Traditionally, models used in hydrological studies have frequently assumed stationarity. Moreover, human-induced water resources management activities are often included as external forcings in water cycle dynamics. However, considering humans' current impact on the water cycle in terms of a growing population, river basins increasingly being managed and a climate considerably changing, it has ...

introduction identification and analysis of time-series behavior of the climatic elements and processes upon them are the basic factors of climatology science and has an important role in management and environmental planning. in general, the behavior of climatic elements are observed in 3 form: trend, oscillation and fluctuation. these behaviors will help us to identify more the climate change...

To investigate the physiological responses of sunflower (Helianthus annuus L., Alstar hybrid) to water stress under different levels of zinc fertilizer, an experiment was conducted at the Isfahan Agricultural Research Center, Isfahan, Iran, during 2008 and 2009 using a randomized complete block design within a split plot layout with three replications. Five irrigation treatments used in thi...

Introduction: The North Pole Residual Ice Cap (NPRC) is probably the most important source of atmospheric water vapor on Mars. Shortly after summer solstice the NPRC is fully exposed to the atmosphere; and, during the seasonal period between L s ~105 o and L s ~120 o , the largest global and annual water column abundances are seen in the polar atmosphere. This is also the season during which th...