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Journal of Geophysical Research: Atmospheres

The atmosphere above remote ocean regions plays an important role in the global methanol budget.
Posted inResearch Spotlights

Improving the Global Budget for Atmospheric Methanol

by David Shultz 25 March 20213 December 2021

New aircraft survey data show that although atmospheric chemistry above remote ocean regions is a considerable source of methanol production, the ocean’s net methanol emission is minor.

Cloud droplets in turbulence (left) and cloud droplets in Earth’s atmosphere (right)
Posted inResearch Spotlights

Atmospheric Turbulence May Promote Cloud Droplet Formation

by Morgan Rehnberg 18 March 20217 March 2022

Turbulence causes local variations in relative humidity, which can push particles past a critical saturation threshold for droplet nucleation.

Maps of the northern (left) and southern (right) hemispheres showing temperature anomalies relative to the 1961–1990 mean for the month of August 2016 using an alternative gridding method
Posted inEditors' Highlights

New Land Surface Air Temperature Global Dataset

by Minghua Zhang 17 March 202115 March 2021

The fifth major update of land surface air temperature data from the Climatic Research Unit and the Met Office has extended the time series, included more stations, and used better processing methods.

Two charts comparing annual global average temperature anomaly series relative to 1961–1990 (top) and 1850–1900 (bottom)
Posted inEditors' Highlights

New Global Surface Temperature Dataset Spans 170 Years

by Minghua Zhang 8 March 20219 March 2021

HadCRUT5, the new version of the Met Office Hadley Centre/Climatic Research Unit global surface temperature dataset from 1850 to 2018, has extended and improved the previous temperature record.

Aerial view of a wildfire smoke plume rising from a mountainous landscape
Posted inResearch Spotlights

Seeding Ice Clouds with Wildfire Emissions

by David Shultz 26 February 202110 January 2022

Wildfires create airborne plumes of organic and inorganic matter as they burn. These particles can nucleate cloud-forming ice crystals and affect cloud dynamics, precipitation, and climate.

Map of south and southeast Asia showing the near-surface origins of ‘fast’ airmass trajectories connecting the surface and the upper troposphere/lower stratosphere
Posted inEditors' Highlights

Measurements of Ozone-Depleting Chemicals in the Asian Monsoon

by William J. Randel 10 February 20214 February 2021

New high-altitude aircraft observations identify unexpected high levels of halogen-containing species entering the stratosphere above the summertime Asian monsoon.

Chart showing composition of reactive nitrogen species in wildfire smoke at different locations
Posted inEditors' Highlights

Deciphering Reactive Nitrogen Emissions from Wildfire Smoke

by B. McDonald 5 February 202110 January 2022

In-situ data gathered from an aircraft flying over 23 western US wildfires in 2018 reveal the importance of reduced nitrogen, shedding insights on ozone and aerosol formation from wildfires.

Satellite images of Puerto Rico showing changes to land cover type before and after Hurricane Maria in 2017.
Posted inEditors' Highlights

Devastation of Hurricane Maria to Puerto Rican Landscape

by C. Zhang 1 February 202115 March 2022

The destructive winds and rain of Hurricane Maria in 2017 caused a dramatic transformation to Puerto Rico’s landscape and altered the characteristics of land-air interaction.

Plot showing pattern correlations between models and observations for simulated annual mean climatology over the period 1980–1999 for five climate variables
Posted inEditors' Highlights

Climate Modeling Progress in the Past 15 Years

by Minghua Zhang 27 January 202112 January 2022

An assessment and comparison of the performances of climate models participating in three phases of the Coupled Model Intercomparison Project (CMIP3, CMIP5 and CMIP6).

Pair of images depicting Kelvin-Helmholtz instabilities disturbed by background atmospheric gravity waves in the atmosphere (left) and in a simulation (right)
Posted inResearch Spotlights

Newly Identified Instabilities Enhance Atmospheric Turbulence

by Morgan Rehnberg 12 January 202114 February 2022

New high-resolution imaging and modeling reveal the first evidence of enhanced turbulence due to gravity wave modulation of Kelvin-Helmholtz instabilities.

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From AGU Journals

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Reviews of Geophysics
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“Emission of trace gases and aerosols from biomass burning”
By M. O. Andreae, P. Merlet

HOT ARTICLE
Geophysical Research Letters
“Relating Slip Behavior to Off-Fault Deformation Using Physical Models”
By Emily O. Ross et al.


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