# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 51.543943 km # Date (UTC) = 2017-01-22T10:59:27.820 # Date (julian) = 2457775.95796088 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6511.4772 4.2624186e+10 0.10450888 0.035744118 88.906291 43.650924 6514.1371 3.8608308e+10 0.11754491 0.036546209 89.030102 43.458727 6516.7970 3.4876194e+10 0.13079698 0.037348301 89.144811 43.276189 6519.4569 3.1252187e+10 0.14421742 0.038150392 89.246205 43.109187 6522.1168 2.7886949e+10 0.15750901 0.038947847 89.365842 42.920908 6524.7768 2.5051567e+10 0.16449442 0.039702907 89.485210 42.735224 6527.4367 2.2430346e+10 0.16943180 0.041033503 89.592570 42.568220 6530.0966 2.0073248e+10 0.17359284 0.043963929 89.707056 42.383083 6532.7565 1.8064479e+10 0.17628420 0.047316180 89.821733 42.194209 6535.4164 1.6222634e+10 0.17682996 0.048043650 89.923126 42.027208 6538.0764 1.4562299e+10 0.17734985 0.049193860 90.033607 41.845236 6540.7363 1.3124258e+10 0.17689183 0.051201935 90.150202 41.653194 6543.3962 1.1852902e+10 0.17551066 0.051485875 90.251595 41.486192 6546.0561 1.0694914e+10 0.17354524 0.052510694 90.357206 41.304436 6548.7160 9.6925334e+09 0.17197391 0.053881476 90.468547 41.102635 6551.3759 8.7747949e+09 0.16960856 0.055367714 90.564182 40.935178 6554.0359 8.0071576e+09 0.16570969 0.054833133 90.661463 40.768177 6556.6958 7.3949963e+09 0.16057633 0.053910833 90.762860 40.601175 6559.3557 6.7849908e+09 0.15436151 0.052347033 90.870555 40.416531 6562.0156 6.1828067e+09 0.14861194 0.050865040 90.977590 40.227162 6564.6755 5.6021805e+09 0.14383779 0.048465443 91.067057 40.060160 6567.3355 5.1089400e+09 0.14084049 0.046333550 91.159623 39.893158 6569.9954 4.7126357e+09 0.13855215 0.044917208 91.255051 39.726156 6572.6553 4.3759254e+09 0.13585532 0.043854885 91.350482 39.559153 6575.3152 4.0406140e+09 0.13292559 0.042058449 91.447403 39.387514 6577.9751 3.7092941e+09 0.12978895 0.038688676 91.551763 39.192711 6580.6351 3.3884505e+09 0.12655530 0.035933874 91.645259 39.018187 6583.2950 3.1017631e+09 0.12397135 0.034872366 91.734725 38.851186 6585.9549 2.8727351e+09 0.12098688 0.033207362 91.824188 38.684184 6588.6148 2.6696681e+09 0.11855106 0.033174614 91.913651 38.517181 6591.2747 2.4817630e+09 0.11514012 0.028891914 92.003118 38.350177 6593.9346 2.2906618e+09 0.11193050 0.026233285 92.103017 38.163701 6596.5946 2.1026800e+09 0.10835334 0.025724571 92.201917 37.976167 6599.2545 1.9225600e+09 0.10583980 0.024945036 92.285418 37.809165 6601.9144 1.7709587e+09 0.10500881 0.027476321 92.368919 37.642162 6604.5743 1.6444435e+09 0.10291685 0.026412288 92.452420 37.475158 6607.2342 1.5280883e+09 0.10081938 0.025244463 92.541344 37.308157 6609.8942 1.4304597e+09 0.096440189 0.023971538 92.629423 37.141155 6612.5541 1.3394992e+09 0.093096675 0.023906768 92.712924 36.974153 6615.2140 1.2482852e+09 0.090838799 0.023258116 92.804164 36.791672 6617.8739 1.1578824e+09 0.088952801 0.023728992 92.899929 36.600140 6620.5338 1.0650346e+09 0.087764107 0.024939224 92.983430 36.433138 6623.1938 9.8812063e+08 0.086108588 0.024563607 93.064294 36.266136 6625.8537 9.2313860e+08 0.084898610 0.026416288 93.141834 36.099134 6628.5136 8.5867948e+08 0.083441128 0.025911617 93.223938 35.932131 6631.1735 7.9839878e+08 0.081989944 0.025948391 93.306907 35.765128 6633.8334 7.4016972e+08 0.080781582 0.026297760 93.384442 35.598126 6636.4933 6.9033368e+08 0.079505078 0.026358167 93.464438 35.433584 6639.1533 6.4874019e+08 0.078705026 0.025573295 93.547939 35.272546 6641.8132 6.0523883e+08 0.079681949 0.025151062 93.627050 35.107119 6644.4731 5.6898199e+08 0.078882378 0.025394738 93.704586 34.940117 6647.1330 5.3351467e+08 0.077869371 0.026507815 93.782126 34.773113 6649.7929 4.9788479e+08 0.077108633 0.026540663 93.864608 34.595460 6652.4529 4.6704286e+08 0.076751195 0.027375120 93.955068 34.400619 6655.1128 4.3141799e+08 0.075728462 0.027656815 94.033308 34.232101 6657.7727 4.0015274e+08 0.073873850 0.029797411 94.109237 34.066710 6660.4326 3.7348393e+08 0.072278773 0.032019221 94.180799 33.905699 6663.0925 3.4843720e+08 0.070867568 0.032457570 94.255897 33.741142 6665.7524 3.3141472e+08 0.070324000 0.027314215 94.333432 33.574139 6668.4124 3.1542553e+08 0.069325825 0.027835691 94.405511 33.407136 6671.0723 2.9825108e+08 0.069034175 0.026866378 94.478508 33.240133 6673.7322 2.8226801e+08 0.068293008 0.028554285 94.556043 33.073131 6676.3921 2.6372818e+08 0.065743548 0.031966446 94.630228 32.909482 6679.0520 2.4771180e+08 0.064802534 0.030224765 94.701802 32.748444 6681.7120 2.3495018e+08 0.066201285 0.030203564 94.773376 32.582125 6684.3719 2.1874525e+08 0.066798080 0.032672963 94.844949 32.415123 6687.0318 2.0325689e+08 0.065508627 0.034325165 94.916519 32.248118 6689.6917 1.8552608e+08 0.063083228 0.033393367 94.994441 32.070002 6692.3516 1.6728789e+08 0.062323531 0.032356994 95.076811 31.884107 6695.0116 1.5608098e+08 0.061903444 0.029857351 95.148385 31.717106 6697.6715 1.4745370e+08 0.061361224 0.030176241 95.219957 31.550104 6700.3314 1.3593010e+08 0.059700796 0.030913522 95.291526 31.383101 6702.9913 1.3085556e+08 0.058892726 0.033668297 95.358673 31.220524 6705.6512 1.2726228e+08 0.059014899 0.037826362 95.424671 31.059097 6708.3111 1.2041830e+08 0.058635168 0.040382408 95.496245 30.892095 6710.9711 1.1613128e+08 0.056805066 0.040686569 95.565501 30.727411 6713.6310 1.0578597e+08 0.054301696 0.045968765 95.631109 30.566372 6716.2909 99173465. 0.052044425 0.048829836 95.700962 30.401086 6718.9508 1.0187226e+08 0.049027655 0.051293250 95.772708 30.233344 6721.6107 99200042. 0.049283291 0.050487919 95.849253 30.045461 6724.2707 96349237. 0.046394301 0.047666468 95.919255 29.870073 6726.9306 92822766. 0.042638647 0.040959760 95.984863 29.703071 6729.5905 86727881. 0.041653377 0.040651845 96.050471 29.541566 6732.2504 85889297. 0.039466220 0.043786310 96.116080 29.379066 6734.9103 79953836. 0.039022302 0.049298827 96.181689 29.212062 6737.5703 77402342. 0.040783778 0.055952125 96.247297 29.048451 6740.2302 72946693. 0.040445446 0.064443573 96.312905 28.887414 6742.8901 67311856. 0.036469145 0.070779628 96.388268 28.696227 6745.5500 66429754. 0.032813958 0.078798106 96.459839 28.516760 6748.2099 57197726. 0.027893800 0.068121345 96.525448 28.355721 6750.8698 55069898. 0.024711071 0.073489431 96.591056 28.194683 6753.5298 51396880. 0.021063716 0.074691711 96.656057 28.033043 6756.1897 50329397. 0.017865816 0.074654997 96.715690 27.866068 6758.8496 51494542. 0.017779207 0.075501922 96.782505 27.690215 6761.5095 49014012. 0.019362974 0.078010321 96.859050 27.502332 6764.1694 48960247. 0.023910756 0.079491403 96.918903 27.340961 6766.8294 49246642. 0.024493247 0.081589775 96.978546 27.179923 6769.4893 52715031. 0.019134646 0.085640977 97.038188 27.018885 6772.1492 52608648. 0.013821079 0.092092449 97.108553 26.836405 6774.8091 50982336. 0.0080158673 0.098543922 97.181764 26.648232 6777.4690 44711858. 0.00054366381 0.10499539 97.241407 26.487194 6780.1290 43498032. -0.0065307115 0.11144687 97.301052 26.326156 6782.7889 43708623. -0.014470203 0.11789834 97.360700 26.165116 6785.4488 41545099. -0.027523959 0.12434981 97.428735 25.981421 6788.1087 41073449. -0.075548767 0.13080128 97.494274 25.804464 6790.7686 36686536. -0.050408716 0.13725276 97.553916 25.643426 6793.4285 36485356. 0.032606360 0.14370423 97.620821 25.457699