FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4220853768> ?p ?o ?g. }

• W4220853768 abstract "&lt;p&gt;The Mars Environmental Dynamics Analyzer (MEDA) is a meteorological station onboard Mars 2020 that characterizes the near surface atmosphere. Among other sensors MEDA has 5 Air Temperature Sensors (ATS) at two altitudes: 0.85m, in the front of the rover, and 1.45m around the Remote Sensing Mast, which are azimuthally distributed so that at least one sensor is located upwind. This configuration ensures that, for most environmental conditions, the thermal contamination caused by the rover can be set apart. Local air temperatures are read with a frequency of 1 or 2 Hz, and ATS data can characterize timescales from atmospheric turbulence to the daily temperature cycle and its seasonal evolution.&amp;#160;&lt;/p&gt;&lt;p&gt;Here we show the daily temperature cycle at Jezero and an analysis of its seasonal evolution over the first half Martian year of the mission from Spring (Ls=6) to Autumn Equinox (Ls=180). Simultaneous ATS and winds from MEDA&amp;#8217;s wind sensors show that, for most rover orientations, solar irradiation and winds clean environmental measurements are obtained at the 1.45m level. However, clean measurements at the 0.85m level are not always fully achieved, and a small residual thermal contamination is found at this level in many measurement sessions. The daily temperature cycle reflects the daily cycle of convection and turbulence. Strong and fast thermal oscillations start a few hours after sunrise, peak near noon, and collapse before sunset. The seasonal evolution shows a progressive increase of temperatures as summer advances, but less steep than what is retrieved at other Martian locations by previous missions. At the 0.85m level, changes in atmospheric temperatures with time-scales of a few sols correlate well with variations in local terrain properties. At the 1.45m level, similar temperature changes with timescales of a few sols are also found. We investigate whether these changes at 1.45m can be associated with changing atmospheric opacity due to dust and clouds, which are measured by other MEDA sensors and additional instruments in Perseverance. From the two altitudes sampled with ATS, and additional data from the MEDA Thermal InfraRed Sensors (TIRS), which measure ground temperature and air temperature at 40m, we can obtain the near-surface vertical temperature profile for specific sols in which thermal contamination is moderate in all sensors. This allows us to study the evolution of the diurnal convective cycle and the vertical temperature gradient. In addition, the Supercam microphone can also deduce the average air temperature from the ground up to 2.1m high thanks to sound speed measurements during Supercam&amp;#8217;s laser zapping rocks. Therefore, it gives an additional hint into the thermal gradient. Furthermore, the amplitude of the thermal oscillations characterizes the thermal turbulence and we present the spectra of turbulence for convective and non convective hours on different moments of the mission. Finally, we will show how the measured thermal data compares with model predictions of the daily cycle of temperatures, expected magnitude of thermal oscillations, and the seasonal evolution.&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;br&gt;&lt;/p&gt;" @default.
• W4220853768 created "2022-04-03" @default.
• W4220853768 creator A5000002636 @default.
• W4220853768 creator A5000161585 @default.
• W4220853768 creator A5001061621 @default.
• W4220853768 creator A5003857863 @default.
• W4220853768 creator A5008242243 @default.
• W4220853768 creator A5009765612 @default.
• W4220853768 creator A5010317064 @default.
• W4220853768 creator A5020901051 @default.
• W4220853768 creator A5024604848 @default.
• W4220853768 creator A5033924899 @default.
• W4220853768 creator A5034274969 @default.
• W4220853768 creator A5038647031 @default.
• W4220853768 creator A5039164235 @default.
• W4220853768 creator A5039311171 @default.
• W4220853768 creator A5045014240 @default.
• W4220853768 creator A5055568516 @default.
• W4220853768 creator A5055645535 @default.
• W4220853768 creator A5058301915 @default.
• W4220853768 creator A5062520877 @default.
• W4220853768 creator A5090085741 @default.
• W4220853768 date "2022-03-28" @default.
• W4220853768 modified "2023-10-17" @default.
• W4220853768 title "Mars 2020 MEDA ATS Measurements of Near Surface Atmospheric Temperatures at Jezero" @default.
• W4220853768 doi "https://doi.org/10.5194/egusphere-egu22-7047" @default.
• W4220853768 hasPublicationYear "2022" @default.
• W4220853768 type Work @default.
• W4220853768 citedByCount "4" @default.
• W4220853768 countsByYear W42208537682022 @default.
• W4220853768 crossrefType "posted-content" @default.
• W4220853768 hasAuthorship W4220853768A5000002636 @default.
• W4220853768 hasAuthorship W4220853768A5000161585 @default.
• W4220853768 hasAuthorship W4220853768A5001061621 @default.
• W4220853768 hasAuthorship W4220853768A5003857863 @default.
• W4220853768 hasAuthorship W4220853768A5008242243 @default.
• W4220853768 hasAuthorship W4220853768A5009765612 @default.
• W4220853768 hasAuthorship W4220853768A5010317064 @default.
• W4220853768 hasAuthorship W4220853768A5020901051 @default.
• W4220853768 hasAuthorship W4220853768A5024604848 @default.
• W4220853768 hasAuthorship W4220853768A5033924899 @default.
• W4220853768 hasAuthorship W4220853768A5034274969 @default.
• W4220853768 hasAuthorship W4220853768A5038647031 @default.
• W4220853768 hasAuthorship W4220853768A5039164235 @default.
• W4220853768 hasAuthorship W4220853768A5039311171 @default.
• W4220853768 hasAuthorship W4220853768A5045014240 @default.
• W4220853768 hasAuthorship W4220853768A5055568516 @default.
• W4220853768 hasAuthorship W4220853768A5055645535 @default.
• W4220853768 hasAuthorship W4220853768A5058301915 @default.
• W4220853768 hasAuthorship W4220853768A5062520877 @default.
• W4220853768 hasAuthorship W4220853768A5090085741 @default.
• W4220853768 hasConcept C121332964 @default.
• W4220853768 hasConcept C1276947 @default.
• W4220853768 hasConcept C153294291 @default.
• W4220853768 hasConcept C161067210 @default.
• W4220853768 hasConcept C38262639 @default.
• W4220853768 hasConcept C39432304 @default.
• W4220853768 hasConcept C58650310 @default.
• W4220853768 hasConcept C63991900 @default.
• W4220853768 hasConcept C65440619 @default.
• W4220853768 hasConcept C83260615 @default.
• W4220853768 hasConcept C85148207 @default.
• W4220853768 hasConcept C87355193 @default.
• W4220853768 hasConcept C91586092 @default.
• W4220853768 hasConceptScore W4220853768C121332964 @default.
• W4220853768 hasConceptScore W4220853768C1276947 @default.
• W4220853768 hasConceptScore W4220853768C153294291 @default.
• W4220853768 hasConceptScore W4220853768C161067210 @default.
• W4220853768 hasConceptScore W4220853768C38262639 @default.
• W4220853768 hasConceptScore W4220853768C39432304 @default.
• W4220853768 hasConceptScore W4220853768C58650310 @default.
• W4220853768 hasConceptScore W4220853768C63991900 @default.
• W4220853768 hasConceptScore W4220853768C65440619 @default.
• W4220853768 hasConceptScore W4220853768C83260615 @default.
• W4220853768 hasConceptScore W4220853768C85148207 @default.
• W4220853768 hasConceptScore W4220853768C87355193 @default.
• W4220853768 hasConceptScore W4220853768C91586092 @default.
• W4220853768 hasLocation W42208537681 @default.
• W4220853768 hasOpenAccess W4220853768 @default.
• W4220853768 hasPrimaryLocation W42208537681 @default.
• W4220853768 hasRelatedWork W164652331 @default.
• W4220853768 hasRelatedWork W1981012795 @default.
• W4220853768 hasRelatedWork W2004146447 @default.
• W4220853768 hasRelatedWork W2009360555 @default.
• W4220853768 hasRelatedWork W2017079406 @default.
• W4220853768 hasRelatedWork W2017848095 @default.
• W4220853768 hasRelatedWork W2329398052 @default.
• W4220853768 hasRelatedWork W2351712730 @default.
• W4220853768 hasRelatedWork W4233123197 @default.
• W4220853768 hasRelatedWork W4249829334 @default.
• W4220853768 isParatext "false" @default.
• W4220853768 isRetracted "false" @default.
• W4220853768 workType "article" @default.