Drought is a complex natural hazard which can have negative effects on agriculture, economy, and human life. In this paper, the primary goal is to explore the application of the Gravity Recovery and Climate Experiment (GRACE) gravity satellite data for the quantitative investigation of the recent drought dynamic over the arid land of northwestern China, a region with scarce hydrological and met...

Satellite based vegetation indices are increasingly used to characterize vegetation's response climate variability and change over large spatial extents. The use of a given index assumes that the adequately describes hydroclimatic forcing. objective this study is compare temporal behaviors normalized difference (NDVI) leaf area (LAI) their associations with variables. Observations monthly preci...

Climate change is already affecting life on Earth and mitigation measures must be taken, which require proper identification of the regions most vulnerable to these changes. This study assesses impact climate water availability (water surplus, deficit precipitation minus evapotranspiration) classification across Caatinga biome, located within Brazilian semiarid region. To obtain surplus deficit...

Wildfire predictions provide useful information for fire management planning and implementation. Temperature precipitation have been used as the primary meteorological predictors wildfires in China. This study is to improve prediction skills of long-range (monthly, seasonal, annual) China by identifying other important predictors. Provincial data during 1999–2020 were calculate correlations bet...

In the context of climate change, extreme precipitation in semi-arid region happens frequently. How well models simulate remains unclear. Based on a WRF v4.3 simulation rainstorm event that occurred Qingyang, China 21 July 2019, applying Kain–Fritsch (KF), Grell–Devenyi (GD) and Bullock–Wang (BW) schemes, impacts different cumulus parameterizations simulations were analyzed, possible causes bia...

In Ardabil region potato crop needs several irrigation, however ground water supplies arebeing exhausted due to reduced precipitation and intensive irrigation. In this research droughttolerance of 10 commercial potato cultivars was studied at three irrigation treatments (100%,80% and 60% of required irrigation water) in Ardabil in a two years field study, 2013-2014.At harvest, marketable tuber ...

This paper seeks to emphasize the flow variability in the Calnistea catchment by analyzing the local physiographic factors. The research has shown that the amount of precipitation that falls to the ground is low, the rocks in the region are soft, but highly permeable, gradients are gentle in most of the territory and vegetal cover is sparse and therefore cannot hold important amounts of water. ...

Rainfall and evapotranspiration are the two most popular climatic factors which have crucial function on agricultural production. Rainfall can be directly measured easily in an area but evapotranspiration is estimated from weather data. In this study reference evapotranspiration ETo was estimated using Penman–Monteith equation. Monthly rainfall and evapotarnspiration were plotted and compared i...

Many ecological restoration projects have been carried out in Southwest China; however, changes vegetation cover the dry valleys of China rarely reported. With their unique characteristics high temperatures and low humidity, these considerably lower than neighboring areas, making them main sediment sources rivers China. Thus, it is imperative to understand China’s valleys, as well effects preci...