Issues and options for a Martian calendar

Gangale, Thomas; Dudley-Rowley, Marilyn

doi:10.1016/j.pss.2005.07.012

Cited by 5 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A correction to resolve this problem was implemented for ModelE2, Earth paleoclimate studies (Chandler et al 2013), and is also used by ROCKE-3D. (Allison 1997;Allison & McEwen 2000;Gangale 1986Gangale , 1997Gangale & Dudley-Rowley 2005). Here the priority is to simplify interpretation of seasonal and diurnal diagnostics, and is similar to the approach in Richardson et al (2007).…”

Section: Dynamic Coupled Oceanmentioning

confidence: 99%

“…The other priority was for the new calendar to preserve, as much as possible, correspondence between planetary seasons, months, and days with that of Earth in terms of basic orbital characteristics. Note that other communities have designed planetary calendars (primarily for Mars) with quite different priorities such as preserving the number of days per month and the number of seconds per hour (Allison 1997;Allison & McEwen 2000;Gangale 1986Gangale , 1997Gangale & Dudley-Rowley 2005). Here the priority is to simplify interpretation of seasonal and diurnal diagnostics, and is similar to the approach in Richardson et al (2007).…”

Section: Calendar Changes For Modeling Other Planetsmentioning

confidence: 99%

See 1 more Smart Citation

Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics (ROCKE-3D) 1.0: A General Circulation Model for Simulating the Climates of Rocky Planets

Way

Aleinov

Amundsen

et al. 2017

ApJS

143

141

View full text Add to dashboard Cite

Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics(ROCKE-3D) is a 3-Dimensional General Circulation Model (GCM) developed at the NASA Goddard Institute for Space Studies for the modeling of atmospheres of Solar System and exoplanetary terrestrial planets. Its parent model, known as ModelE2 (Schmidt et al. 2014), is used to simulate modern and 21st Century Earth and near-term paleo-Earth climates. ROCKE-3D is an ongoing effort to expand the capabilities of ModelE2 to handle a broader range of atmospheric conditions including higher and lower atmospheric pressures, more diverse chemistries and compositions, larger and smaller planet radii and gravity, different rotation rates (slowly rotating to more rapidly rotating than modern Earth, including synchronous rotation), diverse ocean and land distributions and topographies, and potential basic biosphere functions. The first aim of ROCKE-3D is to model planetary atmospheres on terrestrial worlds within the Solar System such as paleo-Earth, modern and paleo-Mars, paleo-Venus, and Saturn's moon Titan. By validating the model for a broad range of temperatures, pressures, and atmospheric constituents we can then expand its capabilities further to 2 those exoplanetary rocky worlds that have been discovered in the past and those to be discovered in the future. We discuss the current and near-future capabilities of ROCKE-3D as a community model for studying planetary and exoplanetary atmospheres.3

show abstract

Section: Dynamic Coupled Oceanmentioning

confidence: 99%

Section: Calendar Changes For Modeling Other Planetsmentioning

confidence: 99%

Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics (ROCKE-3D) 1.0: A General Circulation Model for Simulating the Climates of Rocky Planets

Way

Aleinov

Amundsen

et al. 2017

ApJS

143

141

View full text Add to dashboard Cite

show abstract

“…Figure 1 illustrates the relationship between the Mars Years and TES Mapping Years. It should be noted that some controversy surrounds the assignment of Mars Years [ Suran , 1997; Gangale and Dudley‐Rowley , 2005]. In this paper, we adopt the timekeeping standard put forth by Clancy et al [2000] and Smith [2004], which designates L S = 000 of Mars Year 0 on 11 April 1955.…”

Section: Introductionmentioning

confidence: 99%

Vertical dust mixing and the interannual variations in the Mars thermosphere

2007

View full text Add to dashboard Cite

[1] Mars winter polar warming is a phenomenon of the lower thermosphere temperatures and densities that is well documented by in situ accelerometer data taken during spacecraft aerobraking maneuvers. Previous work by Bougher et al. (2006) simulates two specific time periods, corresponding to existing aerobraking data sets, and confirms the existence of winter polar warming structures in the Martian upper atmosphere, using the coupled Mars General Circulation Model-Mars Thermosphere General Circulation Model (MGCM-MTGCM). The present work investigates the underlying mechanisms that drive winter polar warming in three major studies: (1) a systematic analysis of vertical dust mixing in the lower atmosphere and its impact upon the dynamics of the lower thermosphere (100-130 km), (2) an interannual investigation utilizing 3 years of lower atmosphere infrared (IR) dust optical depth data acquired by the Thermal Emission Spectrometer (TES) instrument on board Mars Global Surveyor (MGS), and finally (3) a brief study of the MTGCM's response to variations in upward propagating waves and tides from the lower atmosphere. From the first study, we find that the vertical dust mixing greatly modifies the simulated winter polar warming features in the MTGCM's thermosphere at both solstice seasons. Furthermore, this sensitivity study confirms that an interhemispheric Hadley circulation and the concomitant adiabatic heating rates are the primary causes for these winter polar warming structures. From the second study, we find that as revealed in the lower atmosphere by Liu et al. (2003), the polar lower thermosphere exhibits a high degree of variability at L S = 270, with reduced yet significant variability at L S = 090. Finally, the third numerical experiment indicates, as was found in the lower atmosphere by Wilson (1997), that upward propagating waves and tides allow meridional flows to access the thermosphere's winter polar latitudes. This last investigation also indicates that the Hadley circulation responsible for thermospheric winter polar warming originates in the lower atmosphere and extends high into the upper atmosphere. In summary, these new efforts establish a baseline numerical study upon which more comprehensive model-to-data comparisons may be conducted for the Martian thermosphere.

show abstract

The International Atlas of Mars Exploration

Stooke

2012

View full text Add to dashboard Cite

Issues and options for a Martian calendar

Cited by 5 publications

References 14 publications

Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics (ROCKE-3D) 1.0: A General Circulation Model for Simulating the Climates of Rocky Planets

Resolving Orbital and Climate Keys of Earth and Extraterrestrial Environments with Dynamics (ROCKE-3D) 1.0: A General Circulation Model for Simulating the Climates of Rocky Planets

Vertical dust mixing and the interannual variations in the Mars thermosphere

The International Atlas of Mars Exploration

Contact Info

Product

Resources

About