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Fluxes of microbes,organic aerosols,dust,sea-salt Na ions,non-sea-salt Ca ions,and methanesulfonate onto Greenland and Antarctic ice
Fluxes microbes organic aerosols dust sea-salt Na ions non-sea-salt Ca ions
2010/1/19
Using a spectrofluorimeter with 224-nm laser excitation and six emission bands from 300 to 420 nm to measure fluorescence intensities at 0.3-mm depth intervals in ice cores, we report results of the f...
Wind Shifts May Stir CO2 From Antarctic Depths--Releases May Have Speeded End of Last Ice Age—And Could Act Again（图）
Wind Shifts CO2 Antarctic Depths Last Ice Age
2009/12/10
Natural releases of carbon dioxide from the Southern Ocean due to shifting wind patterns could have amplified global warming at the end of the last ice age--and could be repeated as manmade warming pr...
Antarctic summer sea ice concentration and extent:comparison of ODEN 2006 ship observations,satellite passive microwave and NIC sea ice charts
summer sea ice concentration ODEN 2006 ship observations satellite passive microwave NIC sea ice charts
2010/2/3
Antarctic sea ice cover has shown a slight increase (<1%/decade) in overall observed ice extent as derived from satellite mapping from 1979 to 2008, contrary to the decline observed in the Arctic regi...
Testing hypotheses of the cause of peripheral thinning of the Greenland Ice Sheet:is land-terminating ice thinning at anomalously high rates?
hypotheses peripheral thinning Greenland Ice Sheet high rates
2010/2/4
Recent observations have shown that the periphery of the Greenland ice sheet (GrIS) is thinning rapidly and that this thinning is greatest around marine-terminating outlet glaciers. Several theories h...
Bacteria in Himalayan glacial ice and its relationship to dust
Bacteria Himalayan glacial ice relationship dust
2010/1/18
Concentrations and community diversity of bacteria from 50 segments of a 108.83 m ice core drilled from the East Rongbuk (ER) Glacier (28.03° N, 86.96° E, 6518 m above sea level) on the northeast slop...
Partitioning of melt energy and meltwater fluxes in the ablation zone of the west Greenland ice sheet
melt energy meltwater fluxes ablation zone west Greenland ice sheet
2010/2/4
We present four years (August 2003–August 2007) of surface mass balance data from the ablation zone of the west Greenland ice sheet along the 67° N latitude circle. Sonic height rangers and automatic ...
On the limit to resolution and information on basal properties obtainable from surface data on ice streams
resolution information basal properties surface data ice streams
2010/2/4
An optimal estimation method for simultaneously determining both basal slipperiness and basal topography from variations in surface flow velocity and topography along a flow line on ice streams and ic...
Microwave single-scattering properties of randomly oriented soft-ice hydrometeors
Microwave single-scattering properties randomly oriented soft-ice hydrometeors
2010/1/28
Large ice hydrometeors are usually present in intense convective clouds and may significantly affect the upwelling radiances that are measured by satellite-borne microwave radiometers – especially, at...
Heterogeneous ice nucleation activity of bacteria:new laboratory experiments at simulated cloud conditions
Heterogeneous ice nucleation activity bacteria laboratory experiments cloud conditions
2010/1/18
The ice nucleation activities of five different Pseudomonas syringae, Pseudomonas viridiflava and Erwinia herbicola bacterial species and of Snomax™ were investigated in the temperature range be...
A rapid transition from ice covered CO2–rich waters to a biologically mediated CO2 sink in the eastern Weddell Gyre
rapid transition ice covered CO2–rich waters CO2 sink
2010/1/18
Circumpolar Deep Water (CDW), locally called Warm Deep Water (WDW), enters the Weddell Gyre in the southeast, roughly at 25° E to 30° E. In December 2002 and January 2003 we studied the effect of entr...
Estimation of the Greenland ice sheet surface mass balance for the 20th and 21st centuries
Estimation Greenland ice sheet surface mass balance 21st centuries
2010/2/4
Results from a regional climate simulation (1970–2006) over the Greenland ice sheet (GrIS) reveals that more than 97% of the interannual variability of the modelled Surface Mass Balance (SMB) can be e...
Benchmark experiments for higher-order and full-Stokes ice sheet models (ISMIP–HOM)
Benchmark experiments higher-order full-Stokes ice sheet models
2010/2/4
We present the results of the first ice sheet model intercomparison project for higher-order and full-Stokes ice sheet models. These models are compared and verified in a series of six experiments of ...
Analytical solutions for the surface response to small amplitude perturbations in boundary data in the shallow-ice-stream approximation
Analytical solutions surface response amplitude perturbations boundary data
2010/2/4
New analytical solutions describing the effects of small-amplitude perturbations in boundary data on flow in the shallow-ice-stream approximation are presented. These solutions are valid for a non-lin...
Assessing lahars from ice-capped volcanoes using ASTER satellite data, the SRTM DTM and two different flow models: case study on Iztaccíhuatl (Central Mexico)
ice-capped volcanoes ASTER satellite data the SRTM DTM and two different flow models Iztaccíhuatl (Central Mexico)
2009/12/30
In this study, analysis of the glaciers on Iztaccíhuatl shows a dramatic retreat during the last 150 years: the glaciated area in 2007 corresponds to only 4% of the one in 1850 AD and the glaciers are...
High-resolution ice nucleation spectra of sea-ice bacteria:implications for cloud formation and life in frozen environments
High-resolution ice nucleation spectra sea-ice bacteria cloud formation
2010/1/15
Even though studies of Arctic ice forming particles suggest that a bacterial or viral source derived from open leads could be important for ice formation in Arctic clouds (Bigg and Leck, 2001), the ic...