influence of solar/geomagnetic activity on climate variables still remains a fully unclarified problem, although many scientific efforts have been made to better understand it. In order bring more information this open in the present study, we analyze connection between (predictors) and (predictands) by applying elements from theory wavelet transform analysis. solar was highlighted Wolf num...

Wine grapes are highly sensitive to changes in climate. The aim of the study was evaluate influence selected climatic variables such as air temperature, total precipitation and North Atlantic Oscillation Index on wine quality. This effect monitored individual phenological stages grapevine plant growth; monitoring done separately for each varieties. following varieties were subjected evaluation:...

Abstract. Although the literature still debates how several anthropogenic and natural factors have contributed to recent streamflow decline in Iberian Peninsula, a continuing decrease winter precipitation (WP) has been noticed this area since 1980s associated with large-scale atmospheric drivers. This contribution assesses potential propagation of WP deficit into water resource variability. For...

Abstract Four meteorological components (geopotential height Z , air temperature T dew point Td, and relative humidity RH) collected from ERA-5 ERA-Interim were compared with the observations of nine radiosonde stations different climatic changes, at isobaric levels (850, 700, 500, 200 hPa) during period 2000–2017, in order to assess accuracy aforementioned reanalysis datasets. The results show...