# # 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 = 51.776683 km # Date (UTC) = 2014-01-31T18:32:40.916 # Date (julian) = 2456689.27269578 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6519.4304 2.5630323e+10 0.14088827 0.038142396 -148.49606 62.851106 6521.6806 2.3225088e+10 0.15177984 0.038820932 -148.80689 62.674498 6523.9308 2.1370898e+10 0.15732793 0.039409800 -149.17706 62.467455 6526.1809 1.9911850e+10 0.16125627 0.039857785 -149.49622 62.281299 6528.4311 1.8365596e+10 0.16512429 0.041784494 -149.81333 62.090895 6530.6813 1.6966568e+10 0.16745093 0.044782509 -150.16231 61.878106 6532.9315 1.5562728e+10 0.16974328 0.047462348 -150.45188 61.701540 6535.1817 1.4232752e+10 0.16989720 0.048145492 -150.78338 61.491167 6537.4318 1.3114451e+10 0.16958334 0.048888821 -151.08869 61.293855 6539.6820 1.2190258e+10 0.16943558 0.050469198 -151.36818 61.111724 6541.9322 1.1384984e+10 0.16805165 0.051024224 -151.63656 60.935158 6544.1824 1.0591226e+10 0.16676313 0.051792299 -151.95877 60.723186 6546.4326 9.7773293e+09 0.16570778 0.052820454 -152.24474 60.527214 6548.6827 9.0092609e+09 0.16478981 0.053871536 -152.50431 60.345338 6550.9329 8.4180623e+09 0.16381361 0.055218955 -152.75857 60.168772 6553.1831 7.9049816e+09 0.16304693 0.055243025 -153.01288 59.986258 6555.4333 7.4736227e+09 0.16132901 0.054489305 -153.26421 59.802585 6557.6835 6.9832793e+09 0.15929473 0.053437712 -153.51185 59.618619 6559.9336 6.4814281e+09 0.15676147 0.052281799 -153.82082 59.389106 6562.1838 5.9935709e+09 0.15379427 0.050704992 -154.06973 59.199617 6564.4340 5.5342123e+09 0.15109617 0.048574909 -154.30668 59.015943 6566.6842 5.1896449e+09 0.14923453 0.046795846 -154.53981 58.832273 6568.9344 4.8880470e+09 0.14750622 0.044912764 -154.77287 58.648646 6571.1845 4.6255531e+09 0.14637039 0.044452874 -155.00155 58.464989 6573.4347 4.3695896e+09 0.14474243 0.043308630 -155.22760 58.281316 6575.6849 4.1171522e+09 0.14289252 0.041687539 -155.45367 58.097645 6577.9351 3.8681095e+09 0.14093659 0.038751591 -155.67411 57.908355 6580.1853 3.6167289e+09 0.13886424 0.036349548 -155.89308 57.720315 6582.4354 3.3989288e+09 0.13696636 0.035175300 -156.11202 57.536685 6584.6856 3.2204483e+09 0.13505029 0.034142029 -156.29017 57.382518 6586.9358 3.0710681e+09 0.13303923 0.033159199 -156.47613 57.219484 6589.1860 2.9375481e+09 0.13088744 0.032677015 -156.68806 57.028746 6591.4362 2.7852790e+09 0.12824362 0.028709758 -156.89395 56.844047 6593.6863 2.6305899e+09 0.12572059 0.026464136 -157.09878 56.657339 6595.9365 2.4713565e+09 0.12266740 0.025720690 -157.30353 56.466601 6598.1867 2.3187417e+09 0.12043857 0.025318030 -157.50133 56.275864 6600.4369 2.1846734e+09 0.11939450 0.025888011 -157.67927 56.107821 6602.6871 2.0766647e+09 0.11788613 0.026930327 -157.84410 55.954765 6604.9372 1.9847577e+09 0.11616522 0.026627776 -158.03868 55.767704 6607.1874 1.8894173e+09 0.11389714 0.025336920 -158.23301 55.576992 6609.4376 1.7810491e+09 0.11013263 0.023835918 -158.42324 55.386257 6611.6878 1.6719148e+09 0.10718089 0.024519859 -158.60691 55.195519 6613.9380 1.5906597e+09 0.10609171 0.023917728 -158.77434 55.029520 6616.1881 1.5141183e+09 0.10480368 0.023311827 -158.93329 54.876464 6618.4383 1.4452272e+09 0.10435449 0.024101775 -159.10911 54.687363 6620.6885 1.3812697e+09 0.10370457 0.024989064 -159.27293 54.513876 6622.9387 1.3159786e+09 0.10238317 0.024508149 -159.42599 54.354937 6625.1889 1.2592560e+09 0.10095293 0.025622963 -159.59890 54.169188 6627.4390 1.1928817e+09 0.099065069 0.025486402 -159.77249 53.978451 6629.6892 1.1234368e+09 0.097972001 0.025984493 -159.94177 53.788097 6631.9394 1.0682764e+09 0.096164297 0.026026189 -160.08890 53.629186 6634.1896 1.0185096e+09 0.094583486 0.026340671 -160.24305 53.460317 6636.4398 9.7250444e+08 0.092938224 0.026378979 -160.41259 53.269580 6638.6899 9.2976854e+08 0.091623431 0.025641584 -160.55149 53.107375 6640.9401 8.8188611e+08 0.091931257 0.025155628 -160.69227 52.940716 6643.1903 8.4223032e+08 0.091165605 0.025221350 -160.85475 52.742914 6645.4405 8.0218370e+08 0.089792145 0.025658029 -160.99600 52.575567 6647.6907 7.6231985e+08 0.088365515 0.026801411 -161.13364 52.413985 6649.9408 7.2383486e+08 0.087215813 0.026336798 -161.29613 52.223247 6652.1910 6.8558009e+08 0.086315587 0.027303076 -161.43657 52.053763 6654.4412 6.4954488e+08 0.085084154 0.027848274 -161.56608 51.894822 6656.6914 6.1841610e+08 0.082733832 0.028630229 -161.69558 51.735880 6658.9416 5.9394398e+08 0.080666748 0.031730937 -161.83018 51.568337 6661.1917 5.6857356e+08 0.079061278 0.032632602 -161.97850 51.377646 6663.4419 5.4492732e+08 0.077674719 0.032360749 -162.11073 51.209068 6665.6921 5.1681922e+08 0.077514426 0.027413117 -162.24319 51.040191 6667.9423 4.9566645e+08 0.076923809 0.027449569 -162.39153 50.849454 6670.1924 4.7345658e+08 0.076414525 0.027239474 -162.51721 50.682268 6672.4426 4.5399064e+08 0.076140314 0.027136155 -162.63519 50.523327 6674.6928 4.3484807e+08 0.074903486 0.029539221 -162.75881 50.364386 6676.9430 4.1111740e+08 0.072673583 0.032321474 -162.88848 50.192123 6679.1932 3.9192997e+08 0.072169945 0.030108146 -163.02973 49.994370 6681.4433 3.7310774e+08 0.073211671 0.029997488 -163.14918 49.832609 6683.6935 3.5476695e+08 0.073594122 0.032204953 -163.26557 49.673667 6685.9437 3.4137095e+08 0.073024771 0.033701625 -163.37741 49.514726 6688.1939 3.2470224e+08 0.070394795 0.033829946 -163.50486 49.335195 6690.4441 3.0872567e+08 0.068587116 0.033064973 -163.64279 49.141834 6692.6942 2.9287660e+08 0.067599370 0.031959142 -163.75464 48.982893 6694.9444 2.8020751e+08 0.066874289 0.029937363 -163.86403 48.823965 6697.1946 2.7634782e+08 0.066073835 0.030115893 -163.96996 48.665055 6699.4448 2.7208548e+08 0.064427372 0.031180022 -164.09617 48.478282 6701.6950 2.6160083e+08 0.062463921 0.032429159 -164.22188 48.292174 6703.9451 2.4226847e+08 0.062597336 0.036040291 -164.32784 48.133233 6706.1953 2.2693783e+08 0.062485821 0.038786353 -164.43380 47.970748 6708.4455 2.1617435e+08 0.061901504 0.040528718 -164.53977 47.805921 6710.6957 2.0772382e+08 0.060277633 0.040632667 -164.64573 47.646410 6712.9459 1.9957300e+08 0.058195413 0.043586114 -164.75602 47.480969 6715.1960 1.8489761e+08 0.056261130 0.047579097 -164.88315 47.290278 6717.4462 1.7197814e+08 0.054285095 0.049846667 -164.98894 47.119988 6719.6964 1.6394330e+08 0.052730953 0.050708204 -165.08901 46.955691 6721.9466 1.5628231e+08 0.052992130 0.050589109 -165.18908 46.796749 6724.1968 1.5266485e+08 0.050523080 0.048283558 -165.28916 46.635504 6726.4469 1.4700126e+08 0.047089597 0.040955398 -165.38923 46.470675 6728.6971 1.4044692e+08 0.046626191 0.040616152 -165.50317 46.287905 6730.9473 1.3443743e+08 0.044935687 0.041677771 -165.61771 46.105986 6733.1975 1.2633295e+08 0.043764459 0.044996498 -165.71776 45.947075 6735.4477 1.2116143e+08 0.044421202 0.049768659 -165.81443 45.784744 6737.6978 1.1730175e+08 0.045989547 0.056358560 -165.90862 45.619914 6739.9480 1.1547337e+08 0.046009578 0.063986751 -166.00281 45.460264 6742.1982 1.1123958e+08 0.043585865 0.069093707 -166.10040 45.294313 6744.4484 1.0195997e+08 0.039228825 0.078140224 -166.21343 45.096510 6746.6986 93573443. 0.035637018 0.070865720 -166.31204 44.928431 6748.9487 90037693. 0.034569030 0.072008259 -166.40583 44.769102 6751.1989 87382585. 0.031288394 0.073795776 -166.49412 44.604308 6753.4491 88470531. 0.028773144 0.074430662 -166.58457 44.441663 6755.6993 87210985. 0.026513373 0.074298755 -166.67876 44.282721 6757.9495 80270502. 0.025555508 0.073858697 -166.78082 44.102530 6760.1996 77021326. 0.026288565 0.076441976 -166.88232 43.918340 6762.4498 70824985. 0.030730452 0.077325249 -166.97061 43.753513 6764.7000 69735772. 0.033758718 0.079516821 -167.05892 43.591947 6766.9502 67961916. 0.034181328 0.081863071 -167.14722 43.433006 6769.2004 63730068. 0.029416915 0.084940220 -167.23551 43.269059 6771.4505 62411717. 0.025524750 0.090397895 -167.32544 43.100213 6773.7007 58222138. 0.021648948 0.095855571 -167.42434 42.909476 6775.9509 57891706. 0.017759532 0.10131325 -167.51540 42.742287 6778.2011 55110924. 0.013879709 0.10677092 -167.60346 42.583099 6780.4513 52715862. 0.0099965209 0.11222860 -167.68587 42.418271 6782.7014 55440653. 0.0060704805 0.11768627 -167.77393 42.244568 6784.9516 52931461. 0.0021642452 0.12314395 -167.87281 42.053877 6787.2018 49304252. -0.0017428466 0.12860162 -167.95642 41.892625 6789.4520 46095498. -0.0056751359 0.13405930 -168.03749 41.732339 6791.7022 44333471. -0.0096520132 0.13951697 -168.11401 41.567512 6793.9523 45582585. -0.013679741 0.14497465 -168.19365 41.405803 6796.2025 46328662. -0.017761822 0.15043232 -168.27607 41.246862 6798.4527 44012285. -0.021944883 0.15589000 -168.36631 41.055627 6800.7029 42242321. -0.026299680 0.16134767 -168.45424 40.873968 6802.9531 42174822. -0.030897826 0.16680535 -168.53665 40.715027 6805.2032 39116291. -0.036713695 0.17226302 -168.61484 40.556109 6807.4534 38016353. -0.050326847 0.17772070 -168.69162 40.396515 6809.7036 39901560. -0.046575168 0.18317837 -168.78346 40.198712 6811.9538 43238756. -0.035692585 0.18863605 -168.86608 40.024307