Anny Cazenave Livres

This volume presents the most recent results of global mean sea level variations over the satellite altimetry era (starting in the early 1990s) and associated contributions, such as glaciers and ice sheets mass loss, ocean thermal expansion, and land water storage changes. Sea level is one of the best indicators of global climate changes as it integrates the response of several components of the climate system to external forcing factors (including anthropogenic forcing) and internal climate variability. Providing long, accurate records of the sea level at global and regional scales and of the various components causing sea level changes is of crucial importance to improve our understanding of climate processes at work and to validate the climate models used for future projections. The Climate Change Initiative project of the European Space Agency has provided a first attempt to produce consistent and continuous space-based records for several climate parameters observable from space, among them sea level. This book presents current knowledge of the sea level budget over the altimetry era and 20th century. Previously published in Surveys in Geophysics , Volume 38, Issue 1, 2017

This collection of overview articles illustrates how space-based observations and hydrological modeling have significantly enhanced our understanding of the continental water cycle and its response to climate change. It emphasizes two key issues: the integration of space observations for monitoring water storage changes in river basins globally, and the application of space data in hydrological modeling through data assimilation or as external constraints. The text also addresses water resource management and the effects of human activities on land hydrology, such as groundwater depletion, dam construction, crop irrigation, and changes in land use and agricultural practices. Remote sensing has proven invaluable for monitoring the water balance of large river basins over various time scales. Satellite altimetry tracks water level changes in rivers, lakes, and floodplains, while satellite imagery measures surface water volume variations. Microwave sensors provide crucial data on soil moisture, wetlands, and snowpack. The GRACE mission allows for direct measurement of terrestrial water storage variations, and when combined with other space observations, it can effectively assess groundwater storage changes. Upcoming satellite missions, particularly SWOT, are expected to further advance the monitoring of land surface hydrology.