# # 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 = 51.948782 km # Date (UTC) = 2015-01-12T10:02:56.315 # Date (julian) = 2457034.91870735 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.3253 2.2896056e+11 0.033060501 0.030572017 -29.430583 51.468351 6496.9408 1.7747208e+11 0.042911578 0.031360725 -29.569158 51.340041 6499.5564 1.3767273e+11 0.052354507 0.032149433 -29.725962 51.194852 6502.1719 1.0776869e+11 0.061318087 0.032938141 -29.880023 51.051091 6504.7874 8.6002839e+10 0.069856843 0.033726849 -30.018578 50.917667 6507.4030 7.1304249e+10 0.078199988 0.034515557 -30.157132 50.785618 6510.0185 6.1120005e+10 0.086703474 0.035304265 -30.295686 50.657328 6512.6340 5.3018051e+10 0.095634836 0.036092973 -30.432601 50.529037 6515.2496 4.6559393e+10 0.10528388 0.036881681 -30.566023 50.400746 6517.8651 4.1239620e+10 0.11593413 0.037670389 -30.699446 50.272455 6520.4807 3.6817668e+10 0.12783394 0.038459098 -30.832869 50.144164 6523.0962 3.2801571e+10 0.13782450 0.039202954 -30.971860 50.005666 6525.7117 2.9045335e+10 0.14370234 0.039700986 -31.118481 49.853181 6528.3273 2.5646918e+10 0.15003841 0.041702105 -31.251963 49.718039 6530.9428 2.2717880e+10 0.15524235 0.045148606 -31.380254 49.589748 6533.5583 2.0384691e+10 0.16154807 0.047756865 -31.508544 49.461457 6536.1739 1.8418597e+10 0.16496081 0.047946074 -31.636835 49.333166 6538.7894 1.6687875e+10 0.16924340 0.049541084 -31.765126 49.200669 6541.4049 1.5140141e+10 0.17085402 0.051195207 -31.893417 49.067245 6544.0205 1.3739777e+10 0.17014995 0.051660967 -32.017240 48.938291 6546.6360 1.2477450e+10 0.16870497 0.052987870 -32.140400 48.810000 6549.2516 1.1347970e+10 0.16641241 0.054222639 -32.263576 48.676960 6551.8671 1.0346295e+10 0.16482096 0.055540115 -32.386752 48.543519 6554.4826 9.4542010e+09 0.16249304 0.054842508 -32.504915 48.415092 6557.0982 8.6673996e+09 0.16037815 0.053804575 -32.622943 48.286673 6559.7137 7.9666285e+09 0.15774625 0.052306624 -32.740970 48.153249 6562.3292 7.3443882e+09 0.15492866 0.050566618 -32.858998 48.020217 6564.9448 6.8105545e+09 0.15242921 0.048343424 -32.977027 47.891926 6567.5603 6.2849771e+09 0.15029157 0.046143427 -33.097207 47.760549 6570.1759 5.7613737e+09 0.14880226 0.044844666 -33.232098 47.608064 6572.7914 5.2445754e+09 0.14704108 0.043776949 -33.359865 47.465801 6575.4069 4.7855760e+09 0.14482982 0.041966435 -33.477893 47.337509 6578.0225 4.4150191e+09 0.14216653 0.038614148 -33.593488 47.206787 6580.6380 4.1003567e+09 0.13910871 0.035931152 -33.706383 47.073363 6583.2535 3.8248935e+09 0.13648336 0.034893339 -33.819278 46.942635 6585.8691 3.5710275e+09 0.13340188 0.033275972 -33.932175 46.814344 6588.4846 3.3507897e+09 0.13065067 0.033218095 -34.042113 46.683096 6591.1001 3.1460205e+09 0.12672923 0.029088911 -34.149877 46.549674 6593.7157 2.9522039e+09 0.12289000 0.026436857 -34.260863 46.419473 6596.3312 2.7695356e+09 0.11824497 0.025725768 -34.373759 46.291182 6598.9468 2.6053229e+09 0.11447439 0.024955153 -34.483182 46.159394 6601.5623 2.4537562e+09 0.11330305 0.027310496 -34.590962 46.025952 6604.1778 2.3110715e+09 0.11130795 0.026176863 -34.698732 45.896274 6606.7934 2.1731410e+09 0.11058228 0.026078319 -34.806497 45.767983 6609.4089 2.0442251e+09 0.10738981 0.023827393 -34.910248 45.635679 6612.0244 1.9257834e+09 0.10474065 0.024302495 -35.012880 45.502255 6614.6400 1.8158403e+09 0.10376839 0.023499578 -35.119789 45.368833 6617.2555 1.7131026e+09 0.10241721 0.023523962 -35.227555 45.235411 6619.8710 1.6151992e+09 0.10182600 0.024736083 -35.330779 45.106528 6622.4866 1.5273123e+09 0.10033975 0.024628481 -35.433410 44.978237 6625.1021 1.4431810e+09 0.098590359 0.025519460 -35.536043 44.845143 6627.7177 1.3663371e+09 0.096367085 0.025594028 -35.638676 44.711719 6630.3332 1.2912321e+09 0.094590606 0.025929123 -35.741309 44.578298 6632.9487 1.2157681e+09 0.092658638 0.026146105 -35.843745 44.445073 6635.5643 1.1502236e+09 0.090548435 0.026484407 -35.941245 44.316783 6638.1798 1.0894169e+09 0.088837563 0.025663809 -36.038746 44.188031 6640.7953 1.0383053e+09 0.088521419 0.025173342 -36.136248 44.054607 6643.4109 9.8246834e+08 0.087487322 0.025254655 -36.235716 43.919322 6646.0264 9.1998803e+08 0.085803019 0.025933817 -36.347147 43.772701 6648.6419 8.5879534e+08 0.084074613 0.027394004 -36.452511 43.631825 6651.2575 8.0334964e+08 0.083035106 0.026681487 -36.550026 43.498384 6653.8730 7.6173510e+08 0.081753905 0.027971393 -36.647535 43.364951 6656.4886 7.2056612e+08 0.079150715 0.028452218 -36.745037 43.231528 6659.1041 6.8644529e+08 0.076905866 0.031812885 -36.839773 43.100870 6661.7196 6.4794172e+08 0.075275805 0.032901471 -36.932143 42.972579 6664.3352 6.1473796e+08 0.074060220 0.030979741 -37.027541 42.841260 6666.9507 5.8447110e+08 0.074093949 0.027093851 -37.125041 42.707838 6669.5662 5.5215423e+08 0.073244125 0.027774139 -37.219251 42.574416 6672.1818 5.2273372e+08 0.073255990 0.026984958 -37.311620 42.440995 6674.7973 4.9072823e+08 0.072058184 0.029627373 -37.403990 42.311127 6677.4128 4.6331586e+08 0.069903187 0.031771315 -37.496359 42.182837 6680.0284 4.3969032e+08 0.070108631 0.029447545 -37.584910 42.050727 6682.6439 4.1664076e+08 0.071028020 0.030916521 -37.672146 41.917304 6685.2595 3.9470262e+08 0.070917527 0.032978886 -37.773963 41.773382 6687.8750 3.7467779e+08 0.068489324 0.033854909 -37.877876 41.627952 6690.4905 3.5376669e+08 0.066283947 0.033059649 -37.965115 41.494531 6693.1061 3.3392677e+08 0.065228011 0.031567702 -38.052353 41.361109 6695.7216 3.1223839e+08 0.064669519 0.029726924 -38.139590 41.227686 6698.3371 2.9334612e+08 0.063623753 0.030680576 -38.226830 41.095248 6700.9527 2.7718344e+08 0.061431411 0.031374343 -38.314081 40.966939 6703.5682 2.6268441e+08 0.061096414 0.035097077 -38.401329 40.837379 6706.1837 2.5195231e+08 0.060990660 0.038766200 -38.488566 40.703957 6708.7993 2.4094857e+08 0.060287351 0.040913969 -38.577756 40.566631 6711.4148 2.2870930e+08 0.058123439 0.041164183 -38.671594 40.420009 6714.0304 2.1442331e+08 0.055501984 0.047305691 -38.761533 40.281184 6716.6459 1.9919757e+08 0.053422763 0.049352700 -38.848772 40.147760 6719.2614 1.8585527e+08 0.051088112 0.051121463 -38.932715 40.014338 6721.8770 1.8169308e+08 0.051545102 0.050568133 -39.014821 39.880917 6724.4925 1.7530721e+08 0.048372152 0.045813959 -39.105061 39.738344 6727.1080 1.7015521e+08 0.045534457 0.040816449 -39.198893 39.591729 6729.7236 1.6157775e+08 0.044854916 0.040563147 -39.281142 39.458146 6732.3391 1.5382253e+08 0.043136637 0.043802638 -39.363248 39.324927 6734.9546 1.4908538e+08 0.043155760 0.049296161 -39.445355 39.196636 6737.5702 1.4308571e+08 0.045241812 0.055951899 -39.527994 39.066146 6740.1857 1.4061432e+08 0.045288405 0.064367632 -39.615965 38.913659 6742.8013 1.3323271e+08 0.041928614 0.070563164 -39.701675 38.770506 6745.4168 1.2818131e+08 0.038393563 0.078742103 -39.783783 38.642216 6748.0323 1.2191763e+08 0.034302846 0.067186985 -39.868453 38.503350 6750.6479 1.1141156e+08 0.031679401 0.073110388 -39.956425 38.350865 6753.2634 1.0740950e+08 0.028814481 0.073829707 -40.036347 38.216090 6755.8789 1.0154821e+08 0.026289971 0.074219987 -40.113322 38.087800 6758.4945 96998045. 0.025839433 0.074750956 -40.190296 37.955488 6761.1100 93420243. 0.026811357 0.077977314 -40.267270 37.822064 6763.7255 85859359. 0.032691795 0.078647436 -40.353424 37.677625 6766.3411 85479331. 0.034520152 0.080485286 -40.441398 37.530244 6768.9566 81912871. 0.029700749 0.084298173 -40.529371 37.377759 6771.5722 80123241. 0.025045993 0.090692873 -40.612675 37.235544 6774.1877 77694395. 0.020454695 0.097036699 -40.689649 37.107253 6776.8032 68348439. 0.015947856 0.10338052 -40.769065 36.967450 6779.4188 65847353. 0.011426418 0.10972435 -40.851173 36.814962 6782.0343 61474578. 0.0069332828 0.11606818 -40.929325 36.681123 6784.6498 59733558. 0.0024212984 0.12241200 -41.006300 36.552832 6787.2654 61556021. -0.0021232826 0.12875583 -41.087494 36.404653 6789.8809 57109755. -0.0066255380 0.13509965 -41.169602 36.252854 6792.4964 54398215. -0.011151988 0.14144348 -41.251709 36.106233 6795.1120 52985994. -0.015702871 0.14778731 -41.329593 35.967154 6797.7275 52138218. -0.020554708 0.15413113 -41.401447 35.838844 6800.3431 50777709. -0.026776609 0.16047496 -41.478053 35.699329 6802.9586 49821338. -0.029872748 0.16681878 -41.560163 35.546841 6805.5741 46853736. -0.031280966 0.17316261 -41.637813 35.398821