HOME PAGE Web Site Contents Mars Report Contents Mars Report Abstract CV for Dr. David Roffman Diplomas PhD Thesis PhD Thesis Powerpoint Mars PowerPoint MSL Weather Reports Base on Mars? Seasonal Pressure Altitude Calculations Seismic Activity on Mars? Perserverance Weather Data MSL Years 5-6 Winter MSL Year 5 FALL MSL Year 5 Summer MSL Year 5 Spring MSL Years 4-5 Winter MSL Year 4 FALL MSL Year 4 Summer Weather MSL Year 4 Spring Weather MSL Yr 3-4 Winter Weather MSL Fall Yr 3 Weather MSL Yr. 3 Summer Weather MSL Yr. 3 Spring Weather Martian plume March 25 2017 MSL Ultraviolet 3 YEARS OF MSL UV Desai, EDL, Parachutes & ExoMars Mars winter vs. summer temps Helo to Mars Sea at Utopia Planitia, Mars Tree Stump at MSL? Spherical life on Mars? Mars Report Abstract, 1-1.2 Mars Report Sec.2-2.1 Report 2.2-2.4 Report 2.5-2.5.2 Report 2.5.3-2.7 Report 3-4 Report 4.1-4.1.2 Report 5 to 6 Report  7-7.2.1 Report 8 Report 9 Report 10 Report 11 Global Dust Storm Report 12 Report  13-13.2 Report 13.3-13.5 Report 13.6 Report 14-15 Report 15.1 Report 15.2-15.3 Report 15.4-15.6.2 Report - Report Report 16-16.1 Report 17-20 Report References Rebuttal of REMS Report Running water on Mars MSL Year 0 Weather MSL Yr 2 Winter-Spring Weather MSL Yr 2 Summer Weather MSL Yr 2 Fall Weather MSL Yr 2-3 Winter Weather Adiabatics MSL Hi Temps MSL Low Temps Organic Chem found by MSL Oxygen in Mars Air MSL Day length & Temp Warm winter ground temps 155-Mile High Mars Plume Radiation Diurnal Air Temp Variation Mars Temps Fahrenheit Beagle found JPL/NASA Pressure Mistakes Enter MarsCorrect Sol 370, 1160 & 1161 Histories Mars-Radio-Show JPL Fudges Pressure Curves MSL Temp. ∆ Mast to Ground High & Low Pressures Normalized Mars soil 2% water Moving rock Mars MAVEN MSL Relative Humidity Claim Ashima Concedes Original MSL Weather Record Old MSL Weather Record MSL Summer Weather Pressure Estimate REMS Wind MSL Pressures REMS Reports Curiosity Geology CERN-2013-pics Daylight Math MSL Errors P1 MSL Errors P2 MSL-Chute-Flap MSL daylight Ashima Sols 15 to 111 Ashima Sol 112 to 226 Ashima Sol 227 on New Ashima Sols 270+ MSL Summer to Sol 316 Updated Secrets of Mars Weather Forecast Wind Booms MSL Credibility MSL Temp. Swings MSL Temperatures Sample Analysis at Mars (SAM) VL2 - MSL Ls Comparson Ashima MIT Mars GCM Dust Storm Nonsense Mars Slideshow Moving Sand & Martian Wind 3 DEC12 Press Conf. MSL Press Conf. 15NOV2012 Sol Numbering MSL Pressure Graph to Ls 218.8 MSL Sky Color Mars Sky Color DATA DEBATE! Zubrin's Letter Phoenix Vaisala Vaisala Pressure Sensors Phoenix &MSL Flawed MSL REMS Viking pressure sensors failed MSL landing site Mars Landings Phobos Grunt Martian Air Supersaturation Mars & CH4 Mars and MSL Time Viking Pressure Audit Links Mars Society 2008 Quant Finance Frontiers Home Front. Preface Frontiers Ch. 1 Frontiers Ch. 2 Antimatter Lightning Frontiers Ch. 3 Frontiers Ch. 4 Frontiers Ch. 5 Frontiers Ch. 6 Frontiers Ch. 7 Frontiers Ch. 8 Frontiers Ch. 9 Frontiers Ch 10 Frontiers Ch 11 Frontiers Ch 12 Frontiers Ch 13 Frontiers Ch 14 Frontiers Ch 15 Frontiers Ch 16 Frontiers Ch 17 Frontiers Ch 18 Frontiers Ch 19 Frontiers Ch 20 Frontiers Ch 21 Frontiers Ch 22 World Tour Spring-Break -13 Other Travels Asteroid Impact? ExoMars data Unit Issues Viking Pressures Tavis CADs Landing Long Scale Heights LS of Max/Min Pressures Tavis Report Tavis Failures Lander Altitude Martian Trees? Code Experiment Gedanken Report Mars Nuke? Martian Flares Mach Numbers MOLA (altitude) Original Mars Report Mariner 9 & Pressure Mars  Temps MSL Time MPF Pressure Blog Debates Spring Pendulum Plasma Model Reporting Errors Orbital Parameters Anderson Localization P. 1 Anderson Localization P. 2 Moving rock old Navigating Mars Mars Report Section Links Mars Report Figure Link Gillespie Lake rock outcrop MSL Sol 200 Anomaly Sol 1300&1301 Anomalies Gilbert Levin & Labeled Release Brine on Mars Ceres Lights Yr 1 Table 1 Missing data Mitchell Report Old Mars Report All MPF Temps ExoMars fails Did Spirit find past life? MSL ground temps go haywire OPACITY AT MSL Luminescence on Mars Dust Storms & Microorganisms 2018 Global Dust Storm Links to Sections of the Basic Report

Updated on 8/20/2015.

On September 1, 2012 I noticed that the Rover Environmental Monitoring Station (REMS) team (who worked for JPL/NASA) published a Martian surface pressure that was similar to what might be expected for Vail, Colorado (742 hPa). I immediately called Guy Webster, JPL publicity man, to advise him that if true, he needs to have President Obama make an announcement that MSL has discovered Mars has air pressure like that on Earth. Webster told me that he would pass the problem on to Ashwin Vasavada, the Project Scientist for MSL. The higher pressures continued for 5 days. On September 5, 2012 the pressure reported was 747 hPa. But the next day, September 6, 2012, the pressure reported was 747 Pa (not hPa). The new pressure was like swapping 747 dollars for 747 cents. See Figures 1 and 2. It was one hundredth of the previous day’s pressure and close to a vacuum again. By this time it was apparent that there were many serious problems with MSL and the credibility of those (in Spain) who were responsible for reporting on Martian weather. NASA was very slow to admit that it had real problems with all its weather data. But in Chapter 8 of the book Mars Up Close  we are given a close up of “The Anomaly” that almost shutdown MSL on its 200th day. The computer that was supposed to turn off some of the equipment at about 2 pm local time on Mars was not doing its job.

Figure 1 above - Summary of reported weather for MSL Sols 8 to 33. Figure 2 below - Original and revised MSL weather reports for September 5 and 6, 2012.

        On page 156 of the book Magdy Bareh, electrical and computer engineer for MSL troubleshooting, discusses the problem:

Why didn’t it shut down? Bareh asked himself more than once. Yet the inability to shut down wasn’t the big problem, it was not knowing why it was happening that was worrisome.

How can we trust this computer?

Well, we can’t.

     Sol 200 was on my radar screen two years before I read the above remarks by Bareh. As is shown on Figure 3, the pressure first report for that day was 937 hPa. That was higher than the highest pressure ever claimed by the REMS Team and JPL after it revised its data. The revised data showed a maximum pressure of 925 hPa that occurred on MSL Sols 170 and 171 (Ls 252 to 253 in MSL Year 1) and again on MSL 846 at Ls 257 in MSL Year 2. What Bareh seems to have addressed is a problem that came to his attention on February 27, 2013 via data downloaded at 10 am with a strange warning that involved several bits, the smallest measure of computer information. The errors were associated with a failure of Curiosity to send higher-level data to JPL correctly, although low-level telemetry. While Chapter 8 of Mars up Close does an adequate job of describing how they analyzed the problem and supposedly overcame it by putting the main computer into isolation and activating a backup computer, an unaddressed issue is why did the weather data for Sol 200 look so much like that on Sol 192? The pressure first given for Sol 192 was 940 Pa - 3 Pa higher than Sol 200. JPL changed both pressures to N/A. While high air temperatures for that time (summer began in Sol 197) were running between freezing and about -5°C, for Sol 192 it was -16°C, and for Sol 200 it was -21°C. A check of the REMS weather data site now indicates that JPL lists all weather data for these two sols as "Value not available," although they do indicate that both sols were sunny. However, through at least the first 1,077 sols (August 17, 2015), they never listed the sky condition as anything but sunny (despite UV values varying from very high to low). The original data posted offered minimum air temperatures of -68°C for both sols 192 and 200. There is reason to question whether all the weather instruments were malfunctioning on Sol 192 for the same reason that they did on Sol 200. Of course, JPL published 100% false wind data from August 6, 2012 until April 2013 when I nagged JPL's PR man Guy Webster to change all the wind data to N/A. Webster had admitted to me that the wind instrumentation broke of landing (this was well known). Two days after we spoke the wind data was pulled down and replaced with N/A.

Figure 3 - Summary of reported weather for MSL Sols 169 to 200.

Figure 4 shows a graph of maximum and minimum air and ground temperatures up through Sol 200. JPL states that, “A change in the pattern just after Sol 120 corresponds to Curiosity driving onto a type of ground with higher thermal inertia -- thus cooling off more slowly in the evening and warming up more slowly in the morning. The higher thermal inertia of this area was predicted from orbitistortal infrared measurements and is likely due to greater abundance of exposed bedrock relative to soil or sand.” However, in looking at the (revised) REMS weather reports available on August 19, 2015, I see that the entire weather report for Sol 200 now is NOT AVAILABLE. In fact, original pressure values between sols 192 and 200 were originally as high as 940 and 937 Pa and as low as 886 Pa, but all three pressures were changed to N/A. In fact, the revised weather shows all data as N/A from Sol 200 through 222. There was a weather report originally issued for Sol 215 after JPL noticed that the minimum air temperature was a relatively very warm -28º C (-18.4º F) they again pulled the weather data for the day and listed it all as N/A. This is the very real pattern that is seen again and again. Anytime the numbers do not fit JPL expectations they alter or distort the data or pull it all and list it as N/A. 

Figure 4 - Maximum and minimum air and ground temperature up to Sol MSL 200. Image credit: NASA/JPL-Caltech/CAB(CSIC-INTA)/FMI/Ashima Research.