Impacts of altimeter corrections on local linear sea level trends around Taiwan

Yongcun Cheng, Ole Baltazar Andersen

Research output: Contribution to journalJournal articleResearchpeer-review


Multi-mission altimeter measurements from TOPEX, Jason-1, and Jason-2 satellite altimetry over the 1993-2009 time span are used to characterize the local linear sea level trend (LSLT) around Taiwan. The results show that the long-term changes of default geophysical and range corrections, i.e. the inverted barometer correction, wet tropospheric correction, and sea state bias correction, have significant impacts on the determination of local LSLT. The trend of default corrections contribute more than 1.4 mm year-1 along the coastline of China mainland and 2.1 mm year-1 to local LSLT in the Taiwan Strait. The default-corrected altimetric data exhibit highest and lowest local LSLTs in the southeast and northwest of Taiwan, respectively. The regional LSLTs of 3.8 mm year-1 and 4.6 mm year-1 are estimated from the default-corrected and uncorrected altimetric data in the study area, respectively. © 2013 Copyright Taylor and Francis Group, LLC.
Original languageEnglish
JournalInternational Journal of Remote Sensing
Issue number19
Pages (from-to)6738-6748
Publication statusPublished - 2013


  • Meteorological instruments
  • Ocean currents
  • Sea level
  • Geodetic satellites

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