M. A. Mischna
YOU?
Author Swipe
View article: In situ, Surface-deployed Distributed Instruments for Planetary Science: Scientific Opportunities and Technology Feasibility
In situ, Surface-deployed Distributed Instruments for Planetary Science: Scientific Opportunities and Technology Feasibility Open
In this paper, we assess the scientific promise and technology feasibility of in situ distributed instruments for planetary surface and atmospheric science. A distributed instrument is an instrument designed to collect spatially and tempor…
View article: Why Are Mountaintops Cold? The Transition of Surface Lapse Rate on Dry Planets
Why Are Mountaintops Cold? The Transition of Surface Lapse Rate on Dry Planets Open
Understanding surface temperature is important for habitability. Recent work on Mars has found that the dependence of surface temperature on elevation (surface lapse rate) converges to zero in the limit of a thin CO 2 atmosphere. However, …
View article: Why are Mountaintops Cold? The Transition of Surface Lapse Rate on Dry Planets
Why are Mountaintops Cold? The Transition of Surface Lapse Rate on Dry Planets Open
Understanding surface temperature is important for habitability. Recent work on Mars has found that the dependence of surface temperature on elevation (surface lapse rate) converges to zero in the limit of a thin CO2 atmosphere. However, t…
View article: Why are Mountaintops Cold? The Transition of Surface Lapse Rate on Dry Planets
Why are Mountaintops Cold? The Transition of Surface Lapse Rate on Dry Planets Open
Understanding surface temperature is important for habitability. Recent work on Mars has found that the dependence of surface temperature on elevation (surface lapse rate) converges to zero in the limit of a thin $\mathrm{CO_2}$ atmosphere…
View article: Short-term variation in Mars atmospheric methane concentrations driven by barometric pumping
Short-term variation in Mars atmospheric methane concentrations driven by barometric pumping Open
Measurements of atmospheric methane by the Curiosity rover's SAM-TLS instrument are providing evidence of seasonality and diurnal variation in concentration. Given methane's short atmospheric lifetime relative to geological timescales, its…
View article: Winds at the Mars 2020 Landing Site. 2. Wind Variability and Turbulence
Winds at the Mars 2020 Landing Site. 2. Wind Variability and Turbulence Open
Wind speeds measured by the Mars 2020 Perseverance rover in Jezero crater were fitted as a Weibull distribution. InSight wind data acquired in Elysium Planitia were also used to contextualize observations. Jezero winds were found to be muc…
View article: Winds at the Mars 2020 Landing Site: 1. Near‐Surface Wind Patterns at Jezero Crater
Winds at the Mars 2020 Landing Site: 1. Near‐Surface Wind Patterns at Jezero Crater Open
This is the first part of a two‐part paper. NASA's Mars 2020 Perseverance rover measured winds on the Jezero crater floor close to the delta of an ancient river. A mostly repeatable diurnal cycle was observed and presented two regimes: (a)…
View article: Why are Mountaintops Cold? The Decorrelation of Surface Temperature and Elevation Due to the Greenhouse Effect Weakening on Early Mars
Why are Mountaintops Cold? The Decorrelation of Surface Temperature and Elevation Due to the Greenhouse Effect Weakening on Early Mars Open
\justifying The wet-to-dry transition of Mars is recorded by a changing distribution of rivers, which was interpreted as the result of a decorrelation between surface temperature and elevation with a thinner atmosphere. Here we use a clima…
View article: Pre- and Post-entry, Descent and Landing Assessment of the Martian Atmosphere for the Mars 2020 Rover
Pre- and Post-entry, Descent and Landing Assessment of the Martian Atmosphere for the Mars 2020 Rover Open
This review provides an analysis of activities undertaken by the Mars 2020 Council of Atmospheres (CoA) in support of the entry, descent, and landing (EDL) of the Mars 2020 rover Perseverance in Jezero crater, Mars. The activities of the C…
View article: Changing spatial distribution of water flow charts major change in Mars’s greenhouse effect
Changing spatial distribution of water flow charts major change in Mars’s greenhouse effect Open
Early Mars had rivers, but the cause of Mars’s wet-to-dry transition remains unknown. Past climate on Mars can be probed using the spatial distribution of climate-sensitive landforms. We analyzed global databases of water-worked landforms …
View article: The ebb of rivers – the paleo-river elevation transition due to the decline of greenhouse effect on early Mars
The ebb of rivers – the paleo-river elevation transition due to the decline of greenhouse effect on early Mars Open
Earth and Space Science Open Archive PosterOpen AccessYou are viewing the latest version by default [v1]The ebb of rivers – the paleo-river elevation transition due to the decline of greenhouse effect on early MarsAuthorsBowenFaniDEdwinKit…
View article: Thermal Forcing of the Nocturnal Near Surface Environment by Martian Water Ice Clouds
Thermal Forcing of the Nocturnal Near Surface Environment by Martian Water Ice Clouds Open
We explore the potential role of clouds in moderating the nighttime temperature within Gale crater, as observed by the Rover Environmental Monitoring Station (REMS) instrument suite aboard the Curiosity rover. Just prior to aphelion, the d…
View article: Mars Methane Sources in Northwestern Gale Crater Inferred From Back Trajectory Modeling
Mars Methane Sources in Northwestern Gale Crater Inferred From Back Trajectory Modeling Open
During its first seven years of operation, the Sample Analysis at Mars Tunable Laser Spectrometer (TLS) on board the Curiosity rover has detected seven methane spikes above a low background abundance in Gale crater. The methane spikes are …
View article: MOSAIC: A Satellite Constellation to Enable Groundbreaking Mars Climate System Science and Prepare for Human Exploration
MOSAIC: A Satellite Constellation to Enable Groundbreaking Mars Climate System Science and Prepare for Human Exploration Open
The Martian climate system has been revealed to rival the complexity of Earth’s. Over the last 20 yr, a fragmented and incomplete picture has emerged of its structure and variability; we remain largely ignorant of many of the physical proc…
View article: Mars Methane Sources in Northwestern Gale Crater Inferred from Back-Trajectory Modeling
Mars Methane Sources in Northwestern Gale Crater Inferred from Back-Trajectory Modeling Open
During its five years of operation, the Sample Analysis at Mars (SAM) Tunable Laser Spectrometer (TLS) on board the Curiosity rover has detected six methane spikes above a low background abundance in Gale crater. The methane spikes are lik…
View article: Warm early Mars surface enabled by high-altitude water ice clouds
Warm early Mars surface enabled by high-altitude water ice clouds Open
Significance Mars is cold today but once had lakes. We evaluated the water ice cloud greenhouse hypothesis for warming early Mars. Our results reconcile previous discrepant results by showing that the cloud greenhouse provides strong warmi…
View article: Toward More Realistic Simulation and Prediction of Dust Storms on Mars
Toward More Realistic Simulation and Prediction of Dust Storms on Mars Open
Written by: Claire E. Newman (Aeolis Res.) Tanguy Bertrand (NASA Ames) Joseph Battalio (Yale Univ.) Mackenzie Day (UCLA) Manuel de la Torre Juarez (JPL) Meredith K. Elrod (NASA GSFC) Francesca Esposito (INAF-OAC) Lori Fenton (SETI Inst.) C…
View article: Measuring Mars Atmospheric Winds from Orbit
Measuring Mars Atmospheric Winds from Orbit Open
Key Point
View article: Terrestrial Planets Comparative Climatology (TPCC) mission concept
Terrestrial Planets Comparative Climatology (TPCC) mission concept Open
The authors and co-signers of the Terrestrial Planets Comparative Climatology (TPCC) mission concept white paper advocate that planetary science in the next decade would greatly benefit from comparatively studying the fundamental behavior …
View article: Distributed Instruments for Planetary Surface Science
Distributed Instruments for Planetary Surface Science Open
A distributed instrument is an instrument designed to collect spatially and temporally correlated data from many networked, geographically distributed point sensors.A distributed instrument is more than the sum of its sensors: by strategic…
View article: An Urgently Needed Repository for Planetary Atmospheric Model Output
An Urgently Needed Repository for Planetary Atmospheric Model Output Open
Whitepaper #505 submitted to the Planetary Science and Astrobiology Decadal Survey 2023-2032. Topics: other: Repository for model output; other science themes: Processes on planetary bodies with atmospheres; theory, computation, and modeli…
View article: Expanding Mars Science Return in the MSR Era: The Need for, Capabilities of, and Challenges Associated with Small Mars Science Missions
Expanding Mars Science Return in the MSR Era: The Need for, Capabilities of, and Challenges Associated with Small Mars Science Missions Open
This paper advocates for NASA to create and fund a class of small Mars missions ($125M -$250M), along with a non-instrument technology maturation program, to complement the Mars Sample Return (MSR) program.Arguments are provided that witho…
View article: Deep Trek: Mission Concepts for Exploring Subsurface Habitability & Life on Mars — A Window into Subsurface Life in the Solar System
Deep Trek: Mission Concepts for Exploring Subsurface Habitability & Life on Mars — A Window into Subsurface Life in the Solar System Open
Charles D. Edwards (Jet Propulsion Laboratory, California Institute of Technology). Co-Authors: 1. Vlada Stamenkovic Jet Propulsion Laboratory, California Institute of Technology; 2. Penelope Boston NASA Ames; 3. Kennda Lynch LPI/USRA … et…
View article: Mars' Subsurface Environment: Where to Search for Groundwater?
Mars' Subsurface Environment: Where to Search for Groundwater? Open
While liquid water is not thermodynamically stable at the surface due to the low temperature and pressure conditions, liquid groundwater may still exist in the Martian subsurface [1, 2].In this study, we use fully dynamical 3D thermal evol…
View article: Measuring Mars Atmospheric Winds From Orbit
Measuring Mars Atmospheric Winds From Orbit Open
Wind is the process that connects Mars' climate system. Measurements of Mars atmospheric winds from orbit would dramatically advance our understanding of Mars and help prepare for human exploration of the Red Planet. Multiple instrument ca…