The MAVEN Mars orbiter has been gathering information on the Mars upper atmosphere, ionosphere, and solar and solar-wind interactions since its orbit insertion in September 2014. MAVEN's science goals are to understand processes driving the escape of atmospheric gases to space at the present epoch, and their variations with solar and local heliospheric conditions together with geographical and seasonal influences. This collection provides a selection of key results obtained up to the time of writing, including measurements of the overall geometry and variability of the Martian magnetosphere, upper atmosphere and ionosphere, and their responses to interplanetary coronal mass ejections and solar-energetic-particle influxes. The ultimate goal is to use these results to determine the integrated loss to space through time and its role in overall Mars atmosphere evolution.

See video highlights from NASA's Nov. 5th news briefing about the MAVEN mission findings here!

AGU Press Release: "MAVEN Mission Reveals Speed of Solar Wind Stripping in Martian Atmosphere"

First Results from the MAVEN Mission to Mars 

Overview Papers  on MAVEN Mission from Geophysical Research Letters free access icon

Papers on MAVEN Mission from Geophysical Research Letters

Papers on MAVEN Mission from Science

Complete Special Issue from Geophysical Research Letters: First Results from the MAVEN Mission to Mars


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Featured Special Collection

A Census of Atmospheric Variability from Seconds to Decades 

The atmosphere varies naturally on all length scales from millimeters to thousands of kilometers, and on all time scales from seconds to decades and longer.  This special collection of Geophysical Research Letters synthesizes and summarizes that variability through a phenomenological census.  The collection brings together some of the most influential and definitive papers to have been published in this journal in recent years.  The topics covered include turbulence on time scales of seconds and minutes, gravity waves on time scales of hours, weather systems on time scales of days, atmospheric blocking on time scales of weeks, the Madden–Julian Oscillation on time scales of months, the Quasi-Biennial Oscillation and El Niño–Southern Oscillation on time scales of years, and the North Atlantic, Arctic, Antarctic, Pacific Decadal, and Atlantic Multi-decadal Oscillations on time scales of decades.  The collection is accompanied by a Commentary article, which provides an authoritative, concise, and accessible point of reference for the most important modes of atmospheric variability.

A Census of Atmospheric Variability from Seconds to Decades