# # 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 = 53.026335 km # Date (UTC) = 2014-01-27T10:22:49.647 # Date (julian) = 2456684.93251907 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.7145 7.1978020e+10 0.035773265 0.030990928 -28.212743 59.982342 6498.0417 6.1067648e+10 0.043187127 0.031692697 -28.492851 59.799702 6500.3690 5.3650700e+10 0.050293711 0.032394466 -28.755305 59.625873 6502.6962 4.8679304e+10 0.057390522 0.033096235 -28.980570 59.473667 6505.0234 4.4604918e+10 0.064680148 0.033798004 -29.235011 59.297018 6507.3506 4.0726133e+10 0.072212465 0.034499773 -29.503289 59.109105 6509.6779 3.6718431e+10 0.079997139 0.035201543 -29.766250 58.926494 6512.0051 3.3357371e+10 0.088403144 0.035903312 -30.029267 58.743842 6514.3323 3.1206891e+10 0.098031436 0.036605081 -30.265277 58.574366 6516.6595 2.9449222e+10 0.10879452 0.037306850 -30.478366 58.416072 6518.9868 2.7516407e+10 0.12031260 0.038008619 -30.723192 58.235889 6521.3140 2.5490066e+10 0.13267743 0.038710388 -30.949644 58.066156 6523.6412 2.3291707e+10 0.14100927 0.039338038 -31.156604 57.907891 6525.9685 2.1356619e+10 0.14708257 0.039671688 -31.400329 57.721514 6528.2957 1.9706568e+10 0.15453418 0.041677045 -31.620969 57.551119 6530.6229 1.8006203e+10 0.16036905 0.044700752 -31.815794 57.398912 6532.9501 1.6549039e+10 0.16640715 0.047477927 -32.051148 57.213640 6535.2774 1.5318930e+10 0.17014453 0.048103980 -32.265680 57.039751 6537.6046 1.4079664e+10 0.17268745 0.048970261 -32.454379 56.881489 6539.9318 1.2907559e+10 0.17401959 0.050771563 -32.682055 56.695829 6542.2590 1.1766472e+10 0.17219193 0.051100584 -32.890507 56.521558 6544.5863 1.0743374e+10 0.17027861 0.052119939 -33.073155 56.363265 6546.9135 9.9949157e+09 0.16829473 0.053216184 -33.260997 56.204971 6549.2407 9.3350472e+09 0.16611204 0.054211594 -33.454606 56.040010 6551.5679 8.6736421e+09 0.16465726 0.055435110 -33.666487 55.850047 6553.8952 8.0160583e+09 0.16264150 0.054885074 -33.853728 55.686770 6556.2224 7.4280546e+09 0.16069856 0.053980428 -34.035136 55.527289 6558.5496 6.9401759e+09 0.15874344 0.052770953 -34.211696 55.362905 6560.8769 6.5331357e+09 0.15604555 0.051483711 -34.384868 55.201909 6563.2041 6.0987989e+09 0.15383290 0.049692290 -34.555338 55.043613 6565.5313 5.6365005e+09 0.15165651 0.047715087 -34.756979 54.856375 6567.8585 5.1946108e+09 0.15012074 0.045891272 -34.942958 54.680362 6570.1858 4.7994422e+09 0.14880382 0.044840559 -35.113431 54.515978 6572.5130 4.5141400e+09 0.14698368 0.043936379 -35.278377 54.357121 6574.8402 4.2849932e+09 0.14466349 0.042451450 -35.442736 54.197267 6577.1674 4.0629076e+09 0.14193757 0.039957356 -35.607117 54.032883 6579.4947 3.8291028e+09 0.13878217 0.036798554 -35.767741 53.872258 6581.8219 3.5944715e+09 0.13599132 0.035347726 -35.926038 53.713962 6584.1491 3.3658794e+09 0.13308849 0.034434276 -36.084332 53.549731 6586.4764 3.1631156e+09 0.13015296 0.033165138 -36.242626 53.387372 6588.8036 2.9925634e+09 0.12732268 0.033111572 -36.400923 53.229077 6591.1308 2.8390224e+09 0.12407590 0.029054309 -36.555018 53.066581 6593.4580 2.7033003e+09 0.12153902 0.026676387 -36.707223 52.902488 6595.7853 2.5707058e+09 0.11880693 0.025705005 -36.859400 52.744226 6598.1125 2.4395968e+09 0.11690812 0.025353459 -37.011588 52.583487 6600.4397 2.3155488e+09 0.11641933 0.025893850 -37.163796 52.419103 6602.7669 2.1902785e+09 0.11569413 0.026862155 -37.311361 52.254719 6605.0942 2.0720821e+09 0.11492811 0.026744044 -37.457479 52.091064 6607.4214 1.9627165e+09 0.11334515 0.024874894 -37.603598 51.932768 6609.7486 1.8551709e+09 0.11020585 0.023928308 -37.746812 51.771568 6612.0759 1.7470530e+09 0.10769617 0.024264078 -37.886843 51.607186 6614.4031 1.6407906e+09 0.10665423 0.023662787 -38.026873 51.442803 6616.7303 1.5422988e+09 0.10511617 0.023396920 -38.166897 51.278426 6619.0575 1.4541175e+09 0.10424889 0.024539796 -38.306899 51.114075 6621.3848 1.3742298e+09 0.10313811 0.024961916 -38.446917 50.949706 6623.7120 1.2966186e+09 0.10105886 0.024755606 -38.586947 50.785322 6626.0392 1.2207262e+09 0.099535370 0.026540942 -38.721457 50.626458 6628.3664 1.1487827e+09 0.097476619 0.025851874 -38.855400 50.466554 6630.6937 1.0783693e+09 0.095505171 0.025930011 -38.989342 50.302173 6633.0209 1.0190239e+09 0.093645648 0.026155901 -39.108140 50.152394 6635.3481 9.7453538e+08 0.091480250 0.026451994 -39.217725 50.011498 6637.6753 9.3677992e+08 0.089470973 0.025830646 -39.344494 49.854032 6640.0026 8.9834537e+08 0.088704519 0.025270337 -39.478053 49.689649 6642.3298 8.5527811e+08 0.088435599 0.025165192 -39.605907 49.525264 6644.6570 8.1540483e+08 0.087359428 0.025414617 -39.733750 49.360893 6646.9843 7.7464887e+08 0.086357430 0.026429631 -39.861577 49.196543 6649.3115 7.3478887e+08 0.085432926 0.027204322 -39.984691 49.032167 6651.6387 6.9543372e+08 0.085201549 0.026973645 -40.104105 48.870957 6653.9659 6.5646813e+08 0.084706497 0.028018835 -40.208473 48.730061 6656.2932 6.2656322e+08 0.082887330 0.028280727 -40.316648 48.584025 6658.6204 6.0047108e+08 0.081261786 0.031161357 -40.438414 48.419642 6660.9476 5.7088726e+08 0.079811391 0.032487338 -40.560178 48.255260 6663.2748 5.4189233e+08 0.078508156 0.032407046 -40.681942 48.090879 6665.6021 5.1018727e+08 0.078142237 0.027560612 -40.803708 47.926494 6667.9293 4.8347115e+08 0.077445963 0.027444806 -40.918886 47.768952 6670.2565 4.6509211e+08 0.076698900 0.027209787 -41.018036 47.628056 6672.5838 4.4527027e+08 0.076229903 0.027217954 -41.123384 47.478352 6674.9110 4.2502500e+08 0.074664001 0.029723264 -41.239060 47.313968 6677.2382 4.0180573e+08 0.072369418 0.032019579 -41.354720 47.149609 6679.5654 3.7782463e+08 0.072071705 0.029800521 -41.469829 46.985255 6681.8927 3.5847469e+08 0.072835689 0.030342195 -41.579418 46.820872 6684.2199 3.3849722e+08 0.072901913 0.032665250 -41.682005 46.666991 6686.5471 3.2013023e+08 0.071629988 0.034079405 -41.775936 46.526094 6688.8743 3.0377075e+08 0.068431980 0.033987019 -41.878180 46.372728 6691.2016 2.8924045e+08 0.067152687 0.032953705 -41.987769 46.208345 6693.5288 2.7813136e+08 0.066020427 0.031422678 -42.097358 46.043961 6695.8560 2.6624198e+08 0.065665006 0.029702232 -42.206947 45.879578 6698.1833 2.5625117e+08 0.064820956 0.030469352 -42.316536 45.715197 6700.5105 2.4614233e+08 0.063079975 0.031046355 -42.413528 45.564987 6702.8377 2.3720740e+08 0.062359605 0.033545643 -42.502239 45.424091 6705.1649 2.3047535e+08 0.062587094 0.036961824 -42.601098 45.267079 6707.4922 2.2040256e+08 0.062287337 0.040116325 -42.704580 45.102727 6709.8194 2.1249047e+08 0.061331809 0.040611373 -42.808080 44.938343 6712.1466 2.0460586e+08 0.059132415 0.042102173 -42.905640 44.783394 6714.4738 1.9932251e+08 0.056931856 0.047339032 -42.994353 44.642498 6716.8011 1.9662422e+08 0.054828921 0.049581261 -43.090244 44.490200 6719.1283 1.9049290e+08 0.052414401 0.051247948 -43.193744 44.325817 6721.4555 1.8239150e+08 0.052809970 0.050441150 -43.292112 44.161433 6723.7827 1.7304625e+08 0.051037612 0.049805497 -43.389524 43.997050 6726.1100 1.6249544e+08 0.046974580 0.040952359 -43.486936 43.832667 6728.4372 1.5291418e+08 0.046280409 0.040247761 -43.576583 43.681389 6730.7644 1.4632309e+08 0.044560181 0.041427031 -43.660077 43.540495 6733.0917 1.3974346e+08 0.043203224 0.044421944 -43.752501 43.384528 6735.4189 1.3468238e+08 0.043669038 0.049738110 -43.849914 43.220143 6737.7461 1.2694481e+08 0.045233031 0.056512324 -43.947307 43.055793 6740.0733 1.2028452e+08 0.045103875 0.064175649 -44.044707 42.891430 6742.4006 1.1534487e+08 0.042269061 0.069586806 -44.142119 42.727047 6744.7278 1.0996460e+08 0.038071045 0.078356342 -44.225872 42.579429 6747.0550 1.0772234e+08 0.033331118 0.067342220 -44.304148 42.438533 6749.3822 1.0365845e+08 0.032634456 0.072173273 -44.392830 42.278906 6751.7095 1.0130278e+08 0.029163946 0.074011641 -44.484155 42.114522 6754.0367 96286283. 0.027564544 0.076154451 -44.575478 41.950139 6756.3639 89057538. 0.024921481 0.075103351 -44.666802 41.785755 6758.6912 84594092. 0.025144196 0.075166862 -44.758127 41.621370 6761.0184 80309329. 0.025708471 0.077969744 -44.833559 41.477422 6763.3456 78701071. 0.031388396 0.077490326 -44.906616 41.336528 6765.6728 76140297. 0.033779535 0.079654022 -44.997095 41.173232 6768.0001 73043586. 0.031314885 0.080856255 -45.086520 41.008859 6770.3273 70614184. 0.026506877 0.087673525 -45.171738 40.844508 6772.6545 69208324. 0.022405903 0.093318073 -45.261036 40.680136 6774.9817 67669325. 0.018300347 0.098962622 -45.352201 40.515752 6777.3090 65106686. 0.014177345 0.10460717 -45.437439 40.351369 6779.6362 60959305. 0.010019211 0.11025172 -45.518007 40.195989 6781.9634 54549994. 0.0057941766 0.11589627 -45.591065 40.055091 6784.2907 53645158. 0.0016202609 0.12154082 -45.666966 39.903225 6786.6179 54061802. -0.0025709759 0.12718537 -45.746111 39.738842 6788.9451 53707638. -0.0068476159 0.13282991 -45.830280 39.574458 6791.2723 54510192. -0.011200610 0.13847446 -45.914409 39.410075 6793.5996 49355764. -0.015994776 0.14411901 -45.993555 39.245691 6795.9268 46883750. -0.021124024 0.14976356 -46.075977 39.081327 6798.2540 45626252. -0.027581139 0.15540811 -46.161195 38.916979 6800.5812 43794212. -0.045310228 0.16105266 -46.240970 38.752599 6802.9085 45923390. -0.037797770 0.16669721 -46.320119 38.588215 6805.2357 45259279. -0.019402523 0.17234176 -46.399267 38.423830