Alejandro Blazquez

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Email : alejandro.blazquezDear bot, you won't get my mail address@and my domain...legos.obs-mip.fr

Alejandro rejoined the CNES at 2006 as space mechanics engineer in interplanetary and reentry studies. He worked in the ROSETTA/PHILAE mission and was in charge of the mission analysis for the landing site selection and operations. After the landing of Philae in the comet, he joined the Laboratoire d’Etudes en Géographie et Océanographie Spatiales (LEGOS) in 2015. He received the Ph.D. degree from Universite de Toulouse III, France, in 2020 with a thesis on the satellite characterization of the water mass exchange between ocean and continents at interannual to decadal timescales. His area of specialization is the spatial geodesy and his research interests are focused on the causes of the sea-level rise and the global water budget at interannual to multidecadal timescales.

CV / functions

Educational

2020	Ph.D thesis in Space Geodesy (University of Toulouse)
2005	Aeronautical engineer degree at ETSIA (Escuela Tecnica superior de ingenieros aeronauticos, Madrid)

Professional Experience

Since 2015

Scientist at LEGOS

– Ph.D. thesis (2016-2020)

2006-2015

Engineer at CNES:

– Landing site selection and operations for the Philae/Rosetta Mission (2010-2015)

– Rentry and safety studies (2006-2011)

Research

Datasets

Ensemble of GRACE/GRACE FO solutions including products from different centers and different post-processing parameters (geocenter motion, C20 corrections, the filtering technic, the leakage correction over a 300-km-wide zone off the coastlines and the GIA corrections).
Data Description and FTP

Responsibilities

Member of the GRGS scientific committee since 2018.

Publications

2023

Goux, O, J Pfeffer, A Blazquez, A T Weaver, et M Ablain. « A mass conserving filter based on diffusion for gravity recovery and climate experiment (GRACE) spherical harmonics solutions ». Geophysical Journal International 234, n^o 1 (1 juillet 2023): 56‑72. https://doi.org/10.1093/gji/ggad016.
Delva, Pacôme, Zuheir Altamimi, Alejandro Blazquez, Mathis Blossfeld, Johannes Böhm, Pascal Bonnefond, Jean-Paul Boy, et al. « GENESIS: Co-Location of Geodetic Techniques in Space ». Earth, Planets and Space 75, n^o 1 (11 janvier 2023): 5. https://doi.org/10.1186/s40623-022-01752-w.

2022

Marti, Florence, Alejandro Blazquez, Benoit Meyssignac, Michaël Ablain, Anne Barnoud, Robin Fraudeau, Rémi Jugier, et al. « Monitoring the Ocean Heat Content Change and the Earth Energy Imbalance from Space Altimetry and Space Gravimetry ». Earth System Science Data 14, n^o 1 (26 janvier 2022): 229‑49. https://doi.org/10.5194/essd-14-229-2022.

2021

Abdalla, Saleh, Abdolnabi Abdeh Kolahchi, Michaël Ablain,[…], Alejandro Blazquez, et al. « Altimetry for the Future: Building on 25 Years of Progress ». Advances in Space Research, 25 Years of Progress in Radar Altimetry, 68, n^o 2 (15 juillet 2021): 319‑63. https://doi.org/10.1016/j.asr.2021.01.022.

2020

Blazquez A. (2020) Satellite characterization of water mass exchange between ocean and continents at interannual to decadal timescales [Phd]

2019

Shepherd, A., E. R. Ivins, E Rignot, A. Blazquez, & Imbie TEAM. « Mass Balance of the Greenland Ice Sheet from 1992 to 2018 ». Nature, 10 décembre 2019, 1‑1. https://doi.org/10.1038/s41586-019-1855-2.
Meyssignac, Benoit, Tim Boyer, Zhongxiang Zhao, Maria Z. Hakuba, Felix W. Landerer, Detlef Stammer, Armin Köhl, et al. « Measuring Global Ocean Heat Content to Estimate the Earth Energy Imbalance ». Frontiers in Marine Science 6 (2019). https://doi.org/10.3389/fmars.2019.00432.
Llovel, William, S. Purkey, B. Meyssignac, A. Blazquez, N. Kolodziejczyk, et J. Bamber. « Global Ocean Freshening, Ocean Mass Increase and Global Mean Sea Level Rise over 2005–2015 ». Scientific Reports 9, n^o 1 (27 novembre 2019): 1‑10. https://doi.org/10.1038/s41598-019-54239-2.

2018

Shepherd, A., E. Ivins, E Rignot, Ben Smith, M van der Broeke, I. Velicogna, Pippa L. Whitehouse, et al. « Mass Balance of the Antarctic Ice Sheet from 1992 to 2017 ». Nature 558, n^o 7709 (juin 2018): 219‑22. https://doi.org/10.1038/s41586-018-0179-y.
Cazenave, A, B. Meyssignac, M. Ablain, M. Balmaseda, J. Bamber, V. R. Barletta, B. Beckley, et al. « Global Sea-Level Budget 1993–Present ». Earth System Science Data 10, n^o 3 (28 août 2018): 1551‑90. https://doi.org/10.5194/essd-10-1551-2018.
Blazquez, A., B. Meyssignac, J. M. Lemoine, E. Berthier, A. Ribes, et A. Cazenave. « Exploring the Uncertainty in GRACE Estimates of the Mass Redistributions at the Earth Surface: Implications for the Global Water and Sea Level Budgets ». Geophysical Journal International 215, n^o 1 (1 octobre 2018): 415‑30. https://doi.org/10.1093/gji/ggy293.

2017

Carret, A., J. A. Johannessen, O. B. Andersen, M. Ablain, P. Prandi, A. Blazquez, et A. Cazenave. « Arctic Sea Level During the Satellite Altimetry Era ». Surveys in Geophysics 38, n^o 1 (1 janvier 2017): 251‑75. https://doi.org/10.1007/s10712-016-9390-2.

Teaching

TESS master: module space geodesy (https://tess.omp.eu/masters-programme/interdisciplinary-options/space-geodesy-sensing-changes-on-the-earth-system/)

Alejandro Blazquez

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