Lichens, cyanobacteria and molds growing in humidity of simulated Martian atmosphere: Difference between revisions

No edit summary
Line 5:
 
[[Image:Curiosity humidity measurements.gif|thumb|Upper chart shows the humidity, lower chart shows the volume mixing ratio in parts per million, both measurements taken at the same time, height 1.6 meters above the ground]][[Image:Curiosity temperature measurements.gif|thumb|Upper chart shows the average temperature, lower chart shows the range, the warm orange and red colours are Curiosity annual readings, the blue and green dcolours are for the Viking landers and the gray colours are for the Phoenix lander]]
The humidity variations on Mars are mainly due to the daily and seasonal variations of temperature of the air, with colder air having a higher relative humidity for the same water content. TheThere is very little by way of water vapour in the Mars atmosphere. This is measured as the volume mixing rationratio of water vapour varies(VMR), upand tois highest in summer, at around 70 ppm, andat isthe anti-correlatedCuriosity withsite. However, that's when the relative humidity is lowest, withat thearound 10%. The highest relative humidity of 70% happens in winter at times of least VMRvolume mixing ratio, often less than 10 ppm, so they are anti-correlated.
 
This section is based on the survey article by Martinez et al, "The modern near-surface martian climate: A review of in-situ meteorological data from Viking to Curiosity."<ref>Martínez, G. M., C. N. Newman, A. De Vicente-Retortillo, E. Fischer, N. O. Renno, M. I. Richardson, A. G. Fairén et al. "The modern near-surface martian climate: A review of in-situ meteorological data from Viking to Curiosity." Space Science Reviews 212, no. 1-2 (2017): 295-338.</ref>