Volume 14 Issue 1, January 2021

Newly formed biogenic particles in the Himalaya increase free-tropospheric background aerosol concentration by a factor of up to two.

11-year solar cycles consistently occurred throughout the last thousand years, according to a synthesis of annually resolved tree ring radiocarbon records from central Europe.

Constraints on the denudation of the Southern Alps over the last glacial cycle indicate a nonlinear influence of climate on landscape evolution in glaciated areas, according to a beryllium isotope record measured from quartz in a sequence of Mediterranean turbidites.

Deforestation causes elevation-dependent warming over tropical mountain regions, according to high-resolution climate simulations.

Widespread, temporary wetlands in the American Midwest were likely a major cause of methane emission peaks during the last deglaciation, according to an analysis of regional pollen records combined with hydrological modelling.

Atmospheric Walker circulation results in a two-way interaction between decadal-scale sea surface temperature variability in the Atlantic and Pacific, according to pacemaker climate modelling experiments.

Lower than modern dissolved oxygen levels in the deep ocean during the Last Glacial Maximum were the result of greater disequilibrium between the atmosphere and ocean, according to proxy record-constrained Earth system modelling.

In contrast to present-day seafloor subsidence with age, there may have been Archaean seafloor shallowing and landmass exposure due to high internal heating in the mantle that halted subsidence, according to numerical models of mantle convection.