AGU - American Geophysical Union

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About AGU
Career Development
Honors & Funding
Meetings & Events
Publications & News
Policy & Outreach

Who We Are

Programs & Initiatives

Advance your career and connect with peers

Find Your Community

Connect by science, interest and identity

AGU Net Zero Headquarters

Visit AGU’s award-winning HQ in D.C.

Leadership & Governance

Volunteers shaping AGU and the future of science

AGU Sections

Connect with colleagues in your discipline

Jobs at AGU

Join AGU’s team to advance science

Ethics, Diversity & Inclusive Science

Promoting an inclusive scientific culture

Membership Directory

Find members by section, region or expertise

AGU Resource Center

Explore AGU programs, insights and tools

Connect with the global AGU community.

Students

Student Programs

Launch your career with a supportive community

Leadership Opportunities

Sign up for leadership and volunteer updates

Awards & Funding

Apply for scholarships and fellowships

Educators

University & Faculty Programs

Network and share best practices in education

K-12

Explore Bright STaRS program and travel grants

Career Advancement

Career Guidance

Chart your course with expert advice

Opportunities by Career Stage

Programs and support for every career level

Professional Development

Tools and resources to boost your career

Fellowships & Cohort Programs

Build in-depth skills alongside peers

Join as a mentor or mentee for Mentoring365 LIVE

AGU Honors

Union Medals, Awards & Prizes

Recognizing top achievements in science

Union Fellows Program

Recognizing excellence in research

Section Awards & Lectures

Celebrating section-specific achievements

Student Awards

Rewarding scientific excellence in students

Science Policy & Communication Awards

Awarding excellence in science outreach

View past recipients

AGU Funding

Scholarships

Investing in science’s future leaders

Travel Grants

Support travel for AGU meetings

Research Grants

Funding new discoveries and breakthroughs

AGU Meetings

AGU Annual Meeting

Join AGU24 in Washington DC this December

Ocean Sciences

Join Ocean experts in Glasgow 2026

Chapmans

Specialized meetings for science insights

More Meetings

See what’s next on AGU’s calendar

AbSciCon

Uncover new insights in astrobiology

WaterSciCon

Innovations in hydrology

Exhibits and Sponsorship Opportunities

Elevate your visibility in the geosciences

Register for AGU24

Resources

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Track key dates for AGU events

Book the AGU Conference Center

Host your event at AGU Headquarters

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Online sessions for science insights

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Explore 24 high-impact, peer-reviewed journals

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Publish with AGU

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ESS Open Archive

Search Earth and space science preprints

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Explore AGU data guidelines for researchers

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Eos

AGU’s award-winning science news magazine

Stay in the Know

Sign up for AGU updates and news

Press Releases & Media Resources

Visit AGU's newsroom for science updates

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Get involved in AGU’s policy initiatives

Science Policy Resources

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Grassroots Action

Mobilize local voices for policy impact

Outreach

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Develop skills to share your science

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Connect science to local community priorities

U.S. Government Outreach

Learn to navigate U.S. science policy

Global Outreach

Collaborate globally for sustainable solutions

AGU Thought Leadership

Open Science

Expanding participation and access to science

Climate & Sustainability

Science for a thriving, sustainable future

Ethical, Diverse & Just Science

Championing ethics and equity in science

Inclusive Collaboration

Fostering an inclusive science culture

AGU Members
Mei-Ching Hannah Fok

Member Since 1989

Mei-Ching Hannah Fok

Astrophysicist, NASA Goddard Space Flight Center

Professional Experience

NASA Goddard Space Flight Center

Astrophysicist

2001 - Present

Education

Doctorate

1993

University of Michigan Ann Arbor

Doctorate

Honors & Awards

James Van Allen Lecture

Received December 2021

Video

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Union Fellow

Received December 2019

Citation

For her profound advancements in understanding the coupled geospace system during magnetic storms.

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Publications

The Influence of the Inner Magnetospheric Electric Field on Plasma Sheet Access

This study presents observations of the large‐scale electric field and H+ fluxes over the entire Van Allen Probes mission duration. These obs...

November 07, 2024

SubAuroral Red Arcs Generated by Inner Magnetospheric Heat F...

September 01, 2024

Understanding Quiet and Storm Time EMIC Waves—Van Allen Prob...

August 09, 2023

Stormtime Ring Current Heating of the Ionosphere and Plasmas...

December 31, 2022

What Is Unusual About the Third Largest Geomagnetic Storm of...

August 22, 2022

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AGU Abstracts

Impact of recirculated and heated protons originated from plasmasphere on ring currents

AGU 2024

spa-magnetospheric physics | 13 december 2024

Suk-Bin Kang, Mei-Ching H. Fok, Alex Glocer, Crist...

The plasmasphere consisting of a few eV ions and electrons plays important roles in the magnetospheric dynamics. For example, the plasmasphere control...

Assessment of CIMI Electron Precipitation Performances During Two Geomagnetic Storms Alongside DMSP Data

AGU 2024

spa-aeronomy | 13 december 2024

DIBYENDU SUR, Mei-Ching H. Fok, Natalia Buzulukova...

This paper reports performances of the Comprehensive Inner Magnetosphere Ionosphere (CIMI) model regarding its prediction capabilities of auroral elec...

The Roles of Precipitation Loss in Ring Current Recovery

AGU 2024

spa-magnetospheric physics | 13 december 2024

Mei-Ching H. Fok, Kai Chen, Cristian Ferradas, Cri...

The enhancement and decay of ring current (~ 1 < E < 500 keV) ion and electron fluxes during geomagnetic active periods cause the development of...

View All Abstracts

Volunteer Experience

2021 - 2022

Member

Union Fellows Committee

Check out all of Mei-Ching Hannah Fok’s AGU Research!

View All Research Now