# # 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 = 49.544125 km # Date (UTC) = 2016-01-26T08:40:12.042 # Date (julian) = 2457413.86125048 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.3424 6.4797000e+10 0.066107017 0.033592634 122.69319 46.569538 6506.5439 5.9298263e+10 0.076321991 0.034256497 122.80545 46.408290 6508.7454 5.3787424e+10 0.086717898 0.034920359 122.91488 46.247025 6510.9469 4.8238963e+10 0.097253202 0.035584222 123.04117 46.055583 6513.1484 4.3061152e+10 0.10799853 0.036248085 123.16727 45.867821 6515.3500 3.8317868e+10 0.11897517 0.036911947 123.28246 45.706559 6517.5515 3.4492339e+10 0.13037084 0.037575810 123.39088 45.545296 6519.7530 3.1241904e+10 0.14212573 0.038239672 123.49455 45.384032 6521.9545 2.8311996e+10 0.15416593 0.038903535 123.60310 45.222797 6524.1560 2.5669920e+10 0.16034140 0.039482392 123.71185 45.060904 6526.3576 2.3274651e+10 0.16553485 0.040042942 123.81552 44.893881 6528.5591 2.1122709e+10 0.17040757 0.041885999 123.92137 44.729035 6530.7606 1.9105607e+10 0.17402851 0.044893518 124.03080 44.567769 6532.9621 1.7273811e+10 0.17777437 0.047487939 124.13283 44.406505 6535.1636 1.5646613e+10 0.17918820 0.048153312 124.23074 44.245243 6537.3652 1.4175791e+10 0.17965141 0.048857381 124.33387 44.078764 6539.5667 1.2864593e+10 0.17956919 0.050329576 124.43754 43.912715 6541.7682 1.1672707e+10 0.17767275 0.051077409 124.54121 43.751452 6543.9697 1.0639980e+10 0.17494462 0.051636400 124.64237 43.590203 6546.1712 9.7383934e+09 0.17210415 0.052605428 124.74026 43.428973 6548.3728 8.9216307e+09 0.16987163 0.053778964 124.83817 43.263709 6550.5743 8.1516264e+09 0.16772954 0.055129154 124.93608 43.096686 6552.7758 7.4092108e+09 0.16589925 0.055391498 125.03399 42.935192 6554.9773 6.7955703e+09 0.16377803 0.054852889 125.12877 42.779082 6557.1788 6.3157029e+09 0.16113745 0.053754010 125.21269 42.640859 6559.3804 5.9163587e+09 0.15808793 0.052344249 125.29824 42.496935 6561.5819 5.5568090e+09 0.15498888 0.051085943 125.39039 42.329914 6563.7834 5.1855881e+09 0.15183085 0.049022153 125.48520 42.165551 6565.9849 4.8159271e+09 0.14917763 0.047200006 125.58311 42.004285 6568.1864 4.4846814e+09 0.14734015 0.045600278 125.67684 41.843022 6570.3880 4.1683051e+09 0.14547393 0.044756802 125.76899 41.681759 6572.5895 3.8765697e+09 0.14333135 0.043892574 125.86113 41.520528 6574.7910 3.6339096e+09 0.14068958 0.042475089 125.94994 41.363860 6576.9925 3.4439199e+09 0.13767648 0.040228979 126.02892 41.220701 6579.1940 3.2794603e+09 0.13401104 0.036963824 126.10958 41.073437 6581.3956 3.1253650e+09 0.13085095 0.035476827 126.19598 40.912174 6583.5971 2.9452597e+09 0.12796849 0.034719449 126.28519 40.750911 6585.7986 2.7568260e+09 0.12497956 0.033332307 126.37735 40.589646 6588.0001 2.5944845e+09 0.12240110 0.033379889 126.45585 40.442035 6590.2016 2.4595686e+09 0.11894243 0.030686977 126.52989 40.298876 6592.4032 2.3497698e+09 0.11532653 0.027681930 126.61293 40.142530 6594.6047 2.2348709e+09 0.11221333 0.025840580 126.69932 39.981267 6596.8062 2.1066978e+09 0.10939688 0.025723608 126.78571 39.820005 6599.0077 1.9853610e+09 0.10764443 0.024930195 126.86894 39.664637 6601.2092 1.8869481e+09 0.10782019 0.027144233 126.94299 39.526413 6603.4108 1.8047968e+09 0.10670250 0.026420101 127.01856 39.381563 6605.6123 1.7252422e+09 0.10619076 0.027178703 127.09919 39.214542 6607.8138 1.6302780e+09 0.10442371 0.024100032 127.18265 39.050379 6610.0153 1.5338706e+09 0.10166225 0.024017624 127.26903 38.889145 6612.2168 1.4490430e+09 0.099549494 0.024158731 127.34233 38.745337 6614.4184 1.3824760e+09 0.098559136 0.023652253 127.41144 38.607116 6616.6199 1.3167856e+09 0.097155561 0.023379590 127.48898 38.452041 6618.8214 1.2476804e+09 0.096540173 0.024391057 127.56959 38.290826 6621.0229 1.1856027e+09 0.095760460 0.025081846 127.63878 38.152443 6623.2244 1.1264437e+09 0.094217965 0.024574981 127.70789 38.014220 6625.4260 1.0743537e+09 0.092809894 0.025905914 127.78817 37.848078 6627.6275 1.0177792e+09 0.090907395 0.025559200 127.86611 37.687772 6629.8290 9.7017092e+08 0.089562986 0.025959217 127.93522 37.549549 6632.0305 9.2888160e+08 0.087632133 0.026036006 128.00672 37.406547 6634.2321 8.8995767e+08 0.085977157 0.026343770 128.08736 37.245284 6636.4336 8.4553761e+08 0.084353617 0.026381379 128.16528 37.084021 6638.6351 7.9164751e+08 0.083208541 0.025643973 128.24014 36.922759 6640.8366 7.4998885e+08 0.083516459 0.025168291 128.31078 36.778426 6643.0381 7.1701076e+08 0.083100530 0.025198376 128.37989 36.640202 6645.2397 6.8489898e+08 0.082175146 0.025563953 128.45308 36.485664 6647.4412 6.5484397e+08 0.081287723 0.026670059 128.52794 36.324433 6649.6427 6.2220421e+08 0.080673754 0.026747767 128.59241 36.185579 6651.8442 5.9429844e+08 0.080440453 0.027131133 128.65659 36.047358 6654.0457 5.6842695e+08 0.079983173 0.028016743 128.73088 35.881868 6656.2473 5.4349574e+08 0.078366895 0.028240431 128.80350 35.720907 6658.4488 5.1811994e+08 0.077042177 0.030856990 128.86768 35.582686 6660.6503 4.9388925e+08 0.075788486 0.032217084 128.93277 35.440207 6662.8518 4.7063578e+08 0.074662219 0.032566353 129.00188 35.278941 6665.0533 4.4531083e+08 0.074159120 0.028459738 129.06877 35.128010 6667.2549 4.3054042e+08 0.073676520 0.027197071 129.13295 34.989789 6669.4564 4.1263883e+08 0.072703417 0.027886973 129.19921 34.841827 6671.6579 3.9605160e+08 0.072621592 0.026874724 129.26832 34.680564 6673.8594 3.7768197e+08 0.071878136 0.028744538 129.33405 34.535117 6676.0609 3.5877516e+08 0.069574074 0.031752998 129.39822 34.396894 6678.2625 3.4633367e+08 0.068448784 0.030761071 129.46566 34.243448 6680.4640 3.3268507e+08 0.068762108 0.029541609 129.53477 34.082186 6682.6655 3.1529048e+08 0.069320729 0.030933009 129.59476 33.942224 6684.8670 3.0184745e+08 0.069066883 0.032698089 129.65400 33.804002 6687.0685 2.8634540e+08 0.067184350 0.034304675 129.72210 33.645100 6689.2701 2.7043255e+08 0.064291332 0.033772928 129.78960 33.487596 6691.4716 2.5870299e+08 0.063110534 0.032890001 129.84884 33.349374 6693.6731 2.4760129e+08 0.061964398 0.031373174 129.90942 33.208012 6695.8746 2.3991400e+08 0.061546135 0.029698816 129.97854 33.046749 6698.0761 2.3023382e+08 0.060568155 0.030322328 130.04370 32.896679 6700.2777 2.1764684e+08 0.058682374 0.030873667 130.10294 32.763393 6702.4792 2.0990366e+08 0.057268900 0.033259358 130.16371 32.619635 6704.6807 2.0208887e+08 0.057291942 0.036511814 130.22707 32.458373 6706.8822 1.9401986e+08 0.056699258 0.039981842 130.28779 32.311810 6709.0837 1.8692812e+08 0.055759271 0.041079279 130.34703 32.173587 6711.2853 1.7980660e+08 0.053576465 0.041016783 130.40324 32.035365 6713.4868 1.7627761e+08 0.051132011 0.045447212 130.45755 31.897142 6715.6883 1.6914360e+08 0.048848986 0.048082565 130.52054 31.745404 6717.8898 1.6184680e+08 0.046316481 0.049819229 130.58966 31.584141 6720.0913 1.4890552e+08 0.044514155 0.050409183 130.65388 31.422878 6722.2929 1.4022049e+08 0.043774875 0.050243148 130.71620 31.264805 6724.4944 1.3313096e+08 0.040067133 0.045798238 130.77050 31.131519 6726.6959 1.2730131e+08 0.036730384 0.040957644 130.82560 30.995764 6728.8974 1.2587461e+08 0.036051980 0.040900044 130.88894 30.834500 6731.0989 1.1877641e+08 0.033618298 0.041946944 130.94910 30.681355 6733.3005 1.1285498e+08 0.031836554 0.045555620 131.00340 30.543157 6735.5020 1.0728005e+08 0.031983380 0.049826327 131.06064 30.397441 6737.7035 1.0349532e+08 0.033053878 0.056376601 131.12400 30.236177 6739.9050 98962729. 0.032598504 0.063934132 131.18201 30.091410 6742.1065 95884911. 0.030025136 0.068870371 131.23631 29.958125 6744.3081 90240344. 0.024888435 0.078031694 131.29247 29.809063 6746.5096 82032553. 0.020862267 0.073062758 131.35007 29.647800 6748.7111 77761542. 0.018376601 0.070758060 131.40494 29.505606 6750.9126 72795022. 0.014740150 0.073562480 131.45924 29.367384 6753.1141 72744677. 0.012110560 0.073346694 131.51619 29.215304 6755.3157 72772178. 0.010271321 0.074466945 131.57416 29.059422 6757.5172 70244593. 0.0079913237 0.075170526 131.63751 28.898158 6759.7187 66363377. 0.0079466481 0.075993391 131.69625 28.744482 6761.9202 65145356. 0.010935365 0.078044254 131.74562 28.606260 6764.1217 62465336. 0.013222971 0.079489118 131.79748 28.462791 6766.3233 59817919. 0.013151234 0.080444990 131.85508 28.307287 6768.5248 55581714. 0.0067895566 0.082744345 131.91081 28.161587 6770.7263 51090854. -0.0012250768 0.088641323 131.96511 28.023365 6772.9278 53311400. -0.0066444421 0.093980978 132.02119 27.875801 6775.1294 53602512. -0.014718629 0.099320632 132.07876 27.720329 6777.3309 50945276. -0.029941631 0.10466029 132.13636 27.560195 6779.5324 47400510. -0.090481803 0.10999994 132.19339 27.400851 6781.7339 46075521. -0.054776568 0.11533960 132.24275 27.267565 6786.1370 47082279. 0.042343659 0.12601891 132.35006 26.971815