# # 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 = 49.656243 km # Date (UTC) = 2014-12-08T10:19:45.440 # Date (julian) = 2456999.93038703 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.8940 7.0903545e+10 0.060862708 0.033457443 -34.026411 52.810871 6506.2161 6.4453223e+10 0.070538705 0.034157649 -34.147912 52.713935 6508.5381 5.8874436e+10 0.080482593 0.034857856 -34.269398 52.620796 6510.8602 5.3885410e+10 0.090721223 0.035558062 -34.390884 52.527656 6513.1822 4.9319747e+10 0.10127320 0.036258269 -34.509958 52.432104 6515.5043 4.5511159e+10 0.11230968 0.036958475 -34.627396 52.334914 6517.8263 4.2202593e+10 0.12381140 0.037658682 -34.746687 52.236190 6520.1483 3.8863832e+10 0.13559996 0.038358888 -34.878806 52.126849 6522.4704 3.5510201e+10 0.14634862 0.039040427 -35.010925 52.017509 6524.7924 3.2204436e+10 0.15263026 0.039708475 -35.129370 51.923257 6527.1145 2.9376541e+10 0.15749285 0.040799580 -35.246808 51.830118 6529.4365 2.6961091e+10 0.16117653 0.042931123 -35.362381 51.735102 6531.7586 2.4748595e+10 0.16491250 0.046332779 -35.475782 51.637901 6534.0806 2.2743661e+10 0.16693588 0.047967107 -35.589184 51.540700 6536.4027 2.0923182e+10 0.16774177 0.048150767 -35.702571 51.443511 6538.7247 1.9299866e+10 0.16912489 0.049509571 -35.815957 51.346321 6541.0467 1.7844417e+10 0.16928025 0.051311369 -35.929345 51.251251 6543.3688 1.6573536e+10 0.16883042 0.051478684 -36.042733 51.158112 6545.6908 1.5387453e+10 0.16760790 0.052461756 -36.156641 51.064098 6548.0129 1.4164395e+10 0.16648601 0.053671492 -36.279646 50.954760 6550.3349 1.2973002e+10 0.16487157 0.055069221 -36.402651 50.845422 6552.6570 1.1847691e+10 0.16307426 0.055421408 -36.513929 50.746507 6554.9790 1.0886513e+10 0.16120886 0.054852924 -36.623281 50.649305 6557.3011 1.0090237e+10 0.15890458 0.053677403 -36.731049 50.552107 6559.6231 9.3832884e+09 0.15646202 0.052316850 -36.836338 50.454918 6561.9451 8.7476751e+09 0.15394972 0.050906933 -36.941627 50.357728 6564.2672 8.1621241e+09 0.15126132 0.048650506 -37.050643 50.260540 6566.5892 7.6209183e+09 0.14944689 0.046849555 -37.159981 50.163351 6568.9113 7.1034134e+09 0.14773881 0.044933977 -37.271374 50.060682 6571.2333 6.5710428e+09 0.14663760 0.044439549 -37.385270 49.951342 6573.5554 6.0759225e+09 0.14496525 0.043211809 -37.496961 49.845113 6575.8774 5.6506354e+09 0.14294658 0.041494384 -37.602248 49.747925 6578.1995 5.2364327e+09 0.14080837 0.038334642 -37.707536 49.650737 6580.5215 4.8610240e+09 0.13847806 0.036038806 -37.809649 49.556724 6582.8436 4.5090178e+09 0.13657595 0.035064241 -37.910901 49.463572 6585.1656 4.2348180e+09 0.13435402 0.033838383 -38.012148 49.369139 6587.4876 4.1028818e+09 0.13169762 0.033266412 -38.113387 49.271949 6589.8097 3.9355064e+09 0.12887302 0.031439636 -38.214626 49.174759 6592.1317 3.6883093e+09 0.12567883 0.027945577 -38.326599 49.067264 6594.4538 3.4072738e+09 0.12257511 0.025923423 -38.440494 48.957924 6596.7758 3.1244111e+09 0.11933120 0.025723746 -38.543478 48.856521 6599.0979 2.8795958e+09 0.11714955 0.024935616 -38.640668 48.759332 6601.4199 2.7255034e+09 0.11693740 0.027243443 -38.737860 48.661398 6603.7420 2.5434961e+09 0.11591637 0.026224039 -38.835061 48.560146 6606.0640 2.4179099e+09 0.11567350 0.027388960 -38.932262 48.458894 6608.3860 2.3051729e+09 0.11324637 0.023722165 -39.029455 48.360545 6610.7081 2.1835193e+09 0.11021288 0.024679541 -39.126644 48.263355 6613.0301 2.1006344e+09 0.10884128 0.023584646 -39.225696 48.163186 6615.3522 1.9862267e+09 0.10754530 0.023262367 -39.330480 48.053848 6617.6742 1.8392895e+09 0.10683677 0.023662786 -39.434678 47.945120 6619.9963 1.7163986e+09 0.10638752 0.024766297 -39.527817 47.847930 6622.3183 1.6268034e+09 0.10498701 0.024673268 -39.620957 47.750740 6624.6404 1.5606541e+09 0.10306480 0.025205090 -39.714096 47.653551 6626.9624 1.5377937e+09 0.10043602 0.025364714 -39.807235 47.556363 6629.2844 1.4697248e+09 0.098944982 0.026057676 -39.901672 47.457822 6631.6065 1.3500973e+09 0.097227012 0.025992373 -40.006455 47.348481 6633.9285 1.2593726e+09 0.095519618 0.026314366 -40.111238 47.239141 6636.2506 1.1822935e+09 0.093706522 0.026452442 -40.201651 47.140925 6638.5726 1.1480170e+09 0.091927308 0.025646695 -40.290753 47.043725 6640.8947 1.1212253e+09 0.091607534 0.025161188 -40.386870 46.941093 6643.2167 1.0224403e+09 0.090976681 0.025225340 -40.491654 46.831753 6645.5388 9.3750088e+08 0.089620912 0.025704074 -40.591456 46.724456 6647.8608 8.7368126e+08 0.088212368 0.026890998 -40.676496 46.623218 6650.1828 8.4646015e+08 0.086993658 0.026297096 -40.761536 46.521980 6652.5049 8.3794327e+08 0.086138011 0.027389438 -40.849747 46.423911 6654.8269 8.2338850e+08 0.084991284 0.027683942 -40.938837 46.326721 6657.1490 7.9936827e+08 0.083012977 0.029073928 -41.029991 46.225723 6659.4710 7.6562489e+08 0.081540226 0.031736341 -41.125662 46.116385 6661.7931 7.3050765e+08 0.080131873 0.032938879 -41.220075 46.008485 6664.1151 6.9445502e+08 0.078830322 0.031784874 -41.305127 45.911282 6666.4372 6.6537406e+08 0.078845128 0.026993782 -41.390179 45.814079 6668.7592 6.3946799e+08 0.077645516 0.028142620 -41.482128 45.708995 6671.0813 6.0756360e+08 0.077617468 0.026866506 -41.577801 45.599657 6673.4033 5.7431288e+08 0.077101763 0.028062379 -41.668643 45.495839 6675.7253 5.4171734e+08 0.074999632 0.031187655 -41.753683 45.398649 6678.0474 5.1766518e+08 0.073652479 0.030904919 -41.838722 45.301459 6680.3694 4.9598594e+08 0.073877143 0.029521192 -41.929748 45.187815 6682.6915 4.7407358e+08 0.074507276 0.030952858 -42.020864 45.073920 6685.0135 4.5172012e+08 0.074337514 0.032719120 -42.107181 44.973223 6687.3356 4.3468356e+08 0.072207693 0.034155751 -42.192221 44.876034 6689.6576 4.2200433e+08 0.069498375 0.033424068 -42.279213 44.774945 6691.9797 4.0569467e+08 0.068216311 0.032770129 -42.370343 44.665589 6694.3017 3.8280767e+08 0.067220782 0.030838177 -42.460898 44.556235 6696.6237 3.5966645e+08 0.066811123 0.029934939 -42.547458 44.446896 6698.9458 3.3962175e+08 0.065396173 0.031516024 -42.634017 44.337558 6701.2678 3.2407737e+08 0.063390826 0.031802437 -42.715393 44.235760 6703.5899 3.0929084e+08 0.063282885 0.035151303 -42.796384 44.134521 6705.9119 2.9427870e+08 0.063379102 0.038289825 -42.879945 44.029544 6708.2340 2.8089492e+08 0.063046733 0.040298363 -42.966505 43.920204 6710.5560 2.6332664e+08 0.061672529 0.040605328 -43.053065 43.810864 6712.8781 2.5148568e+08 0.059560977 0.043460222 -43.139627 43.701523 6715.2001 2.3844328e+08 0.057479219 0.047583249 -43.225501 43.593051 6717.5221 2.2700187e+08 0.055299993 0.049841971 -43.302442 43.495863 6719.8442 2.1555283e+08 0.053760597 0.050567793 -43.379382 43.398675 6722.1662 2.0398794e+08 0.053756321 0.050399690 -43.462122 43.291418 6724.4883 1.9611805e+08 0.050470049 0.045849181 -43.548695 43.177506 6726.8103 1.8874716e+08 0.047480411 0.040958676 -43.635263 43.065457 6729.1324 1.8302916e+08 0.046891644 0.040957197 -43.721824 42.956116 6731.4544 1.7302075e+08 0.044880238 0.042654400 -43.807418 42.846777 6733.7765 1.6356168e+08 0.043557261 0.048139950 -43.889423 42.737438 6736.0985 1.5417477e+08 0.045035748 0.050727420 -43.971265 42.628316 6738.4206 1.4960444e+08 0.046077390 0.059636425 -44.044161 42.531120 6740.7426 1.4612606e+08 0.045135341 0.065318962 -44.117053 42.433931 6743.0646 1.4244769e+08 0.041308398 0.071483513 -44.194938 42.327587 6745.3867 1.3651698e+08 0.038065508 0.078729446 -44.276943 42.213692 6747.7087 1.2957916e+08 0.033591955 0.067117172 -44.358947 42.101405 6750.0308 1.2259859e+08 0.030885436 0.072056684 -44.440950 41.992067 6752.3528 1.1570838e+08 0.027973545 0.073726196 -44.522234 41.882728 6754.6749 1.1021386e+08 0.026370128 0.075128202 -44.599684 41.773388 6756.9969 1.0602113e+08 0.023418247 0.076732107 -44.677134 41.664047 6759.3190 1.0542037e+08 0.024546856 0.075896924 -44.758970 41.554707 6761.6410 99309527. 0.026998809 0.078021184 -44.840974 41.445367 6763.9630 92505326. 0.031062604 0.079370739 -44.919488 41.336015 6766.2851 88816099. 0.032496195 0.080358626 -44.996948 41.226661 6768.6071 85433747. 0.028343366 0.083040639 -45.074402 41.114703 6770.9292 83081519. 0.023808996 0.089133369 -45.151851 41.000808 6773.2512 76701771. 0.019392689 0.094765349 -45.229300 40.888636 6775.5733 70091200. 0.014846306 0.10039733 -45.306748 40.779296 6777.8953 67649108. 0.010308371 0.10602931 -45.384196 40.669956 6780.2174 67671348. 0.0056601921 0.11166129 -45.461646 40.560617 6782.5394 67221629. 0.00056741133 0.11729327 -45.539096 40.451278 6784.8614 62609668. -0.0065572179 0.12292525 -45.622336 40.326498 6787.1835 57200295. -0.028516124 0.12855723 -45.705247 40.202285 6789.5055 53038587. -0.019039319 0.13418921 -45.782694 40.088390 6791.8276 52284018. 0.010462901 0.13982119 -45.860142 39.974494