Sustainable groundwater management requires an accurate characterization of aquifer-storage change over time. This process begins with analysis historical water levels at observation wells. However, water-level records can be sparse, particularly in developing areas. To address this problem, we developed imputation method to approximate missing monthly averaged groundwater-level observations in...

This manuscript aims to develop a new multivariate composite index for monitoring agricultural drought. To achieve this, the AVHRR, VIIRS, CHIRPS data series over period of 40 years, rainfall and crop yield as references were used. Variables include parameters vegetative stress (SVCI, PV, SMN), water (PCI, RDI, NRDI), heat (SMT, TCI, STCI), variable related environmental conditions was calculat...

Abstract. Annual and seasonal temperature, precipitation, drought index (SPI – standard precipitation index, SPEI evapotranspiration Z PDSI Palmer Drought Severity Index) series covering the Czech Lands territory (now Republic) over 520 years (1501–2020 CE) reconstructed from documentary data combined with instrumental observations were analysed herein. The temperature exhibits a statistically ...

Appalachian riverscour woodlands are intermittently flooded areas along high-energy rivers characterized by exposed bedrock and poorly developed sandy soils, high plant diversity, scattered stunted trees. These sites can be negatively impacted dam construction alterations to river hydrology, trampling associated with riverside recreation activities, non-native species. In West Virginia, little ...

Abstract. Trees record climatic conditions during their growth, and tree rings serve as proxy to reveal the features of historical climate a region. In this study, we collected tree-ring cores hemlock forest (Tsuga forrestii) from northwestern Yunnan area southeastern Tibetan Plateau (SETP) created residual width (TRW) chronology. An analysis relationship between growth revealed that precipitat...

A multivariate, principal-component based index has been developed to quantify the severity of droughts. Named the Aggregate Drought Index (ADI), it describes the meteorological, hydrological, and agricultural aspects of drought on a climate-divisional basis, using fluctuations in the values of five variables associated with the hydrologic cycle and available water: precipitation, evaporation, ...