MSL YEAR 4 SUMMER WEATHER DATA [LS 270 TO 0 (360)]

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Updated 3/31/2019.

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, the third year Year 2 and the 4th year Year 3):

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

U

 

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 3

∆ PRESSURE YEAR 4 TO YEAR 3 SAME LS 

~LS year 3

PRESSURE YEAR 1 BEFORE REVISION 

UV

YR


UV

YR

3

MSL YEAR 3 SOL FOR THIS LS/

COMMENTS

MSL Altitude meters  below areoid

           

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)
           
2203 270

Issue on Curiosity preventing it from sending science and engineering data. Spring ends, summer begins.

10/17/2018   N/A  N/A  N/A  N/A  N/A  N/A  N/A  N/A  N/A  898 N/A  270 N/A N/A  H  (1534)   N/A 
2204 271 854, Data may not be for a full sol
10/18/2018  -14 -56 42 1.05 7 -60 -67

21

-4 900 -46 270 N/A  M  H  (1535)   N/A 
2205 271 880 10/19/2018  -13 -70 -57 1.425 6 -80 -86 19 -10 901 -21 271 N/A  M H  (1536)   
2206 272 881 10/20/2018 -14 -74 -61 1.525  6 -73 -79  20 +1 900 -19 272 N/A  M H  (1537)  
2207 273 881 10/21/2018 -14 -72 -58 1.45 7 -73 -80 21  +1  898 -17 272  N/A  M H  (1538)   
2208 273 880 10/22/2018 -18 -75 -57  1.425  7 -73 -80  25 +2 896 -16 273  N/A M H  (1539)   
2209 274 879 10/23/2018 -18 -73 -55 1.375  6 -74 -80  24 -1   896  -17 274 N/A  M H  (1540)   
2210 275 877 10/24/2018 -11 -74 -63 1.575 6 -74 -80 17 0 895 -18 274  N/A   M H  (1541)    
2211 275 876 10/25/2018 -13 -71 -58 1.45 7 -83 -90 20 -12 895 -19 275  N/A  M H  (1542)   
2212 276 877 10/26/2018 -13 -71 -58 1.45 7 -74 -81 20 -3 896  -19  276  N/A  M H  (1543)   
2213 276 874 10/27/2018 -12 -70 -58 1.45 6 -71 -77 18 -1 894 -20 276   N/A  M H   (1544)   
2214 277 872 10/28/2018  -13  -73  -60 1.5  7  -73  -80  20  0 

891

-19  277 N/A  M  M  (1545)  -4,150 METERS 
2215   NO DATA                     889 N/A  278 N/A  No data H    (1546)   
2216 278 868 10/31/2018  -12  -69 -57  1.425  7  -71  -78 19 -2 887 -19  278  N/A  M  H    (1547)  
2217 279 868  11/1/2018  -13 -71 -58  1.45  7  -72 -79 20  -1 887 -19  279 N/A  M  H   (1548)   
2218 280 866 11/2/2018  -7 -71  -64 1.6 7  -74 -81  14 -3  887  -21 280  N/A  M  H   (1549)  -4,150 METERS 
2219 280 868  11/3/2018  -7 -71  -64 1.6   7 -70  -77 14 +1   888 -20 280  N/A  H  VH (1550)   
2220 281 866 11/4/2018  -10 -73 -63 1.575 7  -71  -78  17 +2 886 -20  281 N/A  H  H  (1551)   
2221 282 866 11/5/2018  -4 -70 -66 1.65 9 -73  -82 13   -3   886  -20  281   N/A  H H   (1552) -4,147 METERS 
2222 282 865 11/6/2018  -3 -70  -67 1.675  10 -72  -82 13 -2 884 -19 282 N/A  H  VH  (1553)  -4,147 METERS 
2223 283 850 11/7/2018  2 -64  -66 1.65  11 -68 -79 9 -4 882 -44 revised    to -32 283  894  M VH  (1554)   
2223 283 863 REVISED
11/7/2018  2

-71

revised

73

revised

1.825  11

-72 

revised

-82

revised 

9  -1  882  -44 revised    to -32  283  894  M  VH   (1554)    
2224 283  865  11/8/2018  0  -72  72   1.8 11  -82  -93 11 -10 883 -18  283   N/A   M  VH  (1555)    
2225 284 864 11/9/2018 1 -71 72  1.8  10 -77 -87 9  -6  883  -19  284 N/A  M VH   (1556)  
2226 285 863 11/10/2018 -4 -73 -69 1.725 10 -73  -83 14 0   883   -20  284  N/A  M VH   (1557)  
2227 285 863 11/11/2018 -3 -72 -69  1.725  10 -75 -85 13 -3 880  -17 285 N/A  M H   (1558)  
2228 286 884 11/12/2018  -31 -71  -40 1.0 -4 -77  -73  27 -6  879 +5  286 N/A   M  VH   (1559)  Expect pressure & temp. revision. See Fig. 1 below.
2228 286 860 11/12/2018 0 -71 -71 1.775  10 -77  -87 10 -6   879  -19  286  N/A    M   (1559)   Predicted pressure and temp. revision posted.
2229

287

862 11/13/2018  -2 -71  -69 1.725   11 -80 -91 13 -9 877 -15 286 N/A   M  VH  (1560)   
2230

287

859 11/14/2018   -5 -72 -67  1.675  10 -74  -84 15 -2 877  -18 287  N/A   M  VH   (1561)    
2231

288

860 11/16/2018 -10  -73 -63 1.575  10  -75 -85 20 -2  877  -17 288 N/A   M  VH  (1562)    
2232

289

858 11/16/2018 -3 -73 -70 1.75 11 -72  -83 14 +1  879 -21 288 N/A M  VH (1563)   
2233

289

861 11/17/2018 -4 -72  -68 1.7  11  -73  -84 15  -1  872 -11  289 N/A  M  VH  (1564)    
2234

290

857 11/18/2018 2 -70  -72 1.8 12 -72  -84  10  -2   874 -17  290 N/A  M VH  (1565)   
2235 290  853 11/19/2018  2  -70   -72  1.8  12  -72  -84  10  -2  876 -23 290 N/A M  VH (1566)   
2236 291 857  11/20/2018  -3  -71  -68   1.7  11  -74  -85 14 -3 870 -13 291 N/A   M   VH (1567)   
2237 292 854 11/21/2018  -3  -70  -67 1.675   10   -73   -83 13 -3   876  -22 291  N/A   M  VH  (1568)   
2238 292 853 11/22/2018  -2 -69 -67  1.675   11   -72 -83 13  -3  873 -20 292  N/A  M  VH  (1569)  
2239 293 852 11/23/2018  -2 -70 -68  1.7  10 -83 -93 12 -13 873 -21 293 N/A  M  VH 

(1570)

Unusual ground temp. low not matched by air low. To be revised?

Altitude estimated at -4,150 m. See https://mars.nasa.gov/msl/mission/mars-rover-curiosity-mission-updates/
2240 294 849 11/24/2018  0 -70 -70 1.75 11 -71 -82 11 -1 873  -24 293  N/A   M  VH 

(1571)

 
2241 294 850 11/25/2018  -2  -70  -68  1.7  10  -73  -83  12 -3 869 -19 294  N/A  M  H  (1572)   
2242 295 848 11/26/2018  -2 -70  -68   1.7 11  -74  -85 13 -4 872 -24  295 N/A  M H  (1573)   
2243 295 848 11/27/2018 -3 -70  -67 1.675  11  -74 -85  14 -4  868 -20  295  N/A  M VH  (1574)  
2244 296 849 11/28/2018 -5 -70 -65  1.625   13 -81 -94 18 -11 871 -22 296 860 M H   (1575)  
2245 297 845 11/29/2018 -7 -70 -63 1.575  11  -79 -90 18  -9 869  -24  296  N/A  M VH  (1576)  
2246 297 848 11/30/2018 2 -71 -73 1.825  11 -73 -84 9  -2 866 -18 297 N/A  H H  (1577)  
2247 298 844 12/1/2018 -4  -70  -66 1.65   11  -73  -84  15 -3 868 -24   298   N/A   M  VH  (1578)   
2248 298 846 12/2/2018 1  -71  -72 1.8  10 -75 -85 9  -4  862 -16  298   N/A   M H  (1579)   
2249 299  846  12/3/2018  -4  -70  -66  1.65   11 -74 -85  15  -4  867 -21 299 N/A  H  H  (1580)   
2250 300 842 12/4/2018 -14  -70 -56   1.4   9 -75 -84 23 -5 862  -20 299 N/A  M  H  (1581)    -4,146 METERS
2251 300 847  12/5/2018  -15 -74 -59 1.475     9 -75  -84 24 -1 862  -15 300   N/A  M  H  (1582)    
2252 301 840 12/7/2018 -15  -72  -57 1.425    7 -80 -87 22 -8 862  -22 301 N/A  H  VH   (1583)  -4,145 METERS 
2253 302 845 12/8/2018  -15  -70  -55 1.375    9  -70  -79 24  0 863 -18 301  N/A   H    VH  (1584)   
2254 302 845 12/9/2018  -13 -71  -58 1.45  8 -72  -80 21 -1  864 -19 302 N/A  H   VH  (1585)   
2255 303 841 12/10/2018 -11 -71 -60 1.5 9 -73 -82 20 -2 858 -17 303  N/A  H VH  (1586)  -4,144 METERS 
2256 303 843 12/11/2018 -11 -70 -59  1.475 8 -79 -87  19 -9 860 -17   303  N/A  H VH  (1587) -4,144 METERS 
2257 304  836 12/12/2018  -4  -72   -68 1.7 7 -73  -80  11 -1  858 -22  304 N/A H  VH (1588) -4,144 METERS
2258 305 841 12/13/2018 -6 -70 -64 1.6  8 -71 -79  14 -1  857 -16 304  N/A  H VH  (1589)  
2259    

NO DATA

12/14/2018

                              (1590)   
2260    

 NO DATA

12/15/2018  

                              (1591)   
2261 306  839

12/16/2018 

-7 -70  -63 1.575  6  -72  -78 13 -2  857  -18 306  N/A  H   M (1592)   
2262    

 NO DATA

12/17/2018  

                              (1593)   
2263 308 838 12/18/2018 -6 -74 -68  1.7 8 -72 -80 14     855 -17  307 N/A   H  H (1594)   
2264 308 856 12/19/2018   -49 -63 -14 0.35  -47 -65 -18 2 -2    855  +1 308 N/A   L H 

(1595)

Sol 2264 weather is problematic. See Figure 2.  

 

2264

revised

308 833 12/19/2018 -6 -71 -65 1.625 8 -71 -79 14 0 855 -22 308 N/A H 

 

H

Data was revised after we pointed out problems above. See Figure 2.

 
2265 309  836 12/20/2018  -5 -71  -66 1.65  7 -72 -79  12 -1  850 -14 309 N/A    H  VH (1596)   
2266 309  836  12/21/2018  -7 -71  -64 1.6  6  -82  -88 13 -11 855  -19 309  N/A  H VH  (1597)   
2267 310 830 12/22/2018  -5  -73 -68 1.7 6  -72  -78 11 +1  849 -19  310 N/A  H  VH (1598)   
2268 311 836  12/23/2018  -7 -71  -64  1.6  6  -73  -79 13 -2 853 -17 310  N/A  H  VH  (1599)   
2269 311 828 12/24/2018  -4 -75 -71  1.775 6 -71  -77 10   +4 850 -22 311 N/A  H VH  (1600)  
2270 312 835 12/25/2018  -5 -75 -70 1.75 7 -73 -80 12  +2 853  -18 312 N/A  H H  (1601)  
2271 312 831 12/26/2018 -7 -70 -63 1.575 6 -74  -80  13 -4  852 -21 312  N/A  H VH   (1602)  
2272 313  831  12/27/2018  -4  -73  -69 1.725  6  -72 -78  10   +1  847 -16 313 N/A  H  VH  (1603)   
2273 314 834 12/28/2018   -5  -71  -66  1.65   7  -73   -80   12  -2  850  -16   313   N/A H  H   (1604)   
2274 314 828 12/29/2018  -5 -74 -69  1.725  7  -73   -80   12  +1  846 -18  314 815 H  VH  (1605)   
2275 315 834  12/30/2018  -7 -71  -64   1.6   6 -72 -78  13 -1 850  -16  315 N/A  H  H  (1606)   
2276 315 830 12/31/2018  -6 -71  -65 1.625  6 -72 -78  12  -1  846  -16  315  N/A  H  H (1607)   
2277 316 831 1/1/2019
-5 -71   -66 1.65  6  -75 -81 11 -4 847 -26 316 N/A   H   H  (1608)   
2278 317 828 1/2/2019 -5 -71   -66  1.65  6  -76 -82 11  -5 847 -29 316 N/A   H   VH   (1609)   
2279 317 830 1/3/2019 -8 -71  -63  1.575  5 -71  -76  13     0   N/A  N/A 317 864  H 

L changed to

N/A

(1610)   
2280 318 834 1/4/2019 -5  -71  -66  1.65   5  -72 -77 10   -1  N/A   N/A 318  798 H  N/A  (1611)   
2281 318 826 1/5/2019  -6 -71  -65  1.625  5   -72  -77  11   -1  N/A  N/A  318  812 H  N/A  (1612)   
2282 319 830 1/6/2019  -5  -71 -66   1.65   5  -72 -77  10   -1   846 -16  319 N/A  H  N/A  (1613)   
2283 319 825 1/7/2019  -9 -71  -62 1.55 6  -80    -86 15 -9 837  -12 319 N/A H  N/A  (1614)   
2284 320 829 1/8/2019   -7  -70  -63 1.575  5  -74 -79  12 -4 842 -13 320 N/A  H  H  (1615)   
2285 321 823 1/9/2019   -8 -69  -61 1.525   5  -71  -76  13 -2 848 -25 320  N/A H  H  (1616)   
2286 321 822 1/10/2019   -8  -68  -60 1.5 2 -69  -71  10  -1 840 -18 321 N/A  M VH   (1617)   
2287 322 821 1/11/2019   -7  -69   -62  1.55  2  -70  -72   9 -1  845 -24 322 N/A  M  VH   (1618)   
2288 322 823 1/12/2019   -7  -68 -61 1.525   4 -69 -73 11  -1  841 -18  322  N/A   M  VH   (1619)   
2289 323 822 1/14/2019  -8 -69 -61  1.525  4 -70 -74 12 -1  844 -22 323 N/A  VH  (1620)   
2290 324 821 1/15/2019  -10 -69 -59 1.475  3 -71 -74  13  -2  842 -21 323  N/A  M H  (1621)  
2291 324 823 1/16/2019  -8 -70 62 1.55   2 -69 -71  10  +1 841  -18  324 N/A  M H  (1622)  
2292 325 824   1/17/2019   -7   -72  -65  1.625  1 -69  -70 8 +3 840 -16 324 N/A  M  H  (1623)   
2293 325 821   1/18/2019  -9 -69 -60 1.5  1  -75 -76 10  -6 836 -15 325 N/A  M  H  (1624)   
2294 326 820   1/19/2019  -8 -70 -62  1.55  1  -68 -69 9 +2 839 -19 326 N/A  M  H  (1625)   
2295 326 820  1/20/2019 -8 -68 -60  1.5   1  -67 -68 9 +1  839 -19  326 N/A  M  H  (1626)   
2296 327 817   1/21/2019  -7  -73 -66 1.65  1  -69  -70 8 +4 839 -22 327 N/A  M  H  (1627)   
2297 328 818 1/22/2019 -12 -70 -58  1.45  2 -68 -70  14  +2   839  -21 327  N/A  M H  (1628) -4,143 METERS 
2298 328 817 1/23/2019 -9 -71 -62   1.55   1 -67 -68   10   +4  837 -22  328 N/A  M H   (1629) -4,141 METERS  
2299 329 818  1/24/2019  -5 -74 -69  1.725  2  -68  -70  7  +4  838 -20 328 N/A M  H (1630) -4,140 METERS  
2300  329   818   1/25/2019  -7 -73 -66  1.65  2   -75 -77 9  -2  837 -19  329 N/A M  H (1631) -4,140 METERS   
2301 330 817  1/26/2019  -17 -73  -56 1.4  0  -72 -72  17 +1 836 -19  330 N/A M  H (1632)  
2302 330 815  1/27/2019  -7  -73  -66  1.65  1 -70  -71 8  +3 834 -19  330 N/A M  H (1633) -4,142 METERS   
2303 331 815  1/28/2019   -7  -73   -66   1.65  5 -71  -76 12 +2 834  -19   331  N/A  M  H  (1634)  
2304 332 814 1/29/2019   -6 -73  -67 1.675   4 -72  -76 10  +1 833 -19   331  N/A  M  H  (1635)  
2305 332 814 1/30/2019   -4 -73  -69  1.725  4  -71  -75  8 +2  834  -20 332 N/A  M  H  (1636)  
2306 333 813 1/31/2019  -12 -70 -58 1.45 4 -71  -75  16 -1  833 -20  332 N/A  M  H  (1637)  -4,141.5 METERS 
2307 333 814 2/1/2019  -13 -71 -58  1.45  5  -75   -80 18 -4 833 -19  333 N/A  M  H  (1638)   
2308 334 814 2/2/2019  -13  -71 -58  1.45  3 -74 -77  16  -3 832 -18 334 N/A  M  H  (1639)   
2309  334  814 2/3/2019   -16 -71  -55 1.375  4  -71  -75 20 0  828 -14 334 N/A M  H (1640)  -4,143 METERS    
2310 335 815 2/4/2019   -6  -75   -69   1.725  7 -76 -83 13 -1  831 -16 335 N/A M  H (1641)  
2311 335  812 2/5/2019  -11 -73 -62 1.55 8 -87 --95 19 -14 829 -17 335 N/A M  H (1642) -4,146 METERS 
2312 336 813 2/6/2019  -13 -72 -59 1.475  9 -76  -85 22 -4  832 -19  336 N/A M  H (1643)  
2313 336 814 2/7/2019  -14 -71 -57 1.425  10 -76  -86 24 -5 832  -18   336  N/A  M  H  (1644)  -4,147 METERS 
2314 337 814 2/8/2018 -16 -71  -55 1.375  5  -76   -81 21 -5  832  -18  337 N/A  M  H  (1645)   
2315 338 813 2/9/2019  -17 -71  -54 1.35 6 -73  -79 23 -2 831 -18  338 N/A  M  H  (1646)   
2316 338 814 2/10/2019   -14 -72  -58   1.45  4  -73  -77 18 -1 831  -17 338  N/A   M  H  (1647)   
2317 339 812 2/11/2019  -16 -73   -57  1.425    5 -85 -90 21  -12 830 -18 339 N/A   M  H  (1648)   
2318 339 811 2/12/2019  -17 -73   -56 1.4  4   -74  -78 21  -1  831  -20 339 N/A   M  H  (1649)   
2319 340 812 <