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Number of items: 62.

Forootan, E, Farzaneh, S, Lück, C and Vielberg, K 2019. Estimating and predicting corrections for empirical thermospheric models. Geophysical Journal International 218 (1) , pp. 479-493. 10.1093/gji/ggz163
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Forootan, Ehsan, Khaki, M., Schumacher, M., Wulfmeyer, V., Mehrnegar, N., van Dijk, A.I.J.M., Brocca, L., Farzaneh, S., Akinluyi, F., Ramillien, G., Shum, C.K., Awange, J. and Mostafaie, A. 2019. Understanding the global hydrological droughts of 2003?2016 and their relationships with teleconnections. Science of the Total Environment 650 (2) 10.1016/j.scitotenv.2018.09.231
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Khaki, M., Hoteit, I., Kuhn, M., Forootan, Ehsan and Awange, J. 2019. Assessing data assimilation frameworks for using multi-mission satellite products in a hydrological context. Science of the Total Environment 647 , pp. 1031-1043. 10.1016/j.scitotenv.2018.08.032
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Khaki, M., Ait-El-Fquih, B., Hoteit, I., Forootan, E., Awange, J. and Kuhn, M. 2018. Unsupervised ensemble Kalman filtering with an uncertain constraint for land hydrological data assimilation. Journal of Hydrology 564 , pp. 175-190. 10.1016/j.jhydrol.2018.06.080
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Anyah, R.O., Forootan, E., Awange, J.L. and Khaki, M. 2018. Understanding linkages between global climate indices and terrestrial water storage changes over Africa using GRACE products. Science of the Total Environment 635 , pp. 1405-1416. 10.1016/j.scitotenv.2018.04.159
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Yang, Fan, Forootan, Ehsan, Schumacher, Maike, Shum, C K and Zhong, Min 2018. Evaluating non-tidal atmospheric products by measuring GRACE K-band range rate residuals. Geophysical Journal International 215 (2) , pp. 1132-1147. 10.1093/gji/ggy340
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Awange, J. L., Faisal Anwar, A. H. M., Forootan, Ehsan, Nikraz, H., Khandu, K. and Walker, J. 2018. Enhancing civil engineering surveying learning through workshops. Journal of Surveying Engineering 143 (3) 10.1061/(ASCE)SU.1943-5428.0000211
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Khaki, M., Awange, J., Forootan, E. and Kuhn, M. 2018. Understanding the association between climate variability and the Nile's water level fluctuations and water storage changes during 1992?2016. Science of the Total Environment 645 , pp. 1509-1521. 10.1016/j.scitotenv.2018.07.212
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Khaki, M., Hamilton, F., Forootan, E., Hoteit, I., Awange, J. and Kuhn, M. 2018. Non-parametric data assimilation scheme for land hydrological applications. Water Resources Research 54 (7) , pp. 4946-4964. 10.1029/2018WR022854
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Khaki, M., Forootan, Ehsan, Kuhn, M., Awange, J., Papa, F. and Shum, C.K. 2018. A study of Bangladesh's sub-surface water storages using satellite products and data assimilation scheme. Science of the Total Environment 625 , pp. 963-977. 10.1016/j.scitotenv.2017.12.289
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Mostafaie, A., Forootan, Ehsan, Safari, A. and Schumacher, M. 2018. Comparing multi-objective optimization techniques to calibrate a conceptual hydrological model using in situ runoff and daily GRACE data. Computational Geosciences 22 (3) , pp. 789-814. 10.1007/s10596-018-9726-8
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Vielberg, Kristin, Forootan, Ehsan, Lück, Christina, Löcher, Anno, Kusche, Jürgen and Börger, Klaus 2018. Comparison of accelerometer data calibration methods used in thermospheric neutral density estimation. Annales Geophysicae 36 (3) , pp. 761-779. 10.5194/angeo-36-761-2018
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Forootan, Ehsan, Kusche, Jürgen, Talpe, Matthieu, Shum, C. K. and Schmidt, Michael 2018. Developing a Complex Independent Component Analysis (CICA) technique to extract non-stationary patterns from geophysical time series. Surveys in Geophysics 39 (3) , pp. 435-465. 10.1007/s10712-017-9451-1
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Khaki, M., Forootan, Ehsan, Kuhn, M., Awange, J., van Dijk, A.I.J.M., Schumacher, M. and Sharifi, M.A. 2018. Determining water storage depletion within Iran by assimilating GRACE data into the W3RA hydrological model. Advances in Water Resources 114 , pp. 1-18. 10.1016/j.advwatres.2018.02.008
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Farzaneh, Saeed and Forootan, Ehsan 2018. Reconstructing regional ionospheric electron density: a combined spherical slepian function and empirical orthogonal function approach. Surveys in Geophysics 39 (2) , pp. 289-309. 10.1007/s10712-017-9446-y
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Schumacher, M., Forootan, Ehsan, van Dijk, A.I.J.M., Müller Schmied, H., Crosbie, R.S., Kusche, J. and Döll, P. 2018. Improving drought simulations within the Murray-Darling Basin by combined calibration/assimilation of GRACE data into the WaterGAP Global Hydrology Model. Remote Sensing of Environment 204 , pp. 212-228. 10.1016/j.rse.2017.10.029
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Hu, Kexiang, Awange, Joseph L., Khandu, , Forootan, Ehsan, Goncalves, Rodrigo Mikosz and Fleming, Kevin 2017. Hydrogeological characterisation of groundwater over Brazil using remotely sensed and model products. Science of the Total Environment 599-60 , pp. 372-386. 10.1016/j.scitotenv.2017.04.188
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Khaki, M., Ait-El-Fquih, B., Hoteit, I., Forootan, Ehsan, Awange, J. and Kuhn, M. 2017. A two-update ensemble Kalman filter for land hydrological data assimilation with an uncertain constraint. Journal of Hydrology 555 , pp. 447-462. 10.1016/j.jhydrol.2017.10.032
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Talpe, Matthieu J., Nerem, R. Steven, Forootan, Ehsan, Schmidt, Michael, Lemoine, Frank G., Enderlin, Ellyn M. and Landerer, Felix W. 2017. Ice mass change in Greenland and Antarctica between 1993 and 2013 from satellite gravity measurements. Journal of Geodesy 91 (11) , pp. 1283-1298. 10.1007/s00190-017-1025-y
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Khaki, M., Schumacher, M., Forootan, Ehsan, Kuhn, M., Awange, J.L. and van Dijk, A. I. J. M. 2017. Accounting for spatial correlation errors in the assimilation of GRACE into hydrological models through localization. Advances in Water Resources 108 , pp. 99-112. 10.1016/j.advwatres.2017.07.024
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Yang, Fan, Kusche, Jürgen, Forootan, Ehsan and Rietbroek, Roelof 2017. Passive-ocean radial basis function approach to improve temporal gravity recovery from GRACE observations. Journal of Geophysical Research: Solid Earth 122 (8) , pp. 6875-6892. 10.1002/2016JB013633
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Khaki, M., Hoteit, I., Kuhn, M., Awange, J., Forootan, Ehsan, van Dijk, A.I.J.M., Schumacher, M. and Pattiaratchi, C. 2017. Assessing sequential data assimilation techniques for integrating GRACE data into a hydrological model. Advances in Water Resources 107 , pp. 301-316. 10.1016/j.advwatres.2017.07.001
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Uebbing, B., Forootan, Ehsan, Braakmann-Folgmann, A. and Kusche, J. 2017. Inverting surface soil moisture information from satellite altimetry over arid and semi-arid regions. Remote Sensing of Environment 196 , pp. 205-223. 10.1016/j.rse.2017.05.004
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Forootan, Ehsan, Safari, A., Mostafaei, A., Schumacher, M., Delavar, M. and Awange, J. 2017. Large-scale total water storage and water flux changes over the arid and semiarid parts of the Middle East from GRACE and reanalysis products. Surveys in Geophysics 38 (3) , pp. 591-615. 10.1007/s10712-016-9403-1
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Khandu, ., Awange, Joseph L., Kuhn, M., Anyah, R. and Forootan, Ehsan 2017. Changes and variability of precipitation and temperature in the Ganges-Brahmaputra-Meghna River Basin based on global high-resolution reanalyses. International Journal of Climatology 37 (4) , pp. 2141-2159. 10.1002/joc.4842
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Kusche, Juergen, Eicker, Annette, Forootan, Ehsan, Springer, Anne and Longuevergne, Laurent 2016. Mapping probabilities of extreme continental water storage changes from space gravimetry. Geophysical Research Letters 43 (15) , pp. 8026-8034. 10.1002/2016GL069538
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Awange, Joseph. L., Khandu, ., Schumacher, Maike, Forootan, Ehsan and Heck, Bernhard 2016. Exploring hydro-meteorological drought patterns over the Greater Horn of Africa (1979–2014) using remote sensing and reanalysis products. Advances in Water Resources 94 , pp. 45-59. 10.1016/j.advwatres.2016.04.005
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Dobslaw, Henryk, Bergmann-Wolf, Inga, Forootan, Ehsan, Dahle, Christoph, Mayer-Gürr, Torsten, Kusche, Jürgen and Flechtner, Frank 2016. Modeling of present-day atmosphere and ocean non-tidal de-aliasing errors for future gravity mission simulations. Journal of Geodesy 90 (5) , pp. 423-436. 10.1007/s00190-015-0884-3

Khandu, Khandu, Awange, Joseph. L. and Forootan, Ehsan 2016. Interannual variability of temperature in the UTLS region over Ganges–Brahmaputra–Meghna river basin based on COSMIC GNSS RO data. Atmospheric Measurement Techniques 9 , pp. 1685-1699. 10.5194/amt-9-1685-2016
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Khandu, E., Forootan, Ehsan, Schumacher, Maike, Awange, Joseph L. and Müller Schmied, Hannes 2016. Exploring the influence of precipitation extremes and human water use on total water storage (TWS) changes in the Ganges-Brahmaputra-Meghna River Basin. Water Resources Research 52 (3) , pp. 2240-2258. 10.1002/2015WR018113
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Khandu, Khandu, Awange, J. and Forootan, Ehsan 2016. An evaluation of high-resolution gridded precipitation products over Bhutan (1998-2012). International Journal of Climatology 36 , pp. 1067-1087. 10.1002/joc.4402

Eicker, Annette, Forootan, Ehsan, Springer, Anne, Longuevergne, Laurent and Kusche, Jürgen 2016. Does GRACE see the terrestrial water cycle 'intensifying'? Journal of Geophysical Research: Atmospheres 121 (2) , pp. 733-745. 10.1002/2015JD023808
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Awange, J., Ferreira, V.G., Forootan, Ehsan, Khandu, Khandu, Andam-Akorful, S.A., Agutu, N.O. and He, X.F. 2016. Uncertainties in remotely-sensed precipitation data over Africa. International Journal of Climatology 36 , pp. 303-323. 10.1002/joc.4346
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Forootan, Ehsan, Khandu, ., Awange, J., Schumacher, M., Anyah, R., Dijk, A.I.J.M. van and Kusche, J. 2016. Quantifying the impacts of ENSO and IOD on rain gauge and remotely sensed precipitation products over Australia. Remote Sensing of Environment 172 , pp. 50-66. 10.1016/j.rse.2015.10.027
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Al-Zyoud, S., Ruhaak, W., Forootan, Ehsan and Saas, I. 2015. Over exploitation of groundwater in the centre of Amman Zarqa Basin-Jordan: evaluation of well data and GRACE satellite observations. Resources 4 , pp. 819-830. 10.3390/resources4040819
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Khaki, M., Forootan, Ehsan, Sharifi, M.A., Awange, J. and Kuhn, M. 2015. Improved gravity anomaly fields from retracked multi-mission satellite radar altimetry observations over the Persian Gulf and the Caspian Sea. Geophysical Journal International 202 , pp. 94-106. 10.1093/gji/ggv240

Andam-Akorful, S.A., Ferreira, V.G., Awange, J., Forootan, Ehsan and He, X.F. 2015. Multi-model and multi-sensor estimation of evapotranspiration over the Volta Basin, West Africa. International Journal of Climatology 35 (10) , pp. 3132-3145. 10.1002/joc.4198
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Uebbing, B., Kusche, J. and Forootan, Ehsan 2015. Waveform retracking for improving level estimations from Topex/Poseidon, Jason-1 and -2 altimetry observations over African lakes. IEEE Transactions on Geoscience and Remote Sensing 53 , pp. 2211-2224. 10.1109/TGRS.2014.2357893

Bergmann-Wolf, I., Forootan, Ehsan, Klemann, V., Kusche, J. and Dobslaw, H. 2015. Updating ESA's Earth System Model for Gravity Mission Simulation Studies: 3. A Realistically Perturbed Non-Tidal Atmosphere and Ocean De-Aliasing Model. [Technical Report]. Potsdam: GFZ German Research Centre for Geosciences. Available at: http://gfzpublic.gfz-potsdam.de/pubman/faces/viewI...
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Awange, J., Forootan, Ehsan, Fleming, K. and Odhiambo, G. O. 2015. Dominant patterns of water storage changes in the Nile Basin during 2003-2013. In: Lakshmi, V., Alsdorf, D., Anderson, M., Biancamaria, S., Cosh, M., Entin, J., Huffman, G., Kustas, W., van Oevelen, P., Painter, T., Parajka, J., Rodell, M. and Rüdiger, C. eds. Remote Sensing of the Terrestrial Water Cycle, Geophysical Monograph, vol. 206. Hoboken, NJ: American Geophysical Union and Wiley, pp. 367-382. (10.1002/9781118872086.ch22)

Dobslaw, H., Bergmann-Wolf, I., Dill, R., Forootan, Ehsan, Klemann, V., Kusche, J. and Sasgen, I. 2015. The updated ESA Earth system model for future gravity mission simulation studies. Journal of Geodesy 89 , pp. 505-513. 10.1007/s00190-014-0787-8

Awange, J., Gebremichael, M., Forootan, Ehsan, Wakbulcho, G., Anyah, R., Ferreira, V.G. and Alemayehu, T. 2014. Characterization of Ethiopian mega hydrogeological regimes using GRACE, TRMM and GLDAS Datasets. Advances in Water Resources 74 , pp. 64-78. 10.1016/j.advwatres.2014.07.012

Awange, J., Forootan, Ehsan, Kuhn, M., Kusche, J. and Beck, H. 2014. Water storage changes and climate variability within the Nile Basin between 2002 and 2011. Advances in Water Resources 73 , pp. 1-15. 10.1016/j.advwatres.2014.06.010
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Elsaka, B., Forootan, Ehsan and Alothman, A. 2014. Improving the recovery of monthly regional water storage using one year simulated observations of two pairs of GRACE-type satellite gravimetry constellation. Journal of Applied Geophysics 109 , pp. 195-209. 10.1016/j.jappgeo.2014.07.026
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Khaki, M., Forootan, Ehsan and Sharifi, M.A. 2014. Satellite radar altimetry waveform retracking over the Caspian Sea. International Journal of Remote Sensing 35 (17) , pp. 6329-6356.

Dobslaw, H., Bergmann-Wolf, I., Dill, R., Forootan, Ehsan, Klemann, V., Kusche, J. and Sasgen, I. 2014. Updating ESA's Earth System Model for gravity mission simulation studies: 1. Model description and validation. [Technical Report]. Potsdam: GFZ German Research Centre for Geosciences. Available at: http://gfzpublic.gfz-potsdam.de/pubman/faces/viewI...
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Bergmann-Wolf, I., Dil, R., Forootan, Ehsan, Klemann, V., Kusche, J., Sasgen, I. and Dobslaw, H. 2014. Updating ESA's Earth System Model for gravity mission simulation studies: 2. Comparison with the original model. [Technical Report]. GFZ German Research Centre for Geosciences. Available at: http://gfzpublic.gfz-potsdam.de/pubman/faces/viewI...
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Forootan, Ehsan, Kusche, J., Loth, I., Schuh, W-D., Eicke, A., Awange, J., Longuevergne, L., Diekkrueger, B., Schmidt, M. and Shum, C.K. 2014. Multivariate prediction of total water storage anomalies over West Africa from multi-satellite data. Surveys in Geophysics 35 (4) , pp. 913-940. 10.1007/s10712-014-9292-0
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Forootan, Ehsan, Didova, O., Schumacher, M., Kusche, J. and Elsaka, B. 2014. Comparisons of atmospheric mass variations derived from ECMWF reanalysis and operational fields, over 2003 to 2011. Journal of Geodesy 88 (5) , pp. 503-514. 10.1007/s00190-014-0696-x
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Omondi, P., Awange, J., Forootan, Ehsan, Ogallo, L.A., Barakiza, R., Girmaw, G.B., Fesseha, I., Kululetera, V., Kilembe, Caroline, Mbati, M.M., Kilavi, M., King'uyu, S.M., Omeny, P.A., Njogu, A., Badr, E.M., Musa, T.A., Muchiri, P., Bamanya, D. and Komutunga, E. 2014. Changes in temperature and precipitation extremes over the Greater Horn of Africa region from 1961 to 2010. International Journal of Climatology 34 (4) , pp. 1262-1277. 10.1002/joc.3763
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Forootan, Ehsan, Rietbroek, R., Kusche, J., Sharifi, M.A., Awange, J., Schmidt, M., Omondi, P. and Famiglietti, J. 2014. Separation of large scale water storage patterns over Iran using GRACE, altimetry and hydrological data. Remote Sensing of Environment 140 , pp. 580-595. 10.1016/j.rse.2013.09.025
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Awange, J., Anyah, R., Agola, N., Forootan, Ehsan and Omondi, P. 2013. Potential impacts of climate and environmental change on the stored water of Lake Victoria Basin and economic implications. Water Resources Research 49 (12) , pp. 8160-8173. 10.1002/2013WR014350
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Awange, J., Forootan, Ehsan, Kusche, J., Kiema, J.B.K., Omondi, P., Heck, B., Fleming, K., Ohanya, S.O. and Goncalves, R.M. 2013. Understanding the decline of water storage across the Ramser-Lake Naivasha using satellite-based methods. Advances in Water Resources 60 , pp. 7-23. 10.1016/j.advwatres.2013.07.002
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Forootan, Ehsan, Didova, O., Kusche, J. and Locher, A. 2013. Comparisons of atmospheric data and reduction methods for the analysis of satellite gravimetry observations. Journal of Geophysical Research: Solid Earth 118 (5) , pp. 2382-2396. 10.1002/jgrb.50160
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Omondi, P., Awange, J., Ogallo, L.A., Ininda, J. and Forootan, Ehsan 2013. The influence of low frequency sea surface temperature modes on delineated decadal rainfall zones in Eastern Africa region. Advances in Water Resources 54 , pp. 161-180. 10.1016/j.advwatres.2013.01.001

Sharifi, M. A., Forootan, Ehsan, Nikkhoo, M., Awange, J. and Najaf, M. 2013. A point-wise least squares spectral analysis (LSSA) of the Caspian Sea level fluctuations, using Topex/Poseidon and Jason-1 observations. Advances in Space Research 51 (5) , pp. 858-873. 10.1016/j.asr.2012.10.001
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Omondi, P., Awange, J., Ogallo, L.A., Okoola, R.A. and Forootan, Ehsan 2012. Decadal rainfall variability modes in observed rainfall records over East Africa and their relations to historical sea surface temperature changes. Journal of Hydrology 464-46 , pp. 140-156. 10.1016/j.jhydrol.2012.07.003

Forootan, Ehsan and Kusche, J. 2012. Separation of deterministic signals, using independent component analysis (ICA). Studia Geophysica et Geodaetica 57 (1) , pp. 17-26. 10.1007/s11200-012-0718-1

Forootan, Ehsan, Awange, J., Kusche, J., Heck, B. and Eicker, A. 2012. Independent patterns of water mass anomalies over Australia from satellite data and models. Remote Sensing of Environment 124 , pp. 427-443. 10.1016/j.rse.2012.05.023
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Forootan, Ehsan and Kusche, J. 2011. Separation of global time-variable gravity signals into maximally independent components. Journal of Geodesy 86 (7) , pp. 477-497. 10.1007/s00190-011-0532-5

Kusche, J., Eicker, A. and Forootan, Ehsan 2011. Analysis tools for GRACE and related data sets, theoretical basis. Presented at: Mass Transport and Mass Distribution in the System Earth, Mayschoss, Germany, 12-16 September 2011. Published in: Eicker, A. ed. Lecture Notes from the Summer School of DFG SPP1257 Global Water Cycle: September 12-16, 2011. The International Geoscience Programme (IGCP),
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Dodge, S., Weibel, R. and Forootan, Ehsan 2009. Revealing the physics of movement: comparing the similarity of movement characteristics of different types of moving objects. Journal of Computers, Environment and Urban System 33 , pp. 419-434.
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This list was generated on Sat Sep 21 09:07:17 2019 BST.