HAO

NCAR High Altitude Observatory

Dong Lin

Dr. Dong Lin is a Postdoctoral Fellow in the High Altitude Observatory of the National Center for Atmospheric Research specializing in magnetosphere-ionosphere coupling and space plasma instabilities.

Mk II Coronal Activity Monitor Instrument

Mission Lifetime: May 1969 through September 1978

WACCM-X Publication One of The Top Downloaded

Image of certificate of congratulations for JAMES article

The Journal of Advances in Modeling Earth Systems (JAMES), presented HAO authors, with a certificate of achievement for their WACCM-X paper receiving the most downloads in the 12 months following it's online publication.

Modulations of Ionospheric Solar & Lunar Migrating Tides during the 2009 Stratospheric Sudden Warming by using Global Ionosphere Specification

Image of graph depicting total electron content (TEC)
Wednesday, May 29, 2019

Large‐scale meteorological disturbances like sudden stratospheric warmings (SSWs) are often of interest for the investigation of a variety of mechanisms and processes that link different regions of the Earth's atmosphere across a wide range of altitudes and latitudes.

Mk I K-Coronameter Instrument

Mission Lifetime: 1956 to 1978

Space Weather: Big and Small, A Continuous Risk

Artistic rendering of the Sun and its atmosphere consist
Friday, May 10, 2019

"Space Weather" is the term used to describe the relentless barrage of particles that bathe the Earth and other planetary bodies of the solar system that originate in the steady evolution, and catastrophic breakdown, of magnetic structures on the Sun.

MHD simulation of prominence-cavity system

Images of 3D field lines
Thursday, May 9, 2019

We present magnetohydrodynamic simulation of the evolution from quasi-equilibrium to onset of eruption of a twisted, prominence-forming coronal magnetic flux rope underlying a corona streamer. The flux rope is built up by an imposed flux emergence at the lower boundary.

Whole Atmosphere Climate Change: Dependence on Solar Activity

Graph of global simulations
Thursday, May 9, 2019

Solomon and colleagues conducted global simulations of temperature change due to emissions of trace gases due to human activity, that extended from the surface, throughout the atmosphere, to space.

Maura Hagan is one of an historic number of women elected to the National Academy of Sciences

Photograph of Maura Hagan

Maura Hagan, HAO/NCAR emerita, is among 100 U.S. scientists and 25 international associates elected this year to the National Academy of Sciences, one of the world’s premier academic institutions.

Three-dimensional modeling of chromospheric spectral lines in a simulated active region

Simulated images of Ca II 8542 Å, Ca II K, Mg II k, and H
Friday, May 3, 2019

Recently, the radiative magnetohydrodynamic (R-MHD) code MURaM was extended to include the corona. The code was used to simulate a bipolar active region with additional parasitic flux emergence near one of the sunspots that produced a flare.

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