Sciences and Exploration Directorate

Ari Koeppel


Ari Koeppel's Contact Card & Information.
Org Code: 693
Mail Code 693
Greenbelt, MD 20771

Brief Bio

Dr. Ari Koeppel's expertise lies in thermodynamic modeling applied to problems in land surface processes, remote sensing, geology, and near-surface atmospheric science, on Mars and Earth. At the interface between sky and ground, rocks record stories of past climates and the exchanges of life; analyzing surface materials allows us to read that environmental record and understand the history of and possibilities for life in the universe. Ari is currently working with Perseverance Rover and satellite data to analyze surface energy flux on Mars. He is also using Mars analog data from Earth and building models to study permafrost processes and the modern water cycle on Mars.

Current Projects

Linking Surface Temperatures to Past Environments on Mars

Improving Mars Thermophysical Modeling by Pairing High Cadence Rover and Orbital Data

Enhancing Tools to Monitor Frost Thaw on Earth and Mars

Remote Spectroscopic Signatures of Soil Moisture in Arid Environments

Identifying Evidence of Wet-Based Glaciation on Mars


  • Ph.D. Astronomy and Planetary Science, Northern Arizona University (NAU), 2023
  • M.S. Geology, The City College of New York (CCNY), 2018
  • B.A. Engineering Physics, Dartmouth College, 2015

Selected Publications


2023. "Bedding Scale Correlation on Mars in Western Arabia Terra." Journal of Geophysical Research: Planets 128 (6): [10.1029/2023je007776] [Journal Article/Letter]

2021. "Characteristics, Origins, and Biosignature Preservation Potential of Carbonate‐Bearing Rocks Within and Outside of Jezero Crater." Journal of Geophysical Research: Planets 126 (11): [10.1029/2021je006898] [Journal Article/Letter]

2021. "A fragile record of fleeting water on Mars." Geology 50 (2): 152-157 [10.1130/g49285.1] [Journal Article/Letter]

2020. "Mars Extant Life: What's Next? Conference Report." Astrobiology 20 (6): ast.2020.2237 [Full Text] [10.1089/ast.2020.2237] [Journal Article/Letter]

2020. "Differentiation in impact melt sheets as a mechanism to produce evolved magmas on Mars." Icarus 335 113422 [10.1016/j.icarus.2019.113422] [Journal Article/Letter]

2015. "DISCOVERY OF AN APPARENT HIGH LATITUDE GALACTIC SUPERNOVA REMNANT." The Astrophysical Journal 812 (1): 37 [10.1088/0004-637x/812/1/37] [Journal Article/Letter]