Sensitivity of GPS tropospheric estimates to mesoscale convective systems in West Africa

Autor: S. Nahmani, O. Bock, F. Guichard

Publikováno v: Atmospheric Chemistry and Physics, Vol 19, Pp 9541-9561 (2019)

This study analyzes the characteristics of GPS tropospheric estimates (zenith wet delays – ZWDs, gradients, and post-fit phase residuals) during the passage of mesoscale convective systems (MCSs) and evaluates their sensitivity to the research-leve

Externí odkaz: https://doaj.org/article/302821b49dfe4334bf5c199142b79501

Use of GNSS Tropospheric Products for Climate Monitoring (Working Group 3)

Autor: Janusz Bogusz, Alberto Sá, S. Beirle, S. Nahmani, Zofia Baldysz, E. Pottiaux, Kyriakos Balidakis, D. Landskron, Rosa Pacione, José Antonio Guijarro, Marta Gruszczynska, R. Fernandes, M. Elias, Gunnar Elgered, B. Chimani, Olivier Bock, Tong Ning, C. Hackman, Grzegorz Nykiel, Katarzyna Stepniak, V. Mattioli, Wouter Dorigo, R. Van Malderen, E. Fionda, S. Zengin Kazancı, Robert Heinkelmann, Machiel Bos, Johannes Böhm, Andrzej Araszkiewicz, F. Ahmed, A. Ramos, Carla Barroso, H. Valentim, B. Mircheva, A. Xaver, M. Cadeddu, G. Stankunavicius, Jonathan Jones, Pedro Viterbo, J. P. Martins, Paul Rebischung, R. Nilsson, J. Berckmans, Mariusz Figurski, Harald Schuh, A. Parracho, Sophie Bastin, E. Brockmann, Anna Klos, Guergana Guerova, Jan Dousa, Pascal Willis

Publikováno v: Advanced GNSS Tropospheric Products for Monitoring Severe Weather Events and Climate
Jonathan Jones, Guergana Guerova, Jan Douša, Galina Dick, Siebren de Haan, Eric Pottiaux, Olivier Bock, Rosa Pacione, Roeland van Malderen (eds). Advanced GNSS Tropospheric Products for Monitoring Severe Weather Events and Climate, Springer International Publishing, pp.267-402, 2020, 978-3-030-13900-1. ⟨10.1007/978-3-030-13901-8_5⟩
Advanced GNSS Tropospheric Products for Monitoring Severe Weather Events and Climate ISBN: 9783030139001

International audience; There has been growing interest in recent years in the use of homogeneously reprocessed ground-based GNSS, VLBI, and DORIS measurements for climate applications. Existing datasets are reviewed and the sensitivity of tropospher

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c25098de1ef7c0ecd24f880d90c64866
https://hal-insu.archives-ouvertes.fr/insu-02290597

Comparison of individual and combined zenith tropospheric delay estimations during CONT08 campaign

Autor: Arnaud Pollet, S. Nahmani, David Coulot, Olivier Bock

Publikováno v: Journal of Geodesy
Journal of Geodesy, Springer Verlag, 2014, 88 (11), pp.1095-1112. ⟨10.1007/s00190-014-0745-5⟩

CONT campaigns are 2-week campaigns of continuous VLBI observations. The IERS working group on combination at the observation level uses these campaigns to study such combinations. In this work, combinations of DORIS, GPS, SLR, and VLBI technique mea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28ab6ed8d9851d82e68c94583dc74f3d
https://doi.org/10.1007/s00190-014-0745-5

Quality Evaluation of the Weekly Vertical Loading Effects Induced from Continental Water Storage Models

Autor: S. Nahmani, Zuheir Altamimi, Xavier Collilieux, T. van Dam, Paul Rebischung, Zhao Li

Publikováno v: International Association of Geodesy Symposia ISBN: 9783319246031
In P., Willis (Ed.), Proceedings of the 2013 IAG Scientific Assembly, Potsdam, Germany, 1-6 September, 2013 (pp. 45-54). (2015).

To remove continental water storage (CWS) signals from the GPS data, CWS mass models are needed to obtain predicted surface displacements. We compared weekly GPS height time series with five CWS models: (1) the monthly and (2) three-hourly Global Lan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a28ccb04e9bde5ddbf563f9caecc037b
https://doi.org/10.1007/1345_2015_174

Land Water Storage Changes from Ground and Space Geodesy: First Results from the GHYRAF (Gravity and Hydrology in Africa) Experiment

Autor: S. Nahmani, Guillaume Favreau, Julia Pfeffer, Luc Séguis, Marc Descloitres, Pierre Genthon, C. de Linage, Jacques Hinderer, Jean-Paul Boy, Olivier Bock, Marie Boucher, Ghyraf team

Publikováno v: Pure and Applied Geophysics
Pure and Applied Geophysics, Springer Verlag, 2011, ⟨10.1007/s00024-011-0417-9⟩
Pure and Applied Geophysics, Springer Verlag, 2012, 169 (8), pp.1391-1410. ⟨10.1007/s00024-011-0417-9⟩

International audience; This paper is devoted to the first results from the GHYRAF (Gravity and Hydrology in Africa) experiment conducted since 2008 in West Africa and is aimed at investigating the changes in water storage in different regions sampli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edd51677f5887ce0cf46826c220ecc70
https://hal-insu.archives-ouvertes.fr/insu-00648607