Gravity Recovery and Climate Experiment (GRACE) satellite data are widely used in drought studies. In this study, we quantified severity based on land terrestrial water storage (TWS) changes GRACE data. We the deficit (WSD) index (WSDI) to identify events evaluate severity. The WSDI calculated by provides an effective assessment method when assessing extent of over large areas under a lack site...

Abstract. Total water storage change (TWSC) reflects the balance of all fluxes in a hydrological system. The Gravity Recovery and Climate Experiment/Follow-On (GRACE/GRACE-FO) monthly gravity field models, distributed as spherical harmonic (SH) coefficients, are only means observing this state variable. well-known correlated noise these observations requires filtering, which scatters actual mas...

Previous studies have concluded that the increase in vegetation in the arid northwest of China is related to precipitation rather than temperature. However, these studies neglected the effects of climate warming on water availability that arise through changes in the melting characteristics of this snowy and glaciated region. Here, we characterized vegetation changes using the newly improved th...

Abstract The Mediterranean-Black Sea system consists of two semi-enclosed basins connected by the Turkish Straits. In turn, Mediterranean is to Atlantic Ocean through narrow Strait Gibraltar. hydrological cycle driven fresh water exchanges between atmosphere, continents and oceans, salty mass exchange among ocean basins. Monitoring such fluxes, especially its time evolution, essential understan...

Over the last decade, due to the Gravity Recovery And Climate Experiment (GRACE) mission and, more recently, the Gravity and steady state Ocean Circulation Explorer (GOCE) mission, our ability to measure the ocean’s mean dynamic topography (MDT) from space has improved dramatically. Here we use GOCE to measure surface current speeds in the North Atlantic and compare our results with a range of ...

Terrestrial water storage (TWS) plays an important role in the global cycle. Measuring dynamic changes TWS is essential for resources management, weather-related hazard monitoring and agricultural production. The Gravity Recovery Climate Experiment (GRACE) its following mission (GRACE-Follow on) have provided monthly terrestrial anomalies (TWSA) at a quasi-global scale since April 2002. This st...

[1] Groundwater is a primary hydrological reservoir of the Great Lakes Water Basin (GLB), which is an important region to both Canada and US in terms of culture, society and economy. Due to insufficient observations, there is a knowledge gap about groundwater storage variation and its interaction with the Great Lakes. The objective of this study is to examine the detectability of the groundwate...

Knowledge about the gravity eld allows an insight into the structure and dynamics of the earth. It provides the geoid as the most important physical reference surface in geodesy and oceanography. Since 2000, the CHAMP (CHallenging Mini-satellite Payload) mission detects the structure of the global gravity eld, followed by the launch of GRACE (Gravity Recovery And Climate Experiment) in 2002. In...

<p>GRACE (Gravity Recovery and Climate Experiment) is a satellite mission that can monitor mass distributions in the Earth system, which closely related to consequences of climate change. This gravimetric allows obtain monthly variations Earth’s gravity field, be associated with water variations, after removing effects oceanic tides solid Earth, as well non-tidal atmospheric contributions...