Zofia Rzepecka
University of Warmia and Mazury in Olsztyn, Poland
Title: Comparison of changes in groundwater level obtained on the basis of direct measurements in wells with results obtained from GRACE measurements and NOAH model in Poland
Biography
Biography: Zofia Rzepecka
Abstract
In the era of global climate change, monitoring of water resources, including groundwater, is of fundamental importance for nature, agriculture, economy and society. The purpose of this presentation is to check compliance of changes in groundwater level obtained from direct measurements in wells with groundwater storage (GWS) anomalies calculated using GRACE observations in Poland. Data from the Global Land Data Assimilation (GLDAS, in the form of soil moisture (SM) and snow water equivalence (SWE), were used to convert GRACE observations into series of GWS changes. It turned out that very high consistency occurs between GRACE observations and changes in water level in wells, while the GWS series obtained from GRACE and GLDAS do not provide adequate compatibility. Further research presented in the presentation was devoted to attempts to explain this phenomenon. In addition, time series of GRACE, GLDAS and GWS observations were analysed for changes occurring in them.