Next Article in Journal
Widespread Decline in Vegetation Photosynthesis in Southeast Asia Due to the Prolonged Drought During the 2015/2016 El Niño
Previous Article in Journal
Assessment of Individual Tree Detection and Canopy Cover Estimation using Unmanned Aerial Vehicle based Light Detection and Ranging (UAV-LiDAR) Data in Planted Forests
Previous Article in Special Issue
Downscaling GRACE TWSA Data into High-Resolution Groundwater Level Anomaly Using Machine Learning-Based Models in a Glacial Aquifer System
Article Menu

Export Article

Open AccessArticle
Remote Sens. 2019, 11(8), 909; https://doi.org/10.3390/rs11080909

The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017

1
Technische Universität Dresden, Institut für Planetare Geodäsie, 01062 Dresden, Germany
2
Laboratorio MAGGIA, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, La Plata B1900FWA, Argentina
3
Consejo Nacional de Investigaciones Científicas y Técnicas CONICET, La Plata B1904CMC, Argentina
4
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
5
Estación Astronómica Río Grande, Río Grande V9420EAR, Argentina
*
Author to whom correspondence should be addressed.
Received: 18 March 2019 / Revised: 4 April 2019 / Accepted: 10 April 2019 / Published: 14 April 2019
(This article belongs to the Special Issue Remote Sensing by Satellite Gravimetry)
  |  
PDF [6037 KB, uploaded 14 April 2019]
  |  

Abstract

We use the complete gravity recovery and climate experiment (GRACE) Level-2 monthly time series to derive the ice mass changes of the Patagonian Icefields (Southern Andes). The glacial isostatic adjustment is accounted for by a regional model that is constrained by global navigation satellite systems (GNSS) uplift observations. Further corrections are applied concerning the effect of mass variations in the ocean, in the continental water storage, and of the Antarctic ice sheet. The 161 monthly GRACE gravity field solutions are inverted in the spatial domain through the adjustment of scaling factors applied to a-priori ice mass change patterns based on published remote sensing results for the Southern and Northern Patagonian Icefields, respectively. We infer an ice mass change rate of −24.4 ± 4.7 Gt/a for the Patagonian Icefields between April 2002 and June 2017, which corresponds to a contribution to the eustatic sea level rise of 0.067 ± 0.013 mm/a. Our time series of monthly ice mass changes reveals no indication for an acceleration in ice mass loss. We find indications that the Northern Patagonian Icefield contributes more to the integral ice loss than previously assumed. View Full-Text
Keywords: ice mass; satellite gravimetry; Patagonia; GRACE ice mass; satellite gravimetry; Patagonia; GRACE
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Richter, A.; Groh, A.; Horwath, M.; Ivins, E.; Marderwald, E.; Hormaechea, J.L.; Perdomo, R.; Dietrich, R. The Rapid and Steady Mass Loss of the Patagonian Icefields throughout the GRACE Era: 2002–2017. Remote Sens. 2019, 11, 909.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top