Sciences and Exploration Directorate

Ashley D Greeley

(RESEARCH AST, FIELDS AND PARTICLES)

Ashley D Greeley's Contact Card & Information.
Email: ashley.greeley@nasa.gov
Phone: 301.286.9054
Org Code: 672
Address:
NASA/GSFC
Mail Code 672
Greenbelt, MD 20771
Employer:
NASA

Brief Bio


Ashley Greeley is a research scientist in the Energetic Particles Lab (code 672). In this role, she splits her time between research topics and instrument development. She is the instrument lead on several CubeSat missions analyzing electrons, protons, and ions in low Earth orbit (LEO), interplanetary space, and lunar orbit. She develops future missions using Geant4, a Monte Carlo simulation package. Her current research interests include electron pitch angle distributions in the Earth's radiation belts, wave-particle interactions, and particle precipitation into the atmosphere.


She graduated with distinction from Duke University in 2011 with a B.S. in physics and minor in theater studies. She studied neutrinos with the Super Kamiokande collaboration under the guidance of K. Scholberg and C. Walter. She worked for a year at the Duke Psychiatry Department running clinical trials for schizophrenia and fibromyalgia research. She then came to Goddard as an intern, where she has worked in various capacities since.


During her internship, she worked on the design of a new CubeSat, the Miniaturized Electron pRoton Telescope (MERiT) instrument o the Compact Radiation bElt Explorer (CeREs). In the year after, she stayed on the project as a data scientist before applying to grad school at the nearby Catholic University of America. During this time, she worked on CeREs from its initial design through launch in 2018. She also worked on a MERiT design for the CubeSat to Study Solar Particles (CuSP) mission, launched in 2022. She has started work on a particle instrument for the Geospace Dynamics Constellation (GDC).


Ashley graduated with her PhD at the end of 2019, and started a NASA Postdoctoral Program (NPP) fellowship. In 2021, she started a research scientist position at the Catholic University of America working at Goddard. In 2022, she started a research scientist civil servant position at Goddard.

Research Interests


Positions/Employment


Research Heliophysicist

NASA GSFC - Greenbelt, MD

September 2022 - Present


Research Scientist

The Catholic University of America - NASA GSFC

October 2021 - September 2022


NASA Postdoctoral Program Research Fellow

USRA - NASA GSFC

January 2020 - September 2021


Graduate Student Research Assistant

The Catholic University of America - NASA GSFC

September 2013 - December 2019


Data Scientist

The Catholic University of America - NASA GSFC

August 2012 - August 2013


NASA Intern

The Catholic University of America - NASA GSFC

June 2012 - July 2012

Education


The Catholic University of America, PhD

Duke University, BS

Publications


Refereed

2022. "EMIC‐Wave Driven Electron Precipitation observed by CALET on the International Space Station." Geophysical Research Letters 49 (6): e2021GL097529 [10.1029/2021gl097529] [Journal Article/Letter]

2021. "Prompt Response of the Dayside Magnetosphere to Discrete Structures Within the Sheath Region of a Coronal Mass Ejection." Geophysical Research Letters 48 (11): e2021GL092700 [10.1029/2021gl092700] [Journal Article/Letter]

2021. "Evolution of Pitch Angle Distributions of Relativistic Electrons During Geomagnetic Storms: Van Allen Probes Observations." Journal of Geophysical Research: Space Physics 126 (2): [10.1029/2020ja028335] [Journal Article/Letter]

2020. "Statistical Properties of Electron Curtain Precipitation Estimated With AeroCube‐6." Journal of Geophysical Research: Space Physics 125 (12): [10.1029/2020ja028462] [Journal Article/Letter]

2019. "The MERiT Onboard the CeREs: A Novel Instrument to Study Energetic Particles in the Earth's Radiation Belts." Journal of Geophysical Research: Space Physics 124 (7): 5734-5760 [10.1029/2018ja026304] [Journal Article/Letter]

2019. "Quantifying the Contribution of Microbursts to Global Electron Loss in the Radiation Belts." Journal of Geophysical Research: Space Physics 124 (2): 1111-1124 [10.1029/2018ja026368] [Journal Article/Letter]

2018. "On the cause of two prompt shock-induced relativistic electron depletion events." Journal of Atmospheric and Solar-Terrestrial Physics 177 208-217 [10.1016/j.jastp.2017.08.017] [Journal Article/Letter]

2017. "SAMPEX observations of the South Atlantic anomaly secular drift during solar cycles 22-24." Space Weather 15 (1): 44-52 [10.1002/2016sw001525] [Journal Article/Letter]

2016. "Prompt injections of highly relativistic electrons induced by interplanetary shocks: A statistical study of Van Allen Probes observations." Geophysical Research Letters 43 (24): [10.1002/2016gl071628] [Journal Article/Letter]

2015. "Relativistic electron response to the combined magnetospheric impact of a coronal mass ejection overlapping with a high-speed stream: Van Allen Probes observations." Journal of Geophysical Research: Space Physics 120 (9): 7629-7641 [10.1002/2015ja021395] [Journal Article/Letter]