Articles | Volume 384
https://doi.org/10.5194/piahs-384-31-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/piahs-384-31-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Validation of the altimetry-based water levels from Sentinel-3A and B in the Inner Niger Delta
Adama Telly Diepkilé
CORRESPONDING AUTHOR
DER Math-Informatique, FST/USTTB, Bamako, BP:E3206, Mali
Flavien Egon
LEGOS, UMR 5566, University of Toulouse, CNES/CNRS/IRD/UPS. OMP,
Toulouse, France
Fabien Blarel
GET, UMR 5563, University of Toulouse, CNRS/IRD/UPS. OMP, Toulouse,
France
Eric Mougin
GET, UMR 5563, University of Toulouse, CNRS/IRD/UPS. OMP, Toulouse,
France
Frédéric Frappart
LEGOS, UMR 5566, University of Toulouse, CNES/CNRS/IRD/UPS. OMP,
Toulouse, France
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Cited articles
Abdalla, S., Kolachina, A., Adusumilli, S., Bhowmick, A., Alou-Font, E., Amarouche, L., Andersen, O. B., Naeije, M. C., Simons, W. J. F., et al.: Altimetry for the future: Building on 25 years of progress, Adv. Space Res., 68, 319–363, https://doi.org/10.1016/j.asr.2021.01.022, 2021.
Biancamaria, S., Frappart, F., Leleu, A.-S. S., Marieu, V., Blumstein, D.,
Desjonquères, J.-D., Boy, F., Sottolichio, A., and
Valle-Levinson, A.: Satellite radar altimetry water elevations performance
over a 200 m wide river: Evaluation over the Garonne River, Adv. Sp. Res.,
59, 128–146, https://doi.org/10.1016/j.asr.2016.10.008, 2017.
Birkett, C., Reynolds, C., Beckley, B., and Doorn, B.: From research to
operations: The USDA global reservoir and lake monitor, in Coastal
Altimetry, Springer Berlin Heidelberg, Berlin, Heidelberg, 19–50,
2011.
Bogning, S., Frappart, F., Blarel, F., Niño, F., Mahé, G., Bricquet,
J. P., Seyler, F., Onguéné, R., Etamé, J., Paiz, M. C., and
Braun, J. J.: Monitoring water levels and discharges using radar altimetry
in an ungauged river basin: The case of the Ogooué, Remote Sens., 10,
350, https://doi.org/10.3390/rs10020350, 2018.
Bonnefond, P., Haines, B. J., and Watson, C.: In situ Absolute Calibration
and Validation: A Link from Coastal to Open-Ocean Altimetry, in Coastal
Altimetry, Springer Berlin Heidelberg, Berlin, Heidelberg, 259–296,
2011.
CTOH: Centre de Topographie des Océans et l’Hydrosphère, AlTiS – Altimetric Time Series Software, [code] available at: https://www.iddn.org/cgi-iddn/certificat.cgi?IDDN.FR.010.0121234.000.R.X.2020.041.30000 (last access: 4 July 2021) 2020.
Crétaux, J.-F., Nielsen, K., Frappart, F., Papa, F., Calmant, S., and
Benveniste, J.: Hydrological applications of satellite altimetry: rivers,
lakes, man-made reservoirs, inundated areas, in: Satellite Altimetry Over
Oceans and Land Surfaces, edited by: Stammer, D. and Cazenave, A.,
CRC Press., 459–504, 2017.
Crétaux, J. F., Calmant, S., Romanovski, V., Shabunin, A., Lyard, F.,
Bergé-Nguyen, M., Cazenave, A., Hernandez, F. and Perosanz, F.: An
absolute calibration site for radar altimeters in the continental domain:
Lake Issykkul in Central Asia, J. Geod., 83, 723–735,
https://doi.org/10.1007/s00190-008-0289-7, 2009.
Donlon, C., Berruti, B., Buongiorno, A., Ferreira, M. H., Féménias,
P., Frerick, J., Goryl, P., Klein, U., Laur, H., Mavrocordatos, C., Nieke,
J., Rebhan, H., Seitz, B., Stroede, J., and Sciarra, R.: The Global
Monitoring for Environment and Security (GMES) Sentinel-3 mission, Remote
Sens. Environ., 120, 37–57, https://doi.org/10.1016/j.rse.2011.07.024, 2012.
Frappart, F., Calmant, S., Cauhopé, M., Seyler, F., and Cazenave, A.:
Preliminary results of ENVISAT RA-2-derived water levels validation over the
Amazon basin, Remote Sens. Environ., 100, 252–264,
https://doi.org/10.1016/j.rse.2005.10.027, 2006.
Frappart, F., Fatras, C., Mougin, E., Marieu, V., Diepkilé, A. T.,
Blarel, F., and Borderies, P.: Radar altimetry backscattering signatures at
Ka, Ku, C, and S bands over West Africa, Phys. Chem. Earth, 83, 96–110,
https://doi.org/10.1016/j.pce.2015.05.001, 2015.
Frappart, F., Blarel, F., Fayad, I., Bergé-Nguyen, M., Crétaux,
J.-F., Shu, S., Schregenberger, J., and Baghdadi, N.: Evaluation of the
Performances of Radar and Lidar Altimetry Missions for Water Level
Retrievals in Mountainous Environment: The Case of the Swiss Lakes, Remote
Sens., 13, 2196, https://doi.org/10.3390/rs13112196, 2021.
Goita, K. and Diepkile, A. T.: Radar altimetry of water level variability in
the Inner Delta of Niger River, in 2012 IEEE International Geoscience and
Remote Sensing Symposium, IEEE., 5262–5265, 2012.
Kittel, C. M. M., Jiang, L., Tøttrup, C., and Bauer-Gottwein, P.: Sentinel-3 radar altimetry for river monitoring – a catchment-scale evaluation of satellite water surface elevation from Sentinel-3A and Sentinel-3B, Hydrol. Earth Syst. Sci., 25, 333–357, https://doi.org/10.5194/hess-25-333-2021, 2021.
Mahé, G., Bamba, F., Soumaguel, A., Orange, D., and Olivry, J. C.: Water
losses in the inner delta of the River Niger: water balance and flooded
area, Hydrol. Process., 23, 3157–3160, https://doi.org/10.1002/hyp.7389, 2009.
Mertikas, S. P., Donlon, C., Féménias, P., Mavrocordatos, C.,
Galanakis, D., Tripolitsiotis, A., Frantzis, X., Tziavos, I. N., Vergos, G.
and Guinle, T.: Fifteen years of Cal/Val service to reference altimetry
missions: Calibration of satellite altimetry at the permanent facilities in
Gavdos and Crete, Greece, Remote Sens., 10, 1557,
https://doi.org/10.3390/rs10101557, 2018.
Normandin, C., Frappart, F., Diepkilé, A. T., Marieu, V., Mougin, E.,
Blarel, F., Lubac, B., Braquet, N., and Ba, A.: Evolution of the performances
of radar altimetry missions from ERS-2 to Sentinel-3A over the Inner Niger
Delta, [code, data set], Remote Sens., 10, 833, https://doi.org/10.3390/rs10060833, 2018.
Seiler, R., Schmidt, J., Diallo, O., and Csaplovics, E.: Flood monitoring in
a semi-arid environment using spatially high resolution radar and optical
data, J. Environ. Manage., 90, 2121–2129,
https://doi.org/10.1016/j.jenvman.2007.07.035, 2009.
Shu, S., Liu, H., Beck, R. A., Frappart, F., Korhonen, J., Lan, M., Xu, M., Yang, B., and Huang, Y.: Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records, Hydrol. Earth Syst. Sci., 25, 1643–1670, https://doi.org/10.5194/hess-25-1643-2021, 2021.
Stammer, D. and Cazenave, A.: Satellite altimetry over oceans and land
surfaces, Taylor & Francis, Boca Raton, FL., 2017.
Taburet, N., Zawadzki, L., Vayre, M., Blumstein, D., Le Gac, S., Boy, F.,
Raynal, M., Labroue, S., Crétaux, J.-F., and Femenias, P.: S3MPC:
Improvement on Inland Water Tracking and Water Level Monitoring from the
OLTC Onboard Sentinel-3 Altimeters, Remote Sens., 12, 3055,
https://doi.org/10.3390/rs12183055, 2020.
Wingham, D. J., Rapley, C. G., and Griffiths, H.: New Techniques in Satellite
Altimeter Tracking Systems, Proc. IGARSS Symp. Zurich, (SEPTEMBER 1986),
1339–1344, 1986.
Zwarts, L., Beuering, V. B., Kone, B., and Wymenga, E.: The Niger , a
lifeline: effective water management in the Upper Niger Basin., 2005.