Hydrological impacts on seasonal sea level change

Chen, Jianli; Wilson, Clark R.; Tapley, Byron D; Chambers, D. P.; Pekker, T.

doi:10.1016/s0921-8181(01)00147-3

Cited by 12 publications

(14 citation statements)

References 8 publications

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“…Figure 2 shows global mean sea level change (blue curve) after the linear trend is removed. The seasonal steric contribution estimated from WOA01 (red curve) is similar in magnitude to the altimeter measurement, but of opposite phase, consistent with previous studies (Chen et al 1998(Chen et al , 2002aMinster et al 1999). The green curve shows non-steric global mean sea level change (AVISO altimetry minus WOA01 steric estimate).…”

Section: Observed Global Mean Sea Level Changesupporting

confidence: 89%

“…A new estimate of steric effects is derived from the recent WOA01 climatology. The three estimates agree remarkably well, with difference in phase of only 6 days, significantly better than in previous studies (e.g., Chen et al 1998Chen et al , 2002aMinster et al 1999;Cazenave et al 2000).…”

Section: Discussionsupporting

confidence: 57%

“…Hydrological contributions to global mean sea level change estimated from GLDAS storage changes and NCEP atmospheric (water vapor) storage variation show better agreement with altimetry relative to previous studies (Chen et al 1998(Chen et al , 2002aMinster et al 1999;Cazenave et al 2000;Milly et al 2003). This is consistent with continuing improvement in GLDAS.…”

Section: Discussionsupporting

confidence: 52%

“…Previous studies (e.g., Chen et al 1998Chen et al , 2002aMinster et al 1999;Cazenave et al 2000) show reasonable agreement between T/P non-steric seasonal sea level change and climate model estimates from changes in terrestrial water storage. However, there is considerable variability in the amplitude of the annual signal among the climate models, with estimates in the range of 5.6-18 mm.…”

Section: Introductionsupporting

confidence: 54%

“…Maximum and minimum global mean sea levels occur around September and March, respectively. Previous studies (e.g., Chen et al 1998Chen et al , 2002aMinster et al 1999;Cazenave et al 2000) suggested that T/P seasonal changes can largely be accounted for by adding together separate effects of steric (temperature and salinity) and non-steric water mass exchange between the oceans and land. These earlier studies were limited by the immaturity of hydrological models used to estimate changes in terrestrial storage, and uncertainty in steric effects estimated from available seasonal climatology of ocean temperature and salinity.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal global mean sea level change from satellite altimeter, GRACE, and geophysical models

Chen¹,

Wilson

Tapley³

et al. 2005

J Geodesy

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We estimate seasonal global mean sea level changes using different data resources, including sea level anomalies from satellite radar altimetry, ocean temperature and salinity from the World Ocean Atlas 2001, time-variable gravity observations from the Gravity Recovery and Climate Experiment (GRACE) mission, and terrestrial water storage and atmospheric water vapor changes from the NASA global land data assimilation system and National Centers for Environmental Prediction reanalysis atmospheric model. The results from all estimates are consistent in amplitude and phase at the annual period, in some cases with remarkably good agreement. The results provide a good measure of average annual variation of water stored within atmospheric, land, and ocean reservoirs. We examine how varied treatments of degree-2 and degree-1 spherical harmonics from GRACE, laser ranging, and Earth rotation variations affect GRACE mean sea level change estimates. We also show that correcting the standard equilibrium ocean pole tide correction for mass conser- vation is needed when using satellite altimeter data in global mean sea level studies. These encouraging results indicate that is reasonable to consider estimating longer-term time series of water storage in these reservoirs, as a way of tracking climate change.

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Section: Observed Global Mean Sea Level Changesupporting

confidence: 89%