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Massive Antarctic Volcanic Eruptions Linked to Abrupt Southern Hemisphere Climate Changes Near the End of the Last Ice Age（图）
Massive Antarctic Volcanic Eruptions Southern Hemisphere Climate Changes Last Ice Age
2017/9/20
New findings published today in the Proceedings of the National Academy of Sciences of the United States of America (PNAS) by Desert Research Institute (DRI) Professor Joseph R. McConnell, Ph.D., and ...
New study: Iceberg influx into Atlantic during ice age raised tropical methane emissions
Iceberg influx into Atlantic ice age tropical methane emissions
2015/6/18
A new study shows how huge influxes of fresh water into the North Atlantic Ocean from icebergs calving off North America during the last ice age had an unexpected effect – they increased the productio...
Synchronization of North Atlantic, North Pacific preceded abrupt warming, end of ice age
Synchronization of North Atlantic North Pacific preceded abrupt warming end of ice age
2014/8/14
Scientists have long been concerned that global warming may push Earth’s climate system across a “tipping point,” where rapid melting of ice and further warming may become irreversible – a hotly debat...
Assessing the Relationship between Air Mass Age and Summer Ozone Episodes Based on Photochemical Indices
Ozone Aerosol Aging Backward trajectory Conversion ratio Photochemical index
2016/3/25
Although pollutant sources are usually in urban and industrialized areas, poor air quality is
frequently encountered in downwind rural areas. This study utilized a tethered balloon to measure the
po...
Transport mechanisms for synoptic, seasonal and interannual SF6 variations and“age”of air in troposphere
Transport mechanisms synoptic seasonal interannual SF6 variations troposphere
2009/3/13
We use an atmospheric general circulation model (AGCM) driven chemistry-transport model (ACTM) to simulate the evolution of sulfur hexafluoride (SF6) in the troposphere. The model results are compared...
Model calculations of the age of firn air across the Antarctic continent
Model calculations firn air Antarctic continent
2009/3/4
The age of firn air in Antarctica at pore close-off depth is only known for a few specific sites where firn air has been sampled for analyses. We present a model that calculates the age of firn air at...
Stratospheric age of air computed with trajectories based on various 3D-Var and 4D-Var data sets
Stratospheric age trajectories 3D-Var 4D-Var
2009/1/23
The age of stratospheric air is computed with a trajectory model, using ECMWF ERA-40 3D-Var and operational 4D-Var winds. Analysis as well as forecast data are used. In the latter case successive fore...
Social vulnerability to climate in the “Little Ice Age”：an example from Central Europe in the early 1770s
climate Little Ice Age Central Europe
2008/11/11
The paper is oriented on social vulnerability to climate in Switzerland and in the Czech Lands during the early 1770s. Documentary sources of climate related to man-made archives are discussed.
Social vulnerability to climate in the “Little Ice Age”：an example from Central Europe in the early 1770s
Little Ice Age Little Ice Age-type Impacts Central Europe
2008/11/11
The paper is oriented on social vulnerability to climate in Switzerland and in the Czech Lands during the early 1770s. Documentary sources of climate related to man-made archives are discussed. Method...
New constraints on the gas age-ice age difference along the EPICA ice cores, 0–50 kyr
age-ice EPICA ice cores
2008/11/5
Gas is trapped in polar ice sheets at ~50–120 m below the surface and is therefore younger than the surrounding ice. Firn densification models are used to evaluate this ice age-gas age difference (Δag...
Climatic Conditions for modelling the Northern Hemisphere ice sheets throughout the ice age cycle
Northern Hemisphere ice sheet ice age cycle
2008/11/5
The ice sheet-climate interaction as well as the climatic response to orbital parameters and atmospheric CO2 concentration are examined in order to drive an ice sheet model throughout an ice age cycle...
Global distribution of mean age of stratospheric air from MIPAS SF6 measurementsGlobal
distribution mean age stratospheric air MIPAS SF6
2008/10/29
Global distributions of profiles of sulphur hexafluoride (SF6) have been retrieved from limb emission spectra recorded by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on Envis...