Details
| Original language | English |
|---|---|
| Article number | 1500605 |
| Pages (from-to) | 1-5 |
| Number of pages | 5 |
| Journal | IEEE Geoscience and Remote Sensing Letters |
| Volume | 21 |
| Early online date | 21 Dec 2023 |
| Publication status | Published - 2024 |
Abstract
Hydrogeodesy can benefit greatly from the use of Global Positioning System (GPS) displacements to analyse local changes in the hydrosphere, which the commonly used Gravity Recovery and Climate Experiment (GRACE) mission is unable to provide due to coarse spatial resolution. Hydrosphere changes recorded by GPS are unfortunately hidden among the other signals to which the system is also sensitive so that the sensitivity of GPS to changes in the hydrosphere on temporal-scales from pluri-annual to decadal is questionable. We focus on hydrosphere signatures present on these long-term temporal-scales as observed by GPS through the vertical displacement time series (DTS) of 122 permanent stations over Europe and compare them to the DTS derived from GRACE for GPS locations. Our methodology is based on the weighted Savitzky-Golay (S-G) filter, an underestimated filter in the field of geodetic time series analysis. We show that the correspondence between GPS and GRACE on long-term temporal-scales is generally strong, but decreases for coastal regions and regions where the coarse gridding of GRACE does not capture local hydrosphere effects. Further, the negative correlation with El Niño Southern Oscillations (ENSO) is confirmed for Europe.
Keywords
- Aquatic ecosystems, ENSO, Europe, Finite impulse response filters, GPS, GRACE, Global Positioning System, Hydrogeodesy, Loading, Low-pass filters, Savitzky-Golay filter, Smoothing methods, hydrosphere mass loading, global positioning system (GPS), Gravity Recovery and Climate Experiment (GRACE), Savitzky-Golay (S-G) filter, hydrogeodesy, El Niño Southern Oscillations (ENSO)
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Geoscience and Remote Sensing Letters, Vol. 21, 1500605 , 2024, p. 1-5.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Long-Term Temporal Scales of Hydrosphere Changes Observed by GPS Over Europe
T2 - A Comparison With GRACE and ENSO
AU - Kermarrec, Gaël
AU - Klos, Anna
AU - Lenczuk, Artur
AU - Bogusz, Janusz
N1 - Publisher Copyright: © 2023 IEEE.
PY - 2024
Y1 - 2024
N2 - Hydrogeodesy can benefit greatly from the use of Global Positioning System (GPS) displacements to analyse local changes in the hydrosphere, which the commonly used Gravity Recovery and Climate Experiment (GRACE) mission is unable to provide due to coarse spatial resolution. Hydrosphere changes recorded by GPS are unfortunately hidden among the other signals to which the system is also sensitive so that the sensitivity of GPS to changes in the hydrosphere on temporal-scales from pluri-annual to decadal is questionable. We focus on hydrosphere signatures present on these long-term temporal-scales as observed by GPS through the vertical displacement time series (DTS) of 122 permanent stations over Europe and compare them to the DTS derived from GRACE for GPS locations. Our methodology is based on the weighted Savitzky-Golay (S-G) filter, an underestimated filter in the field of geodetic time series analysis. We show that the correspondence between GPS and GRACE on long-term temporal-scales is generally strong, but decreases for coastal regions and regions where the coarse gridding of GRACE does not capture local hydrosphere effects. Further, the negative correlation with El Niño Southern Oscillations (ENSO) is confirmed for Europe.
AB - Hydrogeodesy can benefit greatly from the use of Global Positioning System (GPS) displacements to analyse local changes in the hydrosphere, which the commonly used Gravity Recovery and Climate Experiment (GRACE) mission is unable to provide due to coarse spatial resolution. Hydrosphere changes recorded by GPS are unfortunately hidden among the other signals to which the system is also sensitive so that the sensitivity of GPS to changes in the hydrosphere on temporal-scales from pluri-annual to decadal is questionable. We focus on hydrosphere signatures present on these long-term temporal-scales as observed by GPS through the vertical displacement time series (DTS) of 122 permanent stations over Europe and compare them to the DTS derived from GRACE for GPS locations. Our methodology is based on the weighted Savitzky-Golay (S-G) filter, an underestimated filter in the field of geodetic time series analysis. We show that the correspondence between GPS and GRACE on long-term temporal-scales is generally strong, but decreases for coastal regions and regions where the coarse gridding of GRACE does not capture local hydrosphere effects. Further, the negative correlation with El Niño Southern Oscillations (ENSO) is confirmed for Europe.
KW - Aquatic ecosystems
KW - ENSO
KW - Europe
KW - Finite impulse response filters
KW - GPS
KW - GRACE
KW - Global Positioning System
KW - Hydrogeodesy
KW - Loading
KW - Low-pass filters
KW - Savitzky-Golay filter
KW - Smoothing methods
KW - hydrosphere mass loading
KW - global positioning system (GPS)
KW - Gravity Recovery and Climate Experiment (GRACE)
KW - Savitzky-Golay (S-G) filter
KW - hydrogeodesy
KW - El Niño Southern Oscillations (ENSO)
UR - http://www.scopus.com/inward/record.url?scp=85181565584&partnerID=8YFLogxK
U2 - 10.1109/LGRS.2023.3345540
DO - 10.1109/LGRS.2023.3345540
M3 - Article
VL - 21
SP - 1
EP - 5
JO - IEEE Geoscience and Remote Sensing Letters
JF - IEEE Geoscience and Remote Sensing Letters
SN - 1545-598X
M1 - 1500605
ER -