{ "types" : { "Bookmark" : { "pluralLabel" : "Bookmarks" }, "Publication" : { "pluralLabel" : "Publications" }, "GoldStandardPublication" : { "pluralLabel" : "GoldStandardPublications" }, "GoldStandardBookmark" : { "pluralLabel" : "GoldStandardBookmarks" }, "Tag" : { "pluralLabel" : "Tags" }, "User" : { "pluralLabel" : "Users" }, "Group" : { "pluralLabel" : "Groups" }, "Sphere" : { "pluralLabel" : "Spheres" } }, "properties" : { "count" : { "valueType" : "number" }, "date" : { "valueType" : "date" }, "changeDate" : { "valueType" : "date" }, "url" : { "valueType" : "url" }, "id" : { "valueType" : "url" }, "tags" : { "valueType" : "item" }, "user" : { "valueType" : "item" } }, "items" : [ { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2cbf193e450f98938e866d5b757a5ccf0/tourian", "tags" : [ "Climate","Experiment,Large-scale","Gravity","Recovery","and","basin,Signal","climate","decomposition","geoinst","signals,Markazi" ], "intraHash" : "cbf193e450f98938e866d5b757a5ccf0", "interHash" : "b2d26817a6dbb0209cef9826ce17162d", "label" : "Introducing modified total storage deficit index (MTSDI) for drought monitoring using GRACE observations", "user" : "tourian", "description" : "", "date" : "2019-08-13 14:35:05", "changeDate" : "2025-11-30 22:22:14", "count" : 4, "pub-type": "article", "journal": "Ecological Indicators","publisher":"Elsevier B.V.", "year": "2019", "url": "", "author": [ "Seyed Mohammad Hosseini-Moghari","Shahab Araghinejad","Kumars Ebrahimi","Mohammad J. Tourian" ], "authors": [ {"first" : "Seyed Mohammad", "last" : "Hosseini-Moghari"}, {"first" : "Shahab", "last" : "Araghinejad"}, {"first" : "Kumars", "last" : "Ebrahimi"}, {"first" : "Mohammad J.", "last" : "Tourian"} ], "volume": "101","pages": "465--475","abstract": "Although total storage deficit index (TSDI) is a well-known GRACE-based drought index, it is not efficient for the basins with high consumption because water harvesting in these areas affect GRACE signal. To overcome this limitation, the modified total storage deficit index (MTSDI) is introduced in this paper. To develop MTSDI, residuals of the signal were used instead of total signal. The proposed approach was applied to monitor drought in the Markazi Basin, Iran, during 2002\u20132016. Based on the obtained results, TSDI detected a moderate drought event in 2012 and a long-term severe drought from 2013 to 2016, which is not compatible with the recorded results of standardized precipitation index (SPI), Standardized Precipitation Evapotranspiration Index (SPEI). Meanwhile MTSDI identified two drought events in 2008\u201309 and 2010\u201311 that coincided with droughts detected using SPI and SPEI. Results revealed that MTSDI is highly correlated with SPI and SPEI at a 12 month-scale, showing a correlation coefficient of 0.75 and 0.62, respectively. On the other hand, the coefficient of correlation between TSDI and SPI12 was 0.42 and between TSDI and SPEI12 was 0.26. A pixel-by-pixel analysis showed MTSDI and SPI/SPEI had a significant correlation in most areas of the basin. Further, the investigation of droughts in Markazi Basin revealed that dry years coincide with the occurrence of strong La Niña events. Overall, the results indicated a good potential of GRACE observations for developing a drought monitoring system, which its performance can be enhanced with respect to large-scale climate signals.", "file" : ":C$\\backslash$:/Users/tourian/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Hosseini-Moghari et al. - 2019 - Introducing modified total storage deficit index (MTSDI) for drought monitoring using GRACE observation.pdf:pdf", "issn" : "1470160X", "doi" : "10.1016/j.ecolind.2019.01.002", "bibtexKey": "Hosseini-Moghari2019" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2cbf193e450f98938e866d5b757a5ccf0/geoinst", "tags" : [ "Climate","and","signals,Markazi","climate","decomposition","Gravity","Recovery","basin,Signal","from:tourian","Experiment,Large-scale","geoinst" ], "intraHash" : "cbf193e450f98938e866d5b757a5ccf0", "interHash" : "b2d26817a6dbb0209cef9826ce17162d", "label" : "Introducing modified total storage deficit index (MTSDI) for drought monitoring using GRACE observations", "user" : "geoinst", "description" : "", "date" : "2019-08-13 14:35:05", "changeDate" : "2025-11-30 22:22:17", "count" : 4, "pub-type": "article", "journal": "Ecological Indicators","publisher":"Elsevier B.V.", "year": "2019", "url": "", "author": [ "Seyed Mohammad Hosseini-Moghari","Shahab Araghinejad","Kumars Ebrahimi","Mohammad J. Tourian" ], "authors": [ {"first" : "Seyed Mohammad", "last" : "Hosseini-Moghari"}, {"first" : "Shahab", "last" : "Araghinejad"}, {"first" : "Kumars", "last" : "Ebrahimi"}, {"first" : "Mohammad J.", "last" : "Tourian"} ], "volume": "101","pages": "465--475","abstract": "Although total storage deficit index (TSDI) is a well-known GRACE-based drought index, it is not efficient for the basins with high consumption because water harvesting in these areas affect GRACE signal. To overcome this limitation, the modified total storage deficit index (MTSDI) is introduced in this paper. To develop MTSDI, residuals of the signal were used instead of total signal. The proposed approach was applied to monitor drought in the Markazi Basin, Iran, during 2002\u20132016. Based on the obtained results, TSDI detected a moderate drought event in 2012 and a long-term severe drought from 2013 to 2016, which is not compatible with the recorded results of standardized precipitation index (SPI), Standardized Precipitation Evapotranspiration Index (SPEI). Meanwhile MTSDI identified two drought events in 2008\u201309 and 2010\u201311 that coincided with droughts detected using SPI and SPEI. Results revealed that MTSDI is highly correlated with SPI and SPEI at a 12 month-scale, showing a correlation coefficient of 0.75 and 0.62, respectively. On the other hand, the coefficient of correlation between TSDI and SPI12 was 0.42 and between TSDI and SPEI12 was 0.26. A pixel-by-pixel analysis showed MTSDI and SPI/SPEI had a significant correlation in most areas of the basin. Further, the investigation of droughts in Markazi Basin revealed that dry years coincide with the occurrence of strong La Niña events. Overall, the results indicated a good potential of GRACE observations for developing a drought monitoring system, which its performance can be enhanced with respect to large-scale climate signals.", "file" : ":C$\\backslash$:/Users/tourian/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Hosseini-Moghari et al. - 2019 - Introducing modified total storage deficit index (MTSDI) for drought monitoring using GRACE observation.pdf:pdf", "issn" : "1470160X", "doi" : "10.1016/j.ecolind.2019.01.002", "bibtexKey": "Hosseini-Moghari2019" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b8209142120cda91a5ef5a3e94846699/tourian", "tags" : [ "De-aliasing,Future","geoinst","gravity","mission,Ocean","tides,Satellite" ], "intraHash" : "b8209142120cda91a5ef5a3e94846699", "interHash" : "304515e4d3007d2dcf93d5756e093659", "label" : "A posteriori de-aliasing of ocean tide error in future double-pair satellite gravity missions", "user" : "tourian", "description" : "", "date" : "2019-08-13 14:07:42", "changeDate" : "2025-11-30 22:22:14", "count" : 2, "pub-type": "inproceedings", "booktitle": "International Association of Geodesy Symposia", "year": "2018", "url": "", "author": [ "W. Liu","N. Sneeuw","S. Iran Pour","M.J. Tourian","T. Reubelt" ], "authors": [ {"first" : "W.", "last" : "Liu"}, {"first" : "N.", "last" : "Sneeuw"}, {"first" : "S.", "last" : "Iran Pour"}, {"first" : "M.J.", "last" : "Tourian"}, {"first" : "T.", "last" : "Reubelt"} ], "volume": "147","abstract": "© Springer International Publishing Switzerland 2016. Ocean tides cause notable aliasing errors in the gravity field from single pair space-borne gravimetry missions like GRACE. Several studies into future gravity missions have shown that constellations with two or more GRACE-like tandems lead to a significant reduction of aliasing error from all kinds of high-frequency signal sources. Despite such reduction, tidal aliasing will remain an error source. We here investigate the efficiency of tidal error de-aliasing in the post-processing mode for such future double-pair missions. To that purpose, we analyze how a certain satellite mission samples each tidal constituent. Given the repeat orbit patterns and the observation time span, we examine and model the alias periods and amplitudes constituent by constituent based on data-driven analysis. Results show that a double-pair formation has indeed better de-aliasing properties than a single-pair formation in terms of distribution and amplitude of ocean tide aliasing error. After least-squares (LS) spectral estimation of the tidal aliases at the derived alias periods, the aliasing error is reduced significantly.", "issn" : "09399585", "isbn" : "9783319691695", "doi" : "10.1007/1345_2016_259", "bibtexKey": "Liu2018" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b8209142120cda91a5ef5a3e94846699/geoinst", "tags" : [ "mission,Ocean","De-aliasing,Future","gravity","tides,Satellite","from:tourian","geoinst" ], "intraHash" : "b8209142120cda91a5ef5a3e94846699", "interHash" : "304515e4d3007d2dcf93d5756e093659", "label" : "A posteriori de-aliasing of ocean tide error in future double-pair satellite gravity missions", "user" : "geoinst", "description" : "", "date" : "2019-08-13 14:07:42", "changeDate" : "2025-11-30 22:22:16", "count" : 2, "pub-type": "inproceedings", "booktitle": "International Association of Geodesy Symposia", "year": "2018", "url": "", "author": [ "W. Liu","N. Sneeuw","S. Iran Pour","M.J. Tourian","T. Reubelt" ], "authors": [ {"first" : "W.", "last" : "Liu"}, {"first" : "N.", "last" : "Sneeuw"}, {"first" : "S.", "last" : "Iran Pour"}, {"first" : "M.J.", "last" : "Tourian"}, {"first" : "T.", "last" : "Reubelt"} ], "volume": "147","abstract": "© Springer International Publishing Switzerland 2016. Ocean tides cause notable aliasing errors in the gravity field from single pair space-borne gravimetry missions like GRACE. Several studies into future gravity missions have shown that constellations with two or more GRACE-like tandems lead to a significant reduction of aliasing error from all kinds of high-frequency signal sources. Despite such reduction, tidal aliasing will remain an error source. We here investigate the efficiency of tidal error de-aliasing in the post-processing mode for such future double-pair missions. To that purpose, we analyze how a certain satellite mission samples each tidal constituent. Given the repeat orbit patterns and the observation time span, we examine and model the alias periods and amplitudes constituent by constituent based on data-driven analysis. Results show that a double-pair formation has indeed better de-aliasing properties than a single-pair formation in terms of distribution and amplitude of ocean tide aliasing error. After least-squares (LS) spectral estimation of the tidal aliases at the derived alias periods, the aliasing error is reduced significantly.", "issn" : "09399585", "isbn" : "9783319691695", "doi" : "10.1007/1345_2016_259", "bibtexKey": "Liu2018" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2c8514045542b75bf235e4b95dc4e664d/mathematik", "tags" : [ "Compressible","Density","Discontinuous","Euler;","Finite","Galerkin;","Inertia","Navier???Stokes;","current;","differences;","flow;","from:mhartmann","gravity","ians","vorlaeufig" ], "intraHash" : "c8514045542b75bf235e4b95dc4e664d", "interHash" : "6904f2bea4a01c1e6a3c31769a8fccbf", "label" : "Comparison of dynamical cores for NWP models: comparison of COSMO\n\tand Dune", "user" : "mathematik", "description" : "", "date" : "2018-07-20 10:55:03", "changeDate" : "2019-12-18 14:37:55", "count" : 2, "pub-type": "article", "journal": "Theoretical and Computational Fluid Dynamics","publisher":"Springer-Verlag", "year": "2012", "url": "http://dx.doi.org/10.1007/s00162-012-0264-z", "author": [ "S. Brdar","M. Baldauf","A. Dedner","R. Klöfkorn" ], "authors": [ {"first" : "S.", "last" : "Brdar"}, {"first" : "M.", "last" : "Baldauf"}, {"first" : "A.", "last" : "Dedner"}, {"first" : "R.", "last" : "Klöfkorn"} ], "pages": "1-20", "issn" : "0935-4964", "owner" : "kohlsk", "language" : "English", "doi" : "10.1007/s00162-012-0264-z", "bibtexKey": "brdar2012comparison" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2c8514045542b75bf235e4b95dc4e664d/mhartmann", "tags" : [ "Compressible","Density","Discontinuous","Euler;","Finite","Galerkin;","Inertia","Navier???Stokes;","current;","differences;","flow;","gravity","vorlaeufig" ], "intraHash" : "c8514045542b75bf235e4b95dc4e664d", "interHash" : "6904f2bea4a01c1e6a3c31769a8fccbf", "label" : "Comparison of dynamical cores for NWP models: comparison of COSMO\n\tand Dune", "user" : "mhartmann", "description" : "", "date" : "2018-07-20 10:54:15", "changeDate" : "2018-07-20 08:54:15", "count" : 2, "pub-type": "article", "journal": "Theoretical and Computational Fluid Dynamics","publisher":"Springer-Verlag", "year": "2012", "url": "http://dx.doi.org/10.1007/s00162-012-0264-z", "author": [ "S. Brdar","M. Baldauf","A. Dedner","R. Klöfkorn" ], "authors": [ {"first" : "S.", "last" : "Brdar"}, {"first" : "M.", "last" : "Baldauf"}, {"first" : "A.", "last" : "Dedner"}, {"first" : "R.", "last" : "Klöfkorn"} ], "pages": "1-20", "issn" : "0935-4964", "owner" : "kohlsk", "language" : "English", "doi" : "10.1007/s00162-012-0264-z", "bibtexKey": "brdar2012comparison" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/21d148ccdd30076bbef14d9f3f248288e/geoinst", "tags" : [ "orbits;","field;","data","GOCE;","tracking;","orbit","satellite-to-satellite","kinematic","variances;","weighting","from:mantoni","gravity" ], "intraHash" : "1d148ccdd30076bbef14d9f3f248288e", "interHash" : "4e9ae2ca88fa663e5b053ecdb384388a", "label" : "GOCE Long-Wavelength Gravity Field Recovery from 1s-Sampled Kinematic Orbits Using the Acceleration Approach", "user" : "geoinst", "description" : "", "date" : "2018-06-25 10:22:24", "changeDate" : "2018-06-25 08:22:24", "count" : 3, "pub-type": "inproceedings", "booktitle": "Gravity, Geoid and Height Systems","series": "International Association of Geodesy Symposia","publisher":"Springer International Publishing Switzerland", "year": "2014", "url": "", "author": [ "Tilo Reubelt","Oliver Baur","Matthias Weigelt","Matthias Roth","Nico Sneeuw" ], "authors": [ {"first" : "Tilo", "last" : "Reubelt"}, {"first" : "Oliver", "last" : "Baur"}, {"first" : "Matthias", "last" : "Weigelt"}, {"first" : "Matthias", "last" : "Roth"}, {"first" : "Nico", "last" : "Sneeuw"} ], "editor": [ "Urs Marti" ], "editors": [ {"first" : "Urs", "last" : "Marti"} ], "volume": "141","pages": "21--26", "location" : "IAG Symposium GGHS2012, Venice, Italy", "entrysubtype" : "reviewed", "eventdate" : "2012-10-09/2012-10-12", "doi" : "10.1007/978-3-319-10837-7_3", "bibtexKey": "Reubelt2014" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/21d148ccdd30076bbef14d9f3f248288e/mantoni", "tags" : [ "GOCE;","data","field;","gravity","kinematic","orbit","orbits;","satellite-to-satellite","tracking;","variances;","weighting" ], "intraHash" : "1d148ccdd30076bbef14d9f3f248288e", "interHash" : "4e9ae2ca88fa663e5b053ecdb384388a", "label" : "GOCE Long-Wavelength Gravity Field Recovery from 1s-Sampled Kinematic Orbits Using the Acceleration Approach", "user" : "mantoni", "description" : "", "date" : "2018-06-25 10:22:13", "changeDate" : "2018-06-25 08:22:13", "count" : 3, "pub-type": "inproceedings", "booktitle": "Gravity, Geoid and Height Systems","series": "International Association of Geodesy Symposia","publisher":"Springer International Publishing Switzerland", "year": "2014", "url": "", "author": [ "Tilo Reubelt","Oliver Baur","Matthias Weigelt","Matthias Roth","Nico Sneeuw" ], "authors": [ {"first" : "Tilo", "last" : "Reubelt"}, {"first" : "Oliver", "last" : "Baur"}, {"first" : "Matthias", "last" : "Weigelt"}, {"first" : "Matthias", "last" : "Roth"}, {"first" : "Nico", "last" : "Sneeuw"} ], "editor": [ "Urs Marti" ], "editors": [ {"first" : "Urs", "last" : "Marti"} ], "volume": "141","pages": "21--26", "location" : "IAG Symposium GGHS2012, Venice, Italy", "entrysubtype" : "reviewed", "eventdate" : "2012-10-09/2012-10-12", "doi" : "10.1007/978-3-319-10837-7_3", "bibtexKey": "Reubelt2014" } ] }