Cross-disciplinary climate research in service of society
Big Rain Events in SE
Headline News Archive
List All Affiliates
Search By Map
Join Us / Register
1-2 of 2 records found matching your query:
Search within Results:
Deep Sea Res
Cazenave, A., Meyssignac, B., Ablain, M., Balmaseda, M., Bamber, J., Barletta, V., et al. (2019). Global sea-level budget 1993present.
Earth Syst. Sci. Data
Global mean sea level is an integral of changes occurring in the climate system in response to unforced climate variability as well as natural and anthropogenic forcing factors. Its temporal evolution allows changes (e.g.,acceleration) to be detected in one or more components. Study of the sea-level budget provides constraints on missing or poorly known contributions, such as the unsurveyed deep ocean or the still uncertain land water component. In the context of the World Climate Research Programme Grand Challenge entitled "Regional Sea Level and Coastal Impacts", an international effort involving the sea-level community worldwide has been recently initiated with the objective of assessing the various datasets used to estimate components of the sea-level budget during the altimetry era (1993 to present). These datasets are based on the combination of a broad range of space-based and in situ observations, model estimates, and algorithms. Evaluating their quality, quantifying uncertainties and identifying sources of discrepancies between component estimates is extremely useful for various applications in climate research. This effort involves several tens of scientists from about 50 research teams/institutions worldwide (www.wcrp-climate.org/grand-challenges/gc-sea-level, last access: 22 August 2018). The results presented in this paper are a synthesis of the first assessment performed during 2017-2018. We present estimates of the altimetry-based global mean sea level (average rate of 3.1 +/- 0.3mm yr(-1) and acceleration of 0.1 mm yr(-2) over 1993-present), as well as of the different components of the sea-level budget (http://doi.org/10.17882/54854, last access: 22 August 2018). We further examine closure of the sea-level budget, comparing the observed global mean sea level with the sum of components. Ocean thermal expansion, glaciers, Greenland and Antarctica contribute 42%, 21%, 15% and 8% to the global mean sea level over the 1993-present period. We also study the sea-level budget over 2005-present, using GRACE-based ocean mass estimates instead of the sum of individual mass components. Our results demonstrate that the global mean sea level can be closed to within 0.3 mm yr(-1) (1 sigma). Substantial uncertainty remains for the land water storage component, as shown when examining individual mass contributions to sea level.
FOREST RESOURCES ASSESSMENT
TERRESTRIAL WATER STORAGE
VERTICAL LAND MOTION
COVER DATA SET
| Save citation:
| Export record:
Mitchum, G., Dutton, A., Chambers, D. P., & Wdowinski, S. (2017). Sea level rise. In E. P. Chassignet, J. W. Jones, V. Misra, & J. Obeysekera (Eds.),
Florida's climate: Changes, variations, & impacts
(pp. 557–578). Gainesville, FL: Florida Climate Institute.
Sea level rise is naturally a topic of concern to many Floridians. Our intention in this chapter is to give the reader enough information on this topic to inform decisions about future adaptation strategies. We begin by reviewing how we measure sea level and the reasons that sea level can change. At the global level, the problem is relatively simple in that globally averaged sea level can only increase if water is added to the ocean or the ocean warms. The situation is more complicated at the local level, where variations can occur (e.g., due to changes in wind and ocean current patterns, and differences in vertical land motion rates). We present summaries of global sea level change over several time scales, ranging from the modern day to the geological records. Although we have confidence in estimates of the rate of global mean sea level change, determining from observations whether the rate is increasing, or accelerating, is more challenging. Over the next century, sea level change in Florida is expected to follow the global trend reasonably closely, but on shorter time scales and in different localities some variations are inevitable. We end with a discussion of the future sea level rise projections for Florida that should form the basis for efforts to plan adaptation strategies.
Vertical land motion
Last Glacial Maximum
| Save citation:
| Export record:
All Found Records
The Florida Climate Institute (FCI) is a multi-disciplinary network of national and international research and public organizations, scientists, and individuals concerned with achieving a better understanding of climate variability and change.
Copyright © Florida Climate Institute. All rights reserved.