He received B.Sc. in Land Surveying Engineering (2000), and then the M.Sc. degree in Geodesy from K.N.Toosi University,Tehran, Iran in 2002, the Ph.D. degree from the Royal Institute of Technology (KTH), Stockholm, Sweden, in 2011. He promoted to Docent in Geodesy (2013). He is working as Professor at University of Gävle and Senior Researcher at KTH.
He is member of editorial board in Journal of Geodetic Science since 2013.
Except his academic activities he was project manager of railway and highway studies in different phases of construction of the projects in Metra Consulting Engineering Co. from 2001-2007 in Tehran-Iran.
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The Earth’s gravity field changes with time due to various geodynamical processes. The motions are secular and periodic. The largest secular changes are caused by mantle convection, mass transportation (e.g. glacier melting and sea level rise) and glacial isostatic adjustment, as well as plate and intraplate motions. Notable periodic variations are due to Earth’s rotation (e.g. the pole tide of period 14 months), seasonal variations caused by variations in atmospheric and hydrologic conditions and tidal variations of various different periods. Today, most successful data for studying the temporal changes of the gravity field is dedicated satellite-gravity mission GRACE. The monthly GRACE data can be used for different applications such as: