Significant continental ice volumes on mid-Paleocene Antarctica? Latitudinal temperature gradients, sea level change and the carbon cycle

2014 ◽  
Vol 31 ◽  
pp. 31-32
Author(s):  
Peter Bijl
Keyword(s):  
Carbon Cycle ◽  
Sea Level ◽  
Sea Level Change ◽  
Temperature Gradients ◽  
Level Change

Phanerozoic Oxygen

2017 ◽  
Author(s):  
Donald Eugene Canfield
Keyword(s):  
Oxygen Consumption ◽  
Organic Carbon ◽  
Sea Level ◽  
Time Scale ◽  
Atmospheric Oxygen ◽  
Sea Level Change ◽  
Oxygen Production ◽  
Level Change ◽  
History Of ◽  
Geologic Processes

This chapter discusses the modeling of the history of atmospheric oxygen. The most recently deposited sediments will also be the most prone to weathering through processes like sea-level change or uplift of the land. Thus, through rapid recycling, high rates of oxygen production through the burial of organic-rich sediments will quickly lead to high rates of oxygen consumption through the exposure of these organic-rich sediments to weathering. From a modeling perspective, rapid recycling helps to dampen oxygen changes. This is important because the fluxes of oxygen through the atmosphere during organic carbon and pyrite burial, and by weathering, are huge compared to the relatively small amounts of oxygen in the atmosphere. Thus, all of the oxygen in the present atmosphere is cycled through geologic processes of oxygen liberation (organic carbon and pyrite burial) and consumption (weathering) on a time scale of about 2 to 3 million years.

SEA-LEVEL CHANGE MEDIATES GENETIC DIVERSIFICATION OF COASTAL FISHES

2017 ◽  
Author(s):  
Greer A. Dolby ◽  
◽  
David K. Jacobs ◽  
David K. Jacobs
Keyword(s):  
Sea Level ◽  
Sea Level Change ◽  
Level Change

THE EVOLUTION OF MAJURO ATOLL IN RESPONSE TO SEA-LEVEL CHANGE DURING THE MID-HOLOCENE

2017 ◽  
Author(s):  
Haunani H. Kane ◽  
◽  
Charles H. Fletcher ◽  
Shellie L. Habel ◽  
Kristian McDonald ◽  
...  
Keyword(s):  
Sea Level ◽  
Sea Level Change ◽  
Level Change

DEFINING THE RESPONSE OF A LOW GRADIENT COASTAL SYSTEM TO RAPID SEA-LEVEL CHANGE DURING THE LATE PLEISTOCENE

2019 ◽  
Author(s):  
Amy W. Cressman ◽  
◽  
David J. Mallinson ◽  
Stephen J. Culver ◽  
Regina DeWitt ◽  
...  
Keyword(s):  
Sea Level ◽  
Late Pleistocene ◽  
Sea Level Change ◽  
Coastal System ◽  
Level Change

USING SHIP SOUNDING DATA TO RECONSTRUCT LOCAL SEA LEVEL CHANGE NEAR MIDDLETON ISLAND, ALASKA

2019 ◽  
Author(s):  
Madison Boettner ◽  
◽  
Timothy Keohane ◽  
Miranda Wiebe ◽  
Carling C. Hay
Keyword(s):  
Sea Level ◽  
Sea Level Change ◽  
Level Change

scholarly journals Reconciling global mean and regional sea level change in projections and observations

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jinping Wang ◽  
John A. Church ◽  
Xuebin Zhang ◽  
Xianyao Chen
Keyword(s):  
Sea Level ◽  
Climate Models ◽  
Tide Gauge ◽  
Sea Level Change ◽  
Global Network ◽  
Weighted Mean ◽  
Level Change ◽  
Regional Sea Level ◽  
Global Mean ◽  
Regional Sea Level Change

AbstractThe ability of climate models to simulate 20th century global mean sea level (GMSL) and regional sea-level change has been demonstrated. However, the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) and Special Report on the Ocean and Cryosphere in a Changing Climate (SROCC) sea-level projections have not been rigorously evaluated with observed GMSL and coastal sea level from a global network of tide gauges as the short overlapping period (2007–2018) and natural variability make the detection of trends and accelerations challenging. Here, we critically evaluate these projections with satellite and tide-gauge observations. The observed trends from GMSL and the regional weighted mean at tide-gauge stations confirm the projections under three Representative Concentration Pathway (RCP) scenarios within 90% confidence level during 2007–2018. The central values of the observed GMSL (1993–2018) and regional weighted mean (1970–2018) accelerations are larger than projections for RCP2.6 and lie between (or even above) those for RCP4.5 and RCP8.5 over 2007–2032, but are not yet statistically different from any scenario. While the confirmation of the projection trends gives us confidence in current understanding of near future sea-level change, it leaves open questions concerning late 21st century non-linear accelerations from ice-sheet contributions.

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