# # 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 = 45.029752 km # Date (UTC) = 2010-12-16T20:10:19.162 # Date (julian) = 2455547.34049956 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.3200 1.2590505e+11 0.083794775 0.034490547 -51.116135 35.580919 6509.8767 1.0302530e+11 0.095313381 0.035261508 -51.040340 35.460533 6512.4334 8.5414545e+10 0.10699649 0.036032468 -50.968968 35.340131 6514.9901 7.2448148e+10 0.11900511 0.036803429 -50.897619 35.219729 6517.5468 6.2345696e+10 0.13136644 0.037574389 -50.826277 35.102698 6520.1034 5.4307747e+10 0.14412620 0.038345349 -50.754937 34.986771 6522.6601 4.7382673e+10 0.15537417 0.039090112 -50.681606 34.860889 6525.2168 4.1224421e+10 0.16173351 0.039757471 -50.606363 34.725452 6527.7735 3.5875269e+10 0.16626705 0.041278032 -50.533136 34.597793 6530.3302 3.1427940e+10 0.17012242 0.044290925 -50.461797 34.477407 6532.8868 2.7898741e+10 0.17325780 0.047425061 -50.390457 34.358242 6535.4435 2.4932023e+10 0.17409046 0.048031895 -50.319117 34.242316 6538.0002 2.2393265e+10 0.17511225 0.049156783 -50.247916 34.126250 6540.5569 2.0205333e+10 0.17522882 0.051117192 -50.181025 34.005848 6543.1136 1.8296599e+10 0.17408745 0.051411701 -50.114135 33.885446 6545.6703 1.6649707e+10 0.17240186 0.052461572 -50.047252 33.765056 6548.2269 1.5167645e+10 0.17050069 0.053735416 -49.980373 33.644670 6550.7836 1.3758281e+10 0.16718881 0.055181570 -49.908927 33.518807 6553.3403 1.2402342e+10 0.16345788 0.055164004 -49.833684 33.388388 6555.8970 1.1149402e+10 0.15887182 0.054099689 -49.763060 33.263510 6558.4537 1.0084201e+10 0.15512708 0.052852731 -49.696180 33.143124 6561.0103 9.2096901e+09 0.15110832 0.051367585 -49.629297 33.024113 6563.5670 8.4654936e+09 0.14782797 0.049272454 -49.562406 32.908169 6566.1237 7.7781658e+09 0.14472596 0.047112906 -49.495516 32.791928 6568.6804 7.1551670e+09 0.14242839 0.045146228 -49.428634 32.671542 6571.2371 6.5763117e+09 0.14036610 0.044438528 -49.361753 32.551156 6573.7937 6.0573903e+09 0.13769973 0.043020520 -49.294872 32.434446 6576.3504 5.5881507e+09 0.13494756 0.040968045 -49.227992 32.318519 6578.9071 5.1293095e+09 0.13160820 0.037217186 -49.159166 32.191248 6581.4638 4.6852705e+09 0.12882866 0.035456167 -49.088941 32.055812 6584.0205 4.2639871e+09 0.12611602 0.034504361 -49.023302 31.931845 6586.5772 3.9006674e+09 0.12357071 0.033163835 -48.960878 31.815917 6589.1338 3.5896402e+09 0.12089763 0.032780467 -48.896913 31.698446 6591.6905 3.3212104e+09 0.11751053 0.028422747 -48.830024 31.578044 6594.2472 3.0789838e+09 0.11405314 0.026036826 -48.763594 31.458101 6596.8039 2.8679255e+09 0.11017233 0.025723619 -48.701172 31.342174 6599.3606 2.6762567e+09 0.10732247 0.024951416 -48.638749 31.226246 6601.9172 2.4801321e+09 0.10604629 0.027477657 -48.569617 31.093545 6604.4739 2.2798597e+09 0.10367835 0.026352673 -48.499391 30.958109 6607.0306 2.0911004e+09 0.10155139 0.025646573 -48.435924 30.839573 6609.5873 1.9296749e+09 0.097217844 0.023880381 -48.373501 30.723646 6612.1440 1.8012232e+09 0.093983379 0.024213189 -48.313854 30.607709 6614.7006 1.6928227e+09 0.092757824 0.023457777 -48.255884 30.491767 6617.2573 1.5811599e+09 0.091666997 0.023524564 -48.193244 30.368397 6619.8140 1.4692461e+09 0.091422606 0.024722320 -48.123018 30.232960 6622.3707 1.3589870e+09 0.090444743 0.024659328 -48.055815 30.105083 6624.9274 1.2559380e+09 0.089168517 0.025358724 -47.993391 29.989155 6627.4840 1.1702287e+09 0.087399173 0.025503790 -47.931613 29.873228 6630.0407 1.0967645e+09 0.086303180 0.025928402 -47.873651 29.757301 6632.5974 1.0299695e+09 0.084659317 0.026103979 -47.815689 29.641374 6635.1541 9.7345121e+08 0.083175187 0.026422896 -47.757725 29.525447 6637.7108 9.1675059e+08 0.081798025 0.025813297 -47.699761 29.409521 6640.2675 8.5688684e+08 0.081792080 0.025237929 -47.637014 29.280722 6642.8241 7.9861681e+08 0.081746002 0.025185422 -47.571793 29.145264 6645.3808 7.4508353e+08 0.080623276 0.025630082 -47.508436 29.022811 6647.9375 6.9868696e+08 0.079415711 0.026931376 -47.446014 28.906884 6650.4942 6.5569809e+08 0.078530992 0.026368368 -47.382412 28.784826 6653.0509 6.1167854e+08 0.078044390 0.027551628 -47.317202 28.654405 6655.6075 5.6771159e+08 0.076340047 0.027861253 -47.255104 28.530210 6658.1642 5.3344682e+08 0.074440565 0.030352327 -47.197142 28.414283 6660.7209 5.0504889e+08 0.072597751 0.032281262 -47.140012 28.298356 6663.2776 4.7872550e+08 0.070958518 0.032406288 -47.086505 28.182428 6665.8343 4.5520694e+08 0.070400774 0.027180160 -47.032999 28.066500 6668.3909 4.3051556e+08 0.069422712 0.027816733 -46.968438 27.936874 6670.9476 4.0216961e+08 0.069307177 0.026889612 -46.903219 27.806435 6673.5043 3.7719152e+08 0.068994126 0.028213445 -46.844897 27.689792 6676.0610 3.5240117e+08 0.066873098 0.031753030 -46.786933 27.573866 6678.6177 3.3137759e+08 0.066010041 0.030523491 -46.727391 27.447680 6681.1743 3.1677597e+08 0.067120781 0.029791117 -46.667198 27.317260 6683.7310 2.9791887e+08 0.067815571 0.032259915 -46.608597 27.197192 6686.2877 2.8345218e+08 0.067136624 0.033928479 -46.550632 27.081264 6688.8444 2.6779983e+08 0.064040072 0.033980105 -46.491617 26.958503 6691.4011 2.4897486e+08 0.062993375 0.032906636 -46.431424 26.828082 6693.9578 2.3142641e+08 0.061982117 0.031275519 -46.374423 26.704582 6696.5144 2.1522888e+08 0.061860074 0.029889523 -46.320910 26.588640 6699.0711 2.0529377e+08 0.060489369 0.031524811 -46.264643 26.469288 6701.6278 1.9846410e+08 0.058459109 0.032330605 -46.199434 26.338868 6704.1845 1.8763373e+08 0.058644307 0.036268142 -46.135439 26.208448 6706.7412 1.7775963e+08 0.058471163 0.039736336 -46.075243 26.078027 6709.2978 1.6641319e+08 0.057702735 0.040943102 -46.016710 25.951207 6711.8545 1.6068044e+08 0.055366555 0.041664445 -45.963205 25.835279 6714.4112 1.5449177e+08 0.052906070 0.047334323 -45.909663 25.719270 6716.9679 1.4655507e+08 0.050599545 0.049826966 -45.849470 25.588850 6719.5246 1.3715056e+08 0.048426751 0.050871463 -45.789337 25.458430 6722.0812 1.2600716e+08 0.048526947 0.050504762 -45.734159 25.328011 6724.6379 1.1919186e+08 0.044805556 0.044599555 -45.679012 25.197859 6727.1946 1.1038810e+08 0.042253753 0.040701111 -45.625500 25.081916 6729.7513 1.0418742e+08 0.041421151 0.040544674 -45.571989 24.965974 6732.3080 1.0015158e+08 0.039661851 0.043796906 -45.513291 24.842689 6734.8647 93353785. 0.039537961 0.049301576 -45.453095 24.717284 6737.4213 90439661. 0.041579682 0.055477732 -45.392901 24.587955 6739.9780 86202175. 0.041843397 0.064023455 -45.332708 24.457535 6742.5347 83174215. 0.038836091 0.069913637 -45.276471 24.327115 6745.0914 82591891. 0.034868899 0.078605300 -45.221293 24.196695 6747.6481 77048406. 0.030494225 0.067138060 -45.162126 24.066275 6750.2047 71982335. 0.027912801 0.072353731 -45.101933 23.935855 6752.7614 67284135. 0.025013444 0.073253372 -45.045761 23.809456 6755.3181 65789152. 0.022837471 0.074465879 -44.990583 23.684052 6757.8748 63461356. 0.021083887 0.074085327 -44.935404 23.554594 6760.4315 59791787. 0.021326773 0.076884050 -44.880226 23.424173 6762.9881 56652854. 0.025601230 0.076456889 -44.825048 23.297839 6765.5448 52548037. 0.025691046 0.079630653 -44.769870 23.172435 6768.1015 50399938. 0.0083431021 0.081221267 -44.710574 23.042912 6770.6582 49510302. 0.015112366 0.088476093 -44.650381 22.912492 6773.2149 48957101. 0.037076924 0.094677169 -44.594331 22.782056