MSL YEAR 3 WINTER WEATHER DATA (LS 90 TO 180)

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This page updated 2/23/2018.

On Table 1 column subjects and color codings are as follows (Note: JPL calls the first year of MSL on Mars "Year 0," the second year Year 1, and the third year "Year 2"):

Column A (Sol). The Martian day is about 39 minutes longer than the terrestrial day.

Column B is solar longitude (Ls). MSL is in the Southern Hemisphere on Mars. The landing was at Ls 150 in winter. Ls 180 begins the spring there.  Ls 270 starts summer, Ls 0 starts the fall. Ls 90 starts the winter.

Column C shows the pressure reported by the REMS Team.

Column D shows the date on Earth.

Column E shows the maximum air temperature. With respect to the freezing point, from 0° C at 1 atm pressure it will increase up to 0.01° C at 0.006 atm (which is about the average pressure on Mars as given by NASA). This is the triple point of water. At pressures below this, water will never be liquid. It will change directly between solid and gas phase (sublimation). The temperature for this phase change, the sublimation point, will decrease as the pressure is further decreased

Column F shows minimum air temperature.

Column G shows the air temperature range for each sol. On Earth temperatures can vary by 40 °C in deserts. In column G where the range is 59 °C or less yellow background coloring points that out. The National Park Service claims the world record in a diurnal temperature variation is 102 °F (57 °C) (from 46 °F (8 °C) to −56 °F (−49 °C)) in Browning, Montana (elevation 4,377 feet/1,334 meters) on January 23 to 24, 1916. There were 2 days in Montana where the temperature changed by 57 °C.

Column H shows temperature range divided by 40. This allows us to compare terrestrial deserts with Gale Crater, Mars. How much cooling occurs at night is related to the density of the atmosphere. Here we see the ratio of cooling on a Mars sol to the typical 40 °C cooling figure for Earth's deserts shown with a green background when that ratio is under 1.5. For MSL Year 1 when we altered the devisor from 40 °C  to 57 °C then 88 of the ratios were altered to 1 or less than 1, meaning that Martian air pressure is indeed likely much higher than NASA claims.

Column I shows maximum ground temperature. As with terrestrial deserts, the ground on Mars heats more during the day than the air does, and it cools more at night than the air does. In Column K when the maximum ground temperature is given by REMS is above 0°C it is shown with a red background.

Column J shows the minimum ground temperature. When it is -90 °C or colder the background is in purple. The ground temperatures are not very precise. The requirement was to measure ground brightness temperature over the range from 150 to 300 K with a resolution of 2 K and an accuracy of 10 K

Column K. Drop in ground temperature from day to night.

Column L shows the increase in temperature from the mast 1.5 meters above the ground down to the ground during the daylight hours. In column N anytime there is an increase in temperature of 11 °C or more this in indicated with a dark blue background.

 

Column M shows the decrease in temperature from the ground to the air at nights. If the data were valid we would expect similar heating or cooling to occur over the set distance from ground to boom. A quick survey of the data immediately shows that this was not found. In column L we see a variation in heating between 0 °C and at least 15 °C with a 54 °C anomaly on Sol 1,070. For nighttime cooling any variation from 11°C to 19°C is shown with a medium blue background. More than that is shown with a dark blue background.

Column N shows the pressure for the same Ls in MSL Year 1.

Column O shows the absolute value of the change in pressure in Pascals from the same Ls in the previous year (Column [M] - [C]).

Column P shows the original pressure for the same Ls in MSL Year 1 before JPL revised their data.

Column Q shows the Ls during Year 1.

Column R shows the UV for the sol in Year 2.

Column S shows the UV for the sol in Year 1. All sols in MSL Year 1 and Year 2 have opacity listed as “sunny” which seems dubious.

Column T shows comments, if any.

 

 

 

 

 

A

B

C

D

E

F

G

H

I

J

 K

L M N O P Q R S T
 

SOL

~LS

PRESSURE Pa   

EARTH DATE

MAX AIR TEMP °C   

MIN AIR TEMP °C

AIR TEMP RANGE °C

AIR TEMP RANGE °C/40

MAX GROUND TEMP °C

MIN GROUND

TEMP °C

∆ GROUND TEMP DAY    TO NIGHT

DAYTIME CHANGE IN TEMP °C  AIR TO GROUND

NIGHTTIME CHANGE IN TEMP °C AIR TO GROUND

PRESSURE AT SAME LS IN MSL YEAR 2

∆ PRESSURE YEAR 3 TO YEAR 2 SAME LS 

~LS year 2

PRESSURE YEAR 1 BEFORE REVISION 

UV

YR

3 

UV

YR

2

MSL YEAR 2 SOL FOR THIS LS/

COMMENTS

             

YELLOW IF <60 °C

GREEN IF<1.5

RED IF

> 0 °C

PURPLE = >-90°C OR COLDER

YELLOW NUMBERS = -80 to -89 °C,

red background = -90°C or colder drop

BLUE = >10°C

PURPLE = >10°C

  YELLOW = 
> 7 Pa)
         
  1881 90 832 11/20/2017 -29 -79 50 1.25 -8 -83 75 21 -4 851 -19 90 N/A M
 
M. Year 1 was M.  

1212 was a  last day of fall. 1881 is a first day of winter. This seasonal chart starts with a comparison of Sol 1213.

  1882 90  831 11/21/2017  -31 -78 47 1.175 -7 -83  76 24 -5 850  -19  90  N/A  M   M. Year 1 was M.   (1214)
  1883 91 830 11/22/2017  -28 -78  50  1.25 -8 -82 74 20 -4  848 -18 91 N/A  M  H. Year 1 was M.     (1215) 
  1884 91 829 11/23/2017  -29 -79  50  1.25 -8  -83 75 21  -4    847 -18 91 N/A  M  M. Year 1 was H.     (1216)
  1885 91 827 11/24/2017  -30 -79  49 1.225  -8  -83  75 22  -4    846  -19  92 N/A  M  M. Year 1 was H.    (1217) 
  1886 92 826 11/25/2017  -27 -79  52 1.3 -8  -83   75 19 -4   845  -19  92 N/A  M   M. Year 1 was M.    (1218) 
  1887 92 824 11/26/2017  -26 -79   53 1.325 -9 -83  74 17 -4  844 -20  93 N/A  M  M. Year 1 was M.     (1219)
  1888 93 823 11/27/2017 -25 -79  54 1.35 -9 -86 77 16 -7  842 -19 93 N/A   H  M. Year 1 was H.    (1220) 
  1889 93 822 11/29/2017 -28
-80 52 1.3 -7 -85 78 21   -4   847 -25 93  N/A   H  M. Year 1 was M.    (1221) 
  1890 94 821 11/30/2017 -28 -79  51 1.275 -9 -85 76 19 -6 840 -19  94 N/A  H  M. Year 1 was M.  (1222)  
  1891 94 819 12/1/2017 -25 -80 55 1.375  -6 -86 80 19  -6  839 -20  94 N/A  H   M. Year 1 was M. (1223)  
  1892 95 817 12/2/2017 -29 -81 52  1.3  -11 -84  73 18 -3 837 -20  95 N/A  M  M. Year 1 was M.  (1224)  
  1893  95  816 12/3/2017  -25 -79  54 1.35  -10 -82  72  15  -3  836 -20   95  N/A  M  M. Year 1 was M.  (1225) 
  1894 96 815 12/4/2017  -28  -79  51  1.275  -6  -83 77 22 -4 835 -20   96 N/A  H  M. Year 1 was M.  (1226) 
  1895 96 814 12/5/2017 -29 -78 49  1.225  -7 -87 80  22  -9 833 -19   96  N/A    H   M. Year 1 was M.  (1227) 
  1896 96 812 12/6/2017 -23 -79  56 1.4 0 -87   87  23 -8 832 -20  97 N/A    H  M. Year 1 was H.  (1228) 
  1897 97 811 12/7/2017 -27 -80 53 1.325  -1 -93 -92 26 -13 832  -21  97  N/A   H M. Year 1 was M.  (1229)
  1899 97 810 12/8/2017  -27  -81 54 1.35   -1  -92 -91 26  -11 830 -20   98 N/A   H M. Year 1 was M.  (1230)
  1899 98 808 12/9/2017 -23 -81  58 1.45   -1  -91 -90

22

 

-10 828 -20   98 N/A   H M. Year 1 was M.  (1231)
  1900 98 807 12/10/2017 -25 -81 56 1.4  0 -89 -89   25  -8  828  -21  98  N/A  H  M. Year 1 was M  (1232) 
  1901 9 806 12/11/2017 -28 -81 53 1.325   -1  -90 -89  27 -9 827 -21   99 N/A  H  M. Year 1 was M  (1233) 
  1902 99 804 12/12/2017  -27  -79   52 1.3  -9 -83 -74 18  -4 824 -20   99  N/A  M  M. Year 1 was H.   (1234) 
  1903 100 803 12/13/2017  -25  -78 53  1.325  -10 -82 -72 15 -4 824 -21  100  N/A  M  M. Year 1 was H.   (1235) 
  1904 100 801 12/14/2017  -27 -79 52  1.3  -11 -83  -72 16 -4 822 -21 100  N/A  M  M. Year 1 was H.   (1236) 
  1905 101 800 12/15/2017 -22 -80 58 1.45 -8 -82 -74 14 -2 820 -20   101  N/A  H M. Year 1 was H  (1237)
  1906 101 799 12/16/2017 -23 -79 56 1.4  -7 -85 -78 16  -6 819 -20   101  N/A  M M. Year 1 was M   (1238)
  1907 101 798 12/17/2017 -29 -79 50 1.25  -8 -85 -77 21 -6  818 -20   102 N/A  H M. Year 1 was M    (1239)
  1908 102 796 12/18/2017 -28 -79 51 1.275   -7 -84 -77  21  -5 816 -20   102  N/A  H M. Year 1 was M    (1240)
  1909 102 793 12/19/2017 -27 -80 53 1.325   -7 -88 -81 20 -8 816 -23 103 N/A  H M. Year 1 was M.   (1241)
  1910 103 794 12/20/2017 -23 -80 57 1.425   -7 -85 -78 16 -5  815 -21  103  N/A  H M. Year 1 was M.   (1242) 
  1911 103  792 12/21/2017  -22 -79  57  1.425  -9 -84 -75 13 -5   814 -22 104  N/A   M  M. Year 1 was H.     (1243)
  1912 104 791 12/22/2017  -25 -80  55 1.375   -7  -82 -75  18 -2 812 -21 104  N/A   H  M. Year 1 was M.  (1244)
  1913 104  791 12/23/2017  -27 -79  52 1.3  -7 -81 -74 20 -2 811 -20 105  N/A   H   M. Year 1 was M. (1245)
  1914 105 790 12/24/2017  -21 -78  57  1.425  -7  -82 -75  14 -4  810 -20 105  N/A   H  M. Year 1 was M.  (1246)
  1915  105 788 12/25/2017  -23 -78 55 1.375    -5 -82 -77 18 -4  809 -21 105  N/A   H  M. Year 1 was M.  (1247)
  1916 106 787 12/26/2017  -22  -79  57  1.425    -6 -81 -75  16  -2  807 -20 106 N/A  H  M. Year 1 was M.   (1248) 
  1917 106 786 12/27/2017  -19 -80 61 1.525  -6 -80 -74 13 0 806 -20 106 N/A  H  M. Year 1 was M.   (1249) 
  1918 107 784 12/28/2017  -18 -77 59 1.475  -5 -83 -78 13  -6 804 -20  107  N/A  H  M. Year 1 was M.   (1250) 
  1919 107 783 12/29/2017  -26 -77  51 1.275  -5 -82  -77 21 -5 803 -20  107   N/A H M. Year 1 was M.    (1251)
  1920 108 782 12/30/2017  -25 -77  52 1.3 -4 -81  -77 21 -4 802 -20  108 N/A  H  M. Year 1 was M.    (1252)
  1921 108  781 12/31/2017  -19 -78 59  1.475  -5 -81  -76 14 -3 800 -19 108 N/A  H M. Year 1 was M.   (1253)
  1922 108  780 1/1/2018 -24 -79 55 1.375  -6 -82  -76 18 -3 799 -19 109  N/A H  M. Year 1 was M.   (1254) 
  1923 109 778 1/2/2018 -23 -77 54 1.35   -2 -83 -81 21 -6 798 -20  109  N/A  M. Year 1 was M.   (1255) 
  1924 109 777 1/3/2018 -21 -78 57 1.425  -2 -80 -78 19 -2 795 -18 110 N/A  M. Year 1 was M.   (1256) 
  1925 110 777 1/5/2018 -19 -79 60 1.5 -1 -81 -80   198 -2  794 -17 110  N/A   M. Year 1 was M.  (1257) 
  1926 110 775 1/6/2018  -24 -80 56 1.4  -2 -81  -79 22 -1 794  -19 111  N/A     M. Year 1 was M.  (1258) 
  1927 111 774 1/7/2018  -24 -79  55 1.375   -1 -80 -79 23 -1  794 -20  111 N/A     M. Year 1 was M.  (1259) 
  1928 111 773 1/8/2018 -24 -78 54 1.35   -2 -80 -78 22  -2  792 -19   112 N/A  H  M. Year 1 was M  (1260)
  1929 112 771 1/9/2018 -26 -79 53 1.325   -5 -84 -79  21 -5  793 -22  112 N/A  H M. Year 1 was M   (1261)
  1930 112 770 1/10/2018 -24 -79 55  1.375   -2 -83 -81 22 -4 790 -20  112  N/A   H M. Year 1 was M. 

(1262)

Elevation on Sol 1930 = 4,149 meters below areoid

  1931 113 770 1/11/2018 -22 -79 57 1.425  -11 -82 -71 11 -3 788 -18 113  N/A  H   M. Year 1 was M. (1263) 
  1932 113 768 1/12/2018 -24 -79  55   1.375  -12 -81 -69 12 -2 787 -19  113  N/A H M. Year 1 was M.  (1264) 
  1933 114 767 1/13/2018 -23 -78 55   1.375  -12 -83 -71  11 -5 787  -20  114 N/A  H   M. Year 1 was M. (1265)
  1934 114 766 1/14/2018 -21 -79 58 1.45 -11 -80  -69 10 -1 787  -21  114  N/A H M. Year 1 was H.  (1266) 
  1935 115 765 1/15/2018 -21 -80 59 1.475  -11 -80 -69  10  0  786 -21  115 N/A  H  M. Year 1 was M.  (1267) 
  1936 115 764 1/16/2018 -20 -79 59  1.475   -11 -79 -68 9 0   784 -20   115  N/A   H  M. Year 1 was M.   (1268)
  1937 116 763 1/17/2018 -22 -80 58  1.45  -10 -80 -70 12 0   782 -19 116 N/A   H  M. Year 1 was M.   (1269)
  1938 116  762 1/18/2018  -24 -78 54 1.35 -12 -81 -69 12  -3  782  -20   116 N/A  H   M. Year 1 was M.   (1270) 
  1939 116  760 1/19/2018  -20 -78    58   1.45  -3 -83 -80 17 -5 781 -21 117 N/A  H   M. Year 1 was M.   (1271) 
  1940 117 759 1/20/2018  -19 -77 58  1.45  -2 -82 -80 17 -5 780  -21 117 N/A  H   M. Year 1 was H.   (1272) 
  1941 117 758  1/21/2018 -20 -77 57 1.425   -2 -80 -78 18 -3  778 -20  118 N/A  H   M. Year 1 was M.   (1273) 
  1942 118 757 1/22/2018 -27 -78 51 1.275  -1 -79 -78  26 -1  777 -20  118  N/A  H  M. Year 1 was M.   (1274) 
  1943 118 756 1/23/2018 -28 -78 50 1.25   -6 -87 -81 22 -9 775 -19  119  N/A H M. Year 1 was M.  (1275) 
  1944 119 755 1/24/2018 -21 -80 59 1.475  -5 -86 -81 16 -6 774 -19  119  N/A  H L changed to M. Year 1 was M. 

(1276) 

Elevation on Sol 1944 = 4,147 meters below areoid

  1945 119 751 1/25/2018 -22 -78 56 1.4   0 -89 -89 22 -11  774 -23 120  N/A M H. Year 1 was L changed to M.  (1277) 
  1946 120 753 1/26/2018 -20 -79 59 1.475  -1 -89 -88 19 -10 778 -25 120   N/A  H  M. Year 1 was M. (1278) 
  1947 120 751 1/27/2018 -19 -78 
59 1.475   -6 -86 -80 13 -8 772 -21 121 N/A   M  H. Year 1 was L changed to M.  (1279)  
  1948 121 752 1/28/2018 -18 -78  60 1.5 -6 -84 -78 12 -6 771 -19 121 N/A   M  H. Year 1 was L changed to M.  (1280)  
  1949 121 751 1/29/2018 -20 -78  58 1.45  1 -84  -85 21 -6  769 -18 122 N/A   M  H. Year 1 was L changed to M.  (1281)  
  1950 122 750 1/30/2018 -15 -79  64 1.6 -5 -84 -79 10 -5  768 -18  122  N/A  H  M. Year 1 was M.  (1282)  
  1951 122 749 1/31/2018 -23 -77 54 1.35 -4 -84 -80 19 -7 768 -19 123 N/A  H  H. Year 1 was L changed to M.   (1283) 
  1952 123 748 2/1/2018 -25 -80 55 1.375  -3 -83 -80  22 -3 767 -19  123  N/A  H  M. Year 1 was M.  (1284) 
  1953 123 747 2/2/2018 -22 -78 56 1.4  -4  -82 -78 18 -4  766 -19  123  N/A  H M. Year 1 was M.  (1285) 
  1954 124 745 2/3/2018 -17 -77 60 1.5 -3 -84 -81 14 -7 765 -20 124 N/A  H  M. Year 1 was M.  (1286) 
  1955 124 745 2/4/2018 -21 -77 56  1.4   -4  -83 -79 17 -6 764 -19  124  N/A  H M. Year 1 was M.  (1287) 
  1956 125 744 2/5/2018 -14 -79 65 1.625 -3 -84 -81 11 -5 763 -19 125  N/A   H M. Year 1 was L changed to N/A.    (1288). Note: Sol 1956 had no data posted until 2/5/2018.
  1957 125 741 2/6/2018 -21 -77  56  1.4  -3  -85 -82 18  -8 N/A   N/A   125  N/A   H  N/A. Year 1 was M.   (1289)
  1958 126 741 2/7/2018 -14 -77  63 1.575 -2 -82 -79  12 -5 N/A   N/A   126 N/A   H  N/A. Year 1 was M.   (1290)
  1959 126 740 2/8/2018 -15 -78 63  1.575  -2  -82  -80 13 -4 760 -20  126  N/A H H. Year 1 was M.  (1291)
  1960 127 740 2/9/2018  -14 -78 64 1.6 -2  -81 -79 12  -3 760 -20 127 N/A  H H. Year 1 was M.  (1292)
  1961 127 742 2/11/2018  -21 -77  56   1.4  -3 -84 -81 18 -7 758 -16 127 N/A  H M. Year 1 was M.  

(1293)

  1962 128 738 2/12/2018 -14 -78 64  1.6  3 -82 -85 17 -4  758  -20  128  N/A  H M. Year 1 was M.  

(1294). Note: altitude on Sol 1962 was -4,147 meters.  Altitude on Sol 1294 was -4,424 meters.

Curoisity has climbed 277 meters in a Martian year. The pressure dropped    20 Pa.

See the calculation below.

  1963 128 737 2/13/2018 -14 -77 63 1.575  3 -87 -84 17  -10 758  -21 128  N/A   H M. Year 1 was M.   

(1295)

  1964 129 736 2/14/2018 -16 -75 59 1.475  4 -84 -88 20 -9 756 -20  129  N/A  H M. Year 1 was M.  

(1296)

  1965 129 735 2/15/2018 -12 -76 64 1.6  3  -83 -86 15 -7 755 -20  129  N/A  H  M. Year 1 was M.    (1297) 
  1966 130 735 2/16/2018 -18 -77 59  1.475   3 -82 -85 21 -5 755 -20  130 N/A H  M. Year 1 was M.    (1298) 
  1967 130 734 2/17/2018 -15 -76 61 1.525 4 -84  -88  19 -8 753 -19 130 N/A  H  M. Year 1 was M.    (1299) 
  1968 131 732 2/18/2018 -19 -76 57 1.425   3 -85 -88  22 -9 752 -20, but note alteration in pressure previous year 131  945 H M. Year 1 was H.   (1300)
  1969 131 732 2/19/2018 -16 -76 60 1.5   3 -84  -87 19 -8  752  -20, but note alteration in pressure previous year  131  1154 H M. Year 1 was H.   (1301)
  1970 132 732 2/20/2018 -16 -77 61  1.525  4 -83 -87 20  -6 751 -19   732 N/A  H M. Year 1 was H.    (1302)
 

SOL

~LS

PRESSURE Pa  

EARTH DATE 

MAX

AIR

TEMP

°C 

 

MIN

AIR

TEMP

°C

 

AIR

TEMP

RANGE

°C

 

AIR

TEMP

RANGE

°C/40

 

MAX

GROUND

TEMP °C

 

MIN

GROUND

TEMP °C

 

∆ GROUND

TEMP

DAY

TO

NIGHT

 

DAYTIME

CHANGE

IN TEMP 

°C AIR

TO GROUND

 

NIGHTTIME

CHANGE

IN TEMP

°C AIR TO

GROUND

PRESSURE AT SAME   LS IN MSL  YEAR 2
∆ PRESSURE YEAR  2 TO YEAR 3 SAME LS  ~LS Year 1

PRESSURE YEAR 1 BEFORE REVISION 

 
UV YR 3

UV YR   2)

 

CHECK OF PRESSURE ACTUAL AND PREDICTED DIFFERENCES BETWEEN SOL 1294 AND 1962 (ONE MARTIAN YEAR AT LS 128)

 

  ENTERING ARGUMENTS SCALE HEIGHT 10.8 KM AND AVERAGE MARTIAN PRESSURE 6.1 MBAR            

PREDICTED PRESSURE IN PASCALS BEFORE LS/ALTITUDE ADJUSTMENT

ACTUAL CLAIMED PRESURE MEASURED

PREDICTED PRESSURE IN PASCALS AFTER LS/ALTITUDE ADJUSTMENT

   KILOMETERS  10.8 km Scale Height (MARS) RATIO A/B  =-EXP(C value)  1/D value  PRESSURE MARS BARS PRESSURE IN MBAR

   
 
SOL 1294 (Ls 128) -4.424 10.8 -0.40962963 -0.663896092 -1.506259808 1.506259808 9.188184828 918.8184828 758  
SOL 1962 (Ls 128)
-4.147 10.8 -0.383981481 -0.681144041 -1.468118254 1.468118254 8.95552135 895.552135 738 738.8
MEAN AREOID 0 10.8 0 -1 -1 1 6.1 610 N/A N/A

 

Scale Height Generated Average Pressure on Sol 1294 = 918.82 Pa

Actual Pressure on Sol 1294 at altitude -4.424 Km = 758 Pa

Scale Height Generated Average Pressure on Sol 1962 = 895.55 Pa

Adjusted pressure on Sol 1962 = 7.38.8 Pa

Calculated Pressure at Sol 1962  = actual pressure at altitude -4.424 km (758 Pa) * Scale height projected pressure at Sol 1962 (895.55 Pa)/ Scale height projected pressure at Sol 1292 (918.82 Pa).  So Calculated Pressure at Sol 1962 = (758)*(895.55)/918.82 = 738.8 Pa. The actual pressure  given by REMS was 738 Pa. Either our math is very good, or someone in NASA or at REMS is doing the same math and putting out the answers as real data when it is really made up.