Merged envisat and jason satellite altimeters using crossovers adjustment to determine sea level variability

E. Y. Handoko*, Hariyadi

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


It is considered that climate change has been increasing the global air temperature and rising sea level. Thus, the monitoring of sea level is necessary to mitigate the hazard risk. For estimating sea level change from various altimetric missions, attention must be taken to determine the bias of measurements between altimetric different missions. The aim of this study is to merge both of Jason series and Envisat satellite altimeters for estimating sea level variability around the Indonesian Seas. To create sea level time series, two adjustment methods are employed: tandem mission data and sea level anomaly differences at crossovers. The adjustment using tandem mission between Jason-1 and Jason-2 obtained a relative difference of 32.8 5.4 mm. The adjustment method at crossovers is applied for combining Envisat and Jason series which is already intercalibrated. The mean crossovers differences between Envisat and reference missions are less than 2.5 cm. By using merged datasets from all missions, it is discovered that the trend in the Indonesian seas for a period of 10 years is 11.9 mm years-1. The map of sea level trends from all satellites data for that period is performed in 1° × 1° regular grids.

Original languageEnglish
Article number012035
JournalIOP Conference Series: Earth and Environmental Science
Issue number1
Publication statusPublished - 26 Nov 2018
Event3rd International Conference on Climate Change, ICCC 2018 - Solo City, Indonesia
Duration: 27 Nov 201828 Nov 2018


Dive into the research topics of 'Merged envisat and jason satellite altimeters using crossovers adjustment to determine sea level variability'. Together they form a unique fingerprint.

Cite this