The comprehensive assessment of climatic and hydrological droughts in terms of their temporal and spatial evolutions is very important for water resources management and social development in the basin scale. To study the spatial and temporal changes of climatic and hydrological droughts and the relationships between them, the SPEI and SDI are adopted to assess the changes and the correlations ...

The reliability of paleoclimatic inferences from lake-sediment records rests on the understanding of how various sediment indicators respond to environmental changes. Despite the recent proliferation of paleoclimatic records, only a limited number of studies have rigorously evaluated potential indicators by comparing lake-sediment records with instrumental weather data. We analyzed annually lam...

There has been a surge of paleo-climatic/environmental studies of Northwestern China (NW China), a region characterized by a diverse assortment of hydro-climatic systems. Their common approach, however, focuses on "deducing regional resemblance" rather than "exploring regional variance." To date, efforts to produce a quantitative assessment of long-term intra-regional precipitation variability ...

Drought is a naturally occurring event that is associated with virtually all climatic regions. Given its slow onset and other characteristics, including its spatial dimensions and duration, impacts are difficult to assess and have been, historically, poorly documented. These impacts are strongly influenced by a society’s exposure to the hazard and the vulnerability of that society to the hazard...

The record drought of 2012 brought the issue of climatic vulnerability to the agricultural enterprise front and center. The swings in the temperature patterns associated with higher frost and freeze risks, as well as the midseason heat stress and heavy rain/severe weather risks have brought about potentially newer climatic regimens to light. Several associated shifts are apparent in regional gr...

The assessment of relationships between satellite-derived vegetation indices and meteorological drought improves our understanding of how these indices respond to climatic changes. The combination of climate data and the Normalized Difference Vegetation Index (NDVI) product of Moderate Resolution Imaging Spectroradiometer (MODIS) imagery provided an opportunity to evaluate the impact of d...

Drought is a complex, slow-onset phenomenon that affects more people than any other natural hazard and results in serious economic, social, and environmental impacts. Although drought affects virtually all climatic regimes and has significant consequences in both developed and developing countries, its impacts are especially serious in developing countries where dryland agriculture predominates...

Most palaeoecological research has focused on glacial– interglacial oscillations as the major climatic changes in Amazonia during the Quaternary (Haffer, 1969; Colinvaux et al., 2000; Pennington et al., 2000). Nevertheless accumulating data point to the importance of Holocene cycles of drought as a potent force shaping lowland communities. Servant et al. (1981) predicted the presence of a midHo...

Flowering phenology is an important and poorly understood plant trait that may possibly be related to the invasiveness potential of alien species. The present work evaluates whether flowering time of invasive alien species is a key trait to overcome the climatic filters operating in continental Mediterranean ecosystems of Spain (characterised by summer drought and low temperatures in winter). W...

TOPIC 1 : CLIMATE AND ENVIRONMENT ................................ 1 TRENDS AND VARIATION IN MONTHLY RAINFALL AND TEMPERATURE IN SURINAME ....................................................................2 EVALUATION OF THE EFFECTS OF ENSO TELECONNECTION ON CLIMATIC PARAMETERS FLUCTUATIONS IN KHORASAN PROVINCE I.R. OF IRAN..........................................................................