scholarly journals High resolution sea-level history for the Gulf of Mexico since the last glacial maximum

2004 ◽  
Keyword(s):  
High Resolution ◽  
Gulf Of Mexico ◽  
Sea Level ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
The Last Glacial

scholarly journals Gridded climate data from 5 GCMs of the Last Glacial Maximum downscaled to 30 arc s for Europe

2015 ◽  
Vol 11 (3) ◽  
pp. 2585-2613 ◽  
Author(s):  
D. R. Schmatz ◽  
J. Luterbacher ◽  
N. E. Zimmermann ◽  
P. B. Pearman
Keyword(s):  
High Resolution ◽  
Sea Level ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Baseline Data ◽  
Climate Data ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
Very High ◽  
The Last Glacial

Abstract. Studies of the impacts of historical, current and future global change require very high-resolution climate data (≤ 1 km) as a basis for modelled responses, meaning that data from digital climate models generally require substantial rescaling. Another shortcoming of available datasets on past climate is that the effects of sea level rise and fall are not considered. Without such information, the study of glacial refugia or early Holocene plant and animal migration are incomplete if not impossible. Sea level at the last glacial maximum (LGM) was approximately 125 m lower, creating substantial additional terrestrial area for which no current baseline data exist. Here, we introduce the development of a novel, gridded climate dataset for LGM that is both very high resolution (1 km) and extends to the LGM sea and land mask. We developed two methods to extend current terrestrial precipitation and temperature data to areas between the current and LGM coastlines. The absolute interpolation error is less than 1 and 0.5 °C for 98.9 and 87.8 %, respectively, of all pixels within two arc degrees of the current coastline. We use the change factor method with these newly assembled baseline data to downscale five global circulation models of LGM climate to a resolution of 1 km for Europe. As additional variables we calculate 19 "bioclimatic" variables, which are often used in climate change impact studies on biological diversity. The new LGM climate maps are well suited for analysing refugia and migration during Holocene warming following the LGM.

scholarly journals Sea-level evolution of the Laptev Sea and the East Siberian Sea since the last glacial maximum

arktos ◽  
2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Volker Klemann ◽  
Birgit Heim ◽  
Henning A. Bauch ◽  
Sebastian Wetterich ◽  
Thomas Opel
Keyword(s):  
Sea Level ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Laptev Sea ◽  
Last Glacial ◽  
East Siberian Sea ◽  
The Last Glacial Maximum ◽  
The Laptev Sea ◽  
The Last Glacial

Reappraisal of sea-level lowstand during the Last Glacial Maximum observed in the Bonaparte Gulf sediments, northwestern Australia

2016 ◽  
Vol 397 ◽  
pp. 373-379 ◽  
Author(s):  
Takeshige Ishiwa ◽  
Yusuke Yokoyama ◽  
Yosuke Miyairi ◽  
Stephen Obrochta ◽  
Takenori Sasaki ◽  
...  
Keyword(s):  
Sea Level ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Last Glacial ◽  
Northwestern Australia ◽  
The Last Glacial Maximum ◽  
The Last Glacial

High-resolution climate simulation of the last glacial maximum

2007 ◽  
Vol 31 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Seong-Joong Kim ◽  
Thomas J. Crowley ◽  
David J. Erickson ◽  
Bala Govindasamy ◽  
Phillip B. Duffy ◽  
...  
Keyword(s):  
High Resolution ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Climate Simulation ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
The Last Glacial

scholarly journals High-resolution interpolar difference of atmospheric methane around the Last Glacial Maximum

2012 ◽  
Vol 9 (5) ◽  
pp. 5471-5508 ◽  
Author(s):  
M. Baumgartner ◽  
A. Schilt ◽  
O. Eicher ◽  
J. Schmitt ◽  
J. Schwander ◽  
...  
Keyword(s):  
High Resolution ◽  
Last Glacial Maximum ◽  
Methane Concentration ◽  
Ice Cores ◽  
Glacial Maximum ◽  
Atmospheric Methane ◽  
Before Present ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
The Last Glacial

Abstract. Reconstructions of past atmospheric methane concentrations are available from ice cores from both, Greenland and Antarctica. The difference observed between the two polar methane concentration levels is a valuable additional parameter which allows to constrain the geographical location of the responsible methane sources. Here we present new high-resolution methane records from the North Greenland Ice Core Project (NGRIP) and the European Project for Ice Coring in Antarctica (EPICA) Dronning Maud Land (EDML) ice cores covering Termination 1, the Last Glacial Maximum, and parts of the last glacial back to 32 000 years before present. Due to the high-resolution records the synchronisation between the ice cores from NGRIP and EDML is considerably improved and the interpolar concentration difference of methane is determined with unprecedented precision and temporal resolution. Relative to the mean methane concentration, we find a rather stable positive interpolar difference throughout the record with its minimum value of 3.7 ± 0.7 % between 21 900–21 200 years before present, which is higher than previously estimated in this interval close to the Last Glacial Maximum. This implies that Northern Hemisphere boreal wetland sources were never completely shut off during the peak glacial. Starting at 21 000 years before present, i.e. severval millenia prior to the transition into the Holocene, the relative interpolar difference becomes even more positive and stays at a fairly stable level of 6.5 ± 0.8 % during Termination 1. We hypothesise that the anti-correlation observed in the monsoon records from the Northern and Southern Hemispheres induces a methane source redistribution within lower latitudes, which could explain parts of the variations in the interpolar difference.

Sign in / Sign up

Export Citation Format

Share Document