MSL Pressures from a minimum at Sol 1334 to Sol 1404.
This article focuses on missing weather data for Sols 1389 through Sol 1397 (9 sols). The page is under construction on 7/20/2016.
Between July 3 and July 11, 2016, as I swam laps in our condominium pool at night, I enjoyed looking up into the sky over our home in Cape Canaveral because the view of Mars was spectacular. So, without consulting any books, I knew that there was no excuse of Mars being on the wrong side of the sun to explain why NASA/JPL and the REMS Team had no weather data for sols 1389 through 1397. Then, when they resumed data for Sol 1,398 (at Ls 184), the pressure offered (751 Pa) was far too low based on pressure for the same Ls in MSL Years 1 and 2 (772 and 770 Pa). I expected to see about ~770 Pa. But the pressure for Sol 1399 was right back on the expected curve at 770 Pa. I don’t know if the 751 Pa for Sol 1,398 was based on a partial sol of pressure, with instrumentation just coming back on line. Maybe that will turn out to be the excuse. But the return to the exact pressure expected on Sol 1,399 was likely due to what I have seen before – manipulated data. If JPL can provide evidence to the contrary we will publish it. But the graph below and the tables that follow it illustrate what we have seen all too often before, and that’s a problem, especially for SpaceX if it wants to beat NASA in sending people to Mars. Underestimating pressures there can have catastrophic results.
| 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 | NIGHTIME CHANGE IN TEMP °C AIR TO GROUND | PRESSURE AT SAME LS IN MSL YEAR 1 | ∆ PRESSURE YEAR 1 TO YEAR 2 SAME LS | ~LS year 1 | PRESSURE YEAR 1 BEFORE REVISION | UV YR 2 | UV YR 1 | 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) | ||||||||||||
| 1334 | 148 | 732 | 5/7/2016 | -12 | -77 | -65 | 1.625 | 0 | -78 | -78 | 12 | -1 | 735 | -1 | 148 | N/A | H | H | Low Pressure for Year 1 is tied on Year 2 |
| 1335 | 149 | 732 | 5/8/2016 | -10 | -77 | -67 | 1.675 | 1 | -77 | -78 | 11 | 0 | 736 | -4 | 148 | N/A | H | H | First day over freezing since Sol 1316 , Pressure remains tied with last year's low at 732 Pa. |
| 1336 | 149 | 732 | 5/9/2016 | -12 | -75 | -63 | 1.575 | 1 | -76 | 77 | 13 | -1 | 736 | -4 | 149 | N/A | H | H | Pressure remains tied with last year's low at 732 Pa. |
| 1337 | 150 | 734 | 5/10/2016 | -13 | -76 | -63 | 1.575 | 1 | -79 | -80 | 14 | -3 | 734 | 0 | 150 | N/A | H | H | |
| 1338 | 150 | 734 | 5/11/2016 | -18 | -75 | -57 | 1.425 | 0 | -78 | -78 | 18 | -3 | 735 | -1 | 150 | N/A | H | H | |
| END OF MSL YEAR 2 | |||||||||||||||||||
| 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 | NIGHTIME 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 2 | PRESSURE YEAR 2 BEFORE REVISION | UV YR 3
| UV YR 2 | COMMENTS (AND CORRESPONDING YEAR 2 SOL NUMBER) |
| 1339 | 151 | 733 | 5/12/2016 | -18 | -77 | -59 | 1.475 | 2 | -77 | -79 | 20 | 0 | 737 | -4 | 151 | N/A | H | H | (670) |
| 1340 | 151 | 734 | 5/13/2016 | -15 | -76 | -61 | 1.525 | 3 | -77 | -80 | 18 | -1 | 740 | -6 | 151 | N/A | H | H | (671) |
| 1341 | 152 | 735 | 5/14/2016 | -9 | -76 | -67 | 1.675 | 1 | -77 | -78 | 10 | -1 | 739 | -4 | 152 | N/A | H | H | (672) |
| 1342 | 152 | 735 | 5/15/2016 | -7 | -80 | -73 | 1.825 | -4 | -77 | -73 | 3 | 3 | 738 | -3 | 152 | N/A | H | H | Largest temperature range ths winter (-73 °C) (673) |
| 1343 | 153 | 735 | 5/17/2016 | -8 | -74 | -66 | 1.65 | -6 | -71 | -65 | 2 | 3 | 734 | +1 | 153 | N/A | H | H | (674) |
| 1344 | 153 | 734 | 5/18/2016 | -14 | -75 | -61 | 1.525 | -3 | -72 | -69 | 11 | 3 | 740 | -6 | 153 | N/A | H | H | (675) |
| 1345 | 154 | 735 | 5/19/2016 | -19 | -75 | -56 | 1.4 | -1 | -74 | -73 | 18 | 1 | 738 | -3 | 154 | N/A | H | H | (676) |
| 1346 | 155 | 737 | 5/20/2016 | -16 | -75 | -59 | 1.475 | 9 | -73 | -82 | 25 | 2 | 737 | 0 | 154 | N/A | H | M | (677) |
| 1347 | 155 | 736 | 5/21/2016 | -16 | -75 | -59 | 1.475 | 9 | -85 | -94 | 25 | -10 | 739 | -3 | 155 | N/A | H | M | (678) |
| 1348 | 156 | 735 | 5/22/2016 | -15 | -76 | -61 | 1.525 | 11 | -85 | -96 | 26 | -9 | 738 | -3 | 155 | N/A | H | M | (679) |
| 1349 | 156 | 737 | 5/23/2016 | -9 | -73 | -64 | 1.6 | 10 | -84 | -94 | 19 | -11 | 740 | -3 | 156 | N/A | H | M | (680) |
| 1350 | 157 | 738 | 5/24/2016 | -9 | -73 | -64 | 1.6 | 4 | -79 | -83 | 13 | -6 | 738 | 0 | 156 | N/A | M | M | (681) |
| 1351 | 157 | 739 | 5/25/2016 | -12 | -72 | -60 | 1.5 | 4 | -79 | -83 | 16 | -7 | 739 | 0 | 157 | N/A | M | H | (682) |
| 1352 | 158 | 736 | 5/26/2016 | -6 | -73 | -67 | 1.675 | 4 | -78 | -82 | 10 | -5 | 741 | -5 | 158 | N/A | H | H | (683) |
| 1353 | 158 | 737 | 5/27/2016 | -6 | -76 | -70 | 1.75 | 12 | -75 | -87 | 18 | 1 | 741 | -4 | 158 | N/A | H | M | (684) |
| 1354 | 159 | 739 | 5/28/2016 | -5 | -75 | -70 | 1.75 | 3 | -78 | -81 | 8 | -3 | 740 | -1 | 159 | N/A | H | H | (685) |
| 1355 | 159 | 740 | 5/29/2016 | -11 | -75 | -64 | 1.6 | 4 | -78 | -82 | 15 | -3 | 738 | 2 | 159 | N/A | H | H | (686) |
| 1356 | 160 | 739 | 5/30/2016 | -5 | -74 | -69 | 1.725 | 3 | -77 | -80 | 8 | -3 | 739 | 0 | 160 | N/A | H | H | (687) |
| 1357 | 160 | 738 | 5/31/2016 | -16 | -72 | -56 | 1.4 | 3 | -79 | -82 | 19 | -7 | 741 | -3 | 160 | N/A | H | H | (688) |
| 1358 | 161 | 738 | 6/1/2016 | -16 | -74 | -58 | 1.45 | 2 | -78 | -80 | 18 | -4 | 742 | -4 | 161 | N/A | H | H | (689) |
| 1359 | 162 | 737 | 6/2/2016 | -13 | -76 | -63 | 1.575 | 2 | -76 | -78 | 15 | 0 | 741 | -4 | 161 | N/A | H | H | (690) |
| 1360 | 162 | 739 | 6/3/2016 | -16 | -76 | -60 | 1.5 | 2 | -76 | -78 | 18 | 0 | 741 | -2 | 162 | N/A | H | H | (691) |
| 1361 | 163 | 739 | 6/4/2016 | -16 | -76 | -60 | 1.5 | 1 | -77 | -78 | 17 | -1 | 742 | -3 | 162 | N/A | H | H | (692) |
| 1362 | 163 | 739 | 6/5/2016 | -17 | -74 | -57 | 1.425 | 2 | -77 | -79 | 19 | -3 | 741 | -2 | 163 | N/A | H | H | (693) |
| 1363 | 164 | 740 | 6/6/2016 | -14 | -75 | -60 | 1.5 | 3 | -77 | -80 | 17 | -2 | 740 | 0 | 164 | N/A | H | H | (694) |
| 1364 | 164 | 740 | 6/7/2016 | -16 | -74 | -58 | 1.45 | 2 | -76 | -78 | 18 | -4 | 741 | -1 | 164 | N/A | H | H | (695) |
| 1365 | 165 | 739 | 6/8/2016 | -15 | -74 | -59 | 1.475 | 3 | -75 | -78 | 18 | -1 | 743 | -4 | 165 | N/A | H | H | (696) |
| 1366 | 165 | 740 | 6/9/2016 | -15 | -75 | -60 | 1.5 | 4 | -75 | -79 | 19 | 0 | 743 | -3 | 165 | N/A | H | H | (697) |
| 1367 | 166 | 743 | 6/10/2016 | -14 | -74 | -60 | 1.5 | 2 | -76 | -78 | 16 | -2 | 743 | 0 | 166 | N/A | H | H | (698) |
| 1368 | 167 | 743 | 6/11/2016 | -16 | -74 | -58 | 1.45 | 4 | -75 | -79 | 20 | -1 | 744 | -1 | 166 | N/A | H | H | (699) |
| 1369 | 167 | 742 |
6/12/2016 | 1 | -73 | -74 | 1.85 |
3 | -76 | -79 | 2 | -3 | 745 | -3 | 167 | N/A | H | H | (700) Note: 17 degree increase in max air temp from previous sol. |
| 1370 | 168 | 744 | 6/13/2016 | -1 | -74 | -73 | 1.825 | 4 | -76 | -80 | 5 | -2 | 745 | -1 | 168 | N/A | H | H | (701) |
| 1371 | 168 | 746 | 6/14/2016 | -2 | -75 | -73 | 1.825 | 3 | -74 | -77 | 5 | 1 | 745 | 1 | 168 | N/A | H | H | (702) |
| 1372 | 169 | 744 | 6/15/2016 | -4 | -74 | -70 | 1.75 | 1 | -69 | -70 | 5 | 5 | 747 | -3 | 169 | N/A | H | H | (703) |
| 1373 | 169 | 746 | 6/16/2016 | -3 | -74 | -71 | 1.775 | 0 | -70 | -70 | 3 | 4 | 747 | -1 | 169 | N/A | H | H | (704) |
| 1374 | 170 | 748 | 6/17/2016 | -5 | -74 | -69 | 1.725 | 5 | -74 | -79 | 10 | 0 | 746 | 2 | 170 | N/A | H | H | (705) |
| 1375 | 170 | 749 | 6/18/2016 | -2 | -73 | -71 | 1.775 | 5 | 5 | -80 | 7 | -2 | 748 | 1 | 170 | N/A | H | H | (706) |
| 1376 | 171 | 749 | 6/19/2016 | 0 | -75 | -75 | 1.875 | 6 | -74 | -80 | 6 | 1 | 749 | 0 | 171 | N/A | H | H | (707) |
| 1377 | 172 | 749 | 6/20/2016 | 1 | -76 | -77 | 1.925 | 6 | -77 | -83 | 5 | -1 | 749 | 0 | 171 | N/A | H | H | (708) |
| 1378 | 172 | 751 | 6/21/2016 | 1 | -76 | -77 | 1.925 | 6 | -78 | -84 | 5 | -2 | 750 | 1 | 172 | N/A | H | H | (709) |
| 1379 | 173 | 751 | 6/23/2016 | -7 | -77 | -70 | 1.75 | 9 | -77 | -86 | 16 | 0 | 751 | 0 | 172 | N/A | H | H | (710) Odd that max air temp drops so much while max ground temp. climbs so high. |
| 1380 | 173 | 751 | 6/24/2016 | -7 | -74 | -67 | 1.675 | 10 | -77 | -87 | 17 | -3 | 751 | 0 | 173 | N/A | H | H | (711) |
| 1381 | 174 | 751 | 6/25/2016 | -8 | -73 | -65 | 1.625 | 10 | -78 | -88 | 18 | -5 | 752 | -1 | 173 | N/A | H | H | (712) |
| 1382 | 174 | 752 | 6/26/2016 | -4 | -76 | -72 | 1.8 | 11 | -77 | -88 | 15 | -1 | 754 | -2 | 174 | N/A | H | H | (713) |
| 1383 | 175 | 752 | 6/27/2016 | 3 | -73 | -76 | 1.9 | 10 | -76 | -86 | 7 | -3 | 754 | -2 | 175 | N/A | H | M | (714) |
| 1384 | 176 | 753 | 6/28/2016 | 2 | -74 | -76 | 1.9 | 7 | -74 | -81 | 5 | 0 | 755 | -2 | 175 | N/A | H | M | (715) |
| 1385 | 176 | 755 | 6/29/2016 | -3 | -75 | -72 | 1.9 | 10 | -74 | -84 | 13 | 1 | 755 | 0 | 176 | N/A | H | H | (716) |
| 1386 | 177 | 755 | 6/30/2016 | -1 | -74 | -73 | 1.825 | 10 | -77 | -87 | 11 | -3 | 756 | -1 | 176 | N/A | H | H | (717) |
| 1387 | 177 | 755 | 7/1/2016 | 2 | -74 | -76 | 1.9 | 17 | -79 | -96 | 19 | -5 | 757 | -2 | 177 | N/A | H | H | (718) |
| 1388 | 178 | 756 | 7/2/2016 | 4 | -73 | -77 | 1.925 | 18 | -81 | -99 | 14 | -8 | 758 | -2 | 178 | N/A | H | H | (719) |
| 1389 | 178 | N/A | 7/3/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 761 | N/A | 178 | N/A | N/A | H | (720) |
| 1390 | 179 | N/A | 7/4/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 761 | N/A | 179 | N/A | N/A | H | (721) |
| 1391 | 179 | N/A | 7/5/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 760 | N/A | 179 | N/A | N/A | H | (722) |
| 1392 | 180 | N/A | 7/6/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 761 | N/A | 180 | N/A | N/A | H | (723) FIRST DAY OF SPRING - NO DATA AVAILABLE AGAIN UNTIL SOL 1398 AT LS 184 |
| 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 | NIGHTIME CHANGE IN TEMP °C AIR TO GROUND | PRESSURE AT SAME LS IN MSL YEAR 1 | ∆ PRESSURE YEAR 1 TO YEAR 2 SAME LS | ~LS year 1 | PRESSURE YEAR 1 BEFORE REVISION | UV YR 2 | UV YR 1 | COMMENTS |
| 1393 | 180 | N/A | 7/7/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 763 | N/A | 181 | N/A | N/A | H | (724) |
| 1394 | 181 | N/A | 7/8/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 764 | N/A | 181 | N/A | N/A | H | (725) |
| 1395 | 181 | N/A | 7/9/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 766 | N/A | 182 | N/A | N/A | H | (726) |
| 1396 | 182 | N/A | 7/10/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 766 | N/A | 182 | N/A | N/A | H | (727) |
| 1397 | 183 | N/A | 7/11/2016 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 766 | N/A | 183 | N/A | N/A | H | (728) |
| 1398 | 184 | 751 | 7/12/2016 | 3 | -66 | 69 | 1.725 | 19 | -62 | -81 | 16 | 4 | 770 | -19 | 184 | N/A | H | H | (730 - only 1 sol at Ls 184 in Year 2) Pressure seems too low. It was last 751 Pa on Sol 1381 at Ls 174. Temps too high. Will JPL alter the data? See Figure 1 |
| 1399 | 184 | 770 | 7/13/2016 | 1 | -73 | 74 | 1.85 | 11 | -74 | -85 | 10 | -1 | 770 | 0 | 184 | N/A | H | H | (730) JPL/REMS Team puts the pressure back on tje expected curve - see Figure 1 |
| 1400 | 185 | 770 | 7/14/2016 | 3 | -73 | 76 | 1.9 | 14 | -73 | -87 | 17 | 0 | 771 | -1 | 185 | N/A | H | H | (731) |
| 1401 | 185 | 770 | 7/15/2016 | -4 | -74 | 70 | 1.75 | 14 | -74 | -88 | 18 | 0 | 773 | -3 | 185 | N/A | H | H | (732) |
| 1402 | 186 | 771 | 7/16/2016 | -11 | -75 | 64 | 1.6 | 11 | -76 | -87 | 22 | -1 | 773 | -2 | 186 | N/A | H | H | (733) |
| 1403 | 187 | 775 | 7/17/2016 | -9 | -75 | 66 | 1.65 | 11 | -76 | -87 | 20 | -1 | 776 | -1 | 186 | N/A | VH | H | (734) This is the first Very High ultraviolet radiation since Sol 940 (463 sols earlier on March 29, 2015). |
| 1404 | 187 | 774 | 7/18/2016 | -10 | -75 | 65 | 1.625 | 11 | -78 | -89 | 21 | -3 | 776 | -2 | 187 | N/A | H | H | (735) |