# # 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 = 42.797596 km # Date (UTC) = 2015-01-24T09:41:35.724 # Date (julian) = 2457046.90388569 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.7779 7.9040425e+10 0.043947577 0.032216234 -20.097437 57.324534 6501.9085 7.3769073e+10 0.052302692 0.032858718 -20.286950 57.185186 6504.0391 6.8415035e+10 0.060886074 0.033501202 -20.475098 57.045837 6506.1698 6.3235136e+10 0.069746666 0.034143686 -20.659038 56.906488 6508.3004 5.8352912e+10 0.078936074 0.034786170 -20.842978 56.764625 6510.4310 5.3762794e+10 0.088499951 0.035428654 -21.026918 56.619701 6512.5616 4.9452774e+10 0.098470800 0.036071138 -21.190450 56.491523 6514.6923 4.5856924e+10 0.10902620 0.036713623 -21.343331 56.372085 6516.8229 4.2453060e+10 0.12003400 0.037356107 -21.507420 56.238292 6518.9535 3.9019830e+10 0.13140976 0.037998591 -21.680178 56.093399 6521.0841 3.5652841e+10 0.14315560 0.038641075 -21.857252 55.952773 6523.2148 3.2409346e+10 0.15183788 0.039232341 -22.035619 55.813425 6525.3454 2.9388418e+10 0.15823062 0.039742797 -22.203110 55.668638 6527.4760 2.6451988e+10 0.16365840 0.041062060 -22.371339 55.523715 6529.6066 2.3707394e+10 0.16806970 0.043202100 -22.544131 55.378793 6531.7373 2.1354675e+10 0.17194202 0.046301768 -22.703661 55.241891 6533.8679 1.9533640e+10 0.17441425 0.047888411 -22.842209 55.117674 6535.9985 1.8055434e+10 0.17480603 0.047791149 -22.989191 54.989006 6538.1291 1.6739077e+10 0.17649530 0.049219561 -23.156409 54.849658 6540.2598 1.5405002e+10 0.17627060 0.050976818 -23.320840 54.707522 6542.3904 1.4099190e+10 0.17398576 0.051150448 -23.482485 54.562600 6544.5210 1.2986835e+10 0.17192181 0.052066997 -23.624449 54.432297 6546.6516 1.2042327e+10 0.16975254 0.053000712 -23.758219 54.308081 6548.7823 1.1195306e+10 0.16760147 0.053901254 -23.905638 54.171192 6550.9129 1.0337861e+10 0.16584823 0.055213936 -24.061678 54.026299 6553.0435 9.4106586e+09 0.16458611 0.055313199 -24.217743 53.881383 6555.1741 8.5753946e+09 0.16281077 0.054707057 -24.373152 53.736967 6557.3048 7.9207877e+09 0.16072823 0.053675088 -24.502145 53.612750 6559.4354 7.3947149e+09 0.15819334 0.052338040 -24.631137 53.488534 6561.5660 6.9156694e+09 0.15555214 0.051093769 -24.780156 53.345035 6563.6966 6.4321697e+09 0.15290221 0.049122534 -24.927046 53.202299 6565.8272 5.9961915e+09 0.15062182 0.047379046 -25.051262 53.073306 6567.9579 5.6190893e+09 0.14894525 0.045807282 -25.176392 52.943609 6570.0885 5.2685414e+09 0.14727665 0.044880850 -25.321314 52.798686 6572.2191 4.9244040e+09 0.14524725 0.044104671 -25.461059 52.658940 6574.3497 4.6184597e+09 0.14256478 0.042687024 -25.585274 52.534726 6576.4804 4.3425484e+09 0.13985865 0.040818478 -25.712739 52.407262 6578.6110 4.0781199e+09 0.13663435 0.037684783 -25.857662 52.262338 6580.7416 3.8105508e+09 0.13358242 0.035835391 -25.993338 52.124928 6582.8722 3.5653138e+09 0.13085590 0.035056433 -26.112776 52.000713 6585.0029 3.3605904e+09 0.12796419 0.033968481 -26.236074 51.869418 6587.1335 3.1557433e+09 0.12530632 0.033187946 -26.369822 51.718951 6589.2641 2.9550067e+09 0.12307097 0.032521995 -26.496768 51.580961 6591.3947 2.7811602e+09 0.12069081 0.028756491 -26.616206 51.456747 6593.5254 2.6199409e+09 0.11868294 0.026613791 -26.741123 51.324618 6595.6560 2.4770769e+09 0.11616846 0.025691599 -26.874897 51.179694 6597.7866 2.3395049e+09 0.11421265 0.025474502 -26.994621 51.044139 6599.9172 2.2161889e+09 0.11333407 0.024984897 -27.104505 50.915145 6602.0479 2.1061719e+09 0.11276012 0.027475790 -27.223454 50.778268 6604.1785 1.9871810e+09 0.11135437 0.026177256 -27.351654 50.633347 6606.3091 1.8750298e+09 0.11082327 0.026948501 -27.470364 50.499589 6608.4397 1.7682005e+09 0.10826792 0.023720745 -27.585025 50.370596 6610.5704 1.6899238e+09 0.10510420 0.024547944 -27.693879 50.244507 6612.7010 1.6220667e+09 0.10328562 0.023797004 -27.798985 50.120292 6614.8316 1.5465876e+09 0.10189522 0.023367547 -27.915976 49.982551 6616.9622 1.4681512e+09 0.10023934 0.023433321 -28.044176 49.832055 6619.0929 1.3831007e+09 0.099318840 0.024548319 -28.155735 49.700495 6621.2235 1.3078443e+09 0.098188838 0.025015373 -28.260840 49.576278 6623.3541 1.2448260e+09 0.096214577 0.024623016 -28.365946 49.449064 6625.4847 1.1863350e+09 0.094500890 0.025976032 -28.471053 49.320071 6627.6154 1.1206811e+09 0.092252396 0.025554512 -28.582542 49.182567 6629.7460 1.0534568e+09 0.090650610 0.025974230 -28.699594 49.037645 6631.8766 9.9191566e+08 0.088556647 0.026019811 -28.804266 48.904515 6634.0072 9.3471060e+08 0.086895339 0.026327370 -28.904595 48.775521 6636.1379 8.9111633e+08 0.085401902 0.026496219 -29.004922 48.649620 6638.2685 8.4973692e+08 0.084539904 0.025659946 -29.105250 48.525405 6640.3991 8.0941612e+08 0.084842017 0.025221821 -29.214830 48.386648 6642.5297 7.6595186e+08 0.084911940 0.025173374 -29.331861 48.236180 6644.6603 7.1845495e+08 0.084158556 0.025414976 -29.432576 48.105651 6646.7910 6.7805186e+08 0.083214336 0.026329581 -29.528126 47.981435 6648.9216 6.4593895e+08 0.082106884 0.027581205 -29.626860 47.854035 6651.0522 6.1993467e+08 0.081771813 0.026524186 -29.727189 47.725042 6653.1828 5.9225334e+08 0.081402426 0.027619016 -29.833909 47.583722 6655.3135 5.6132929e+08 0.080095647 0.027739743 -29.945387 47.433228 6657.4441 5.3118839e+08 0.078427251 0.029416247 -30.040731 47.303210 6659.5747 5.0258178e+08 0.077021992 0.031714711 -30.131505 47.178993 6661.7053 4.7818567e+08 0.075619259 0.032894196 -30.225556 47.051499 6663.8360 4.5722985e+08 0.074243872 0.032251546 -30.321107 46.922505 6665.9666 4.3648404e+08 0.074213280 0.026963335 -30.413825 46.796345 6668.0972 4.1932105e+08 0.073377905 0.027556805 -30.504597 46.672130 6670.2278 3.9920212e+08 0.072830687 0.027223078 -30.602933 46.534779 6672.3585 3.7911349e+08 0.072486154 0.027087372 -30.708838 46.384282 6674.4891 3.5875174e+08 0.071347609 0.029367370 -30.804064 46.248962 6676.6197 3.4031781e+08 0.069069237 0.032113126 -30.894837 46.119969 6678.7503 3.2786185e+08 0.068172014 0.030434756 -30.982683 45.993903 6680.8810 3.1426150e+08 0.069020866 0.029631653 -31.068679 45.869688 6683.0116 2.9817163e+08 0.069766323 0.031205562 -31.165016 45.731820 6685.1422 2.8065519e+08 0.069775360 0.032855048 -31.270920 45.581324 6687.2728 2.6393307e+08 0.068192781 0.034190737 -31.362383 45.449891 6689.4035 2.5227363e+08 0.065871983 0.033652846 -31.448379 45.325673 6691.5341 2.4071626e+08 0.065073602 0.032875254 -31.531354 45.198436 6693.6647 2.2942973e+08 0.064278936 0.031376053 -31.612572 45.069443 6695.7953 2.1842753e+08 0.064132832 0.029713380 -31.696365 44.940451 6697.9260 2.0969596e+08 0.063416218 0.030208447 -31.782361 44.811459 6700.0566 2.0229450e+08 0.061830247 0.030709687 -31.874750 44.675362 6702.1872 1.9259412e+08 0.060302805 0.033026215 -31.975080 44.530438 6704.3178 1.8337775e+08 0.060585168 0.036333625 -32.062941 44.395915 6706.4485 1.7064616e+08 0.060429943 0.039226905 -32.144146 44.266944 6708.5791 1.6193734e+08 0.059842151 0.040674175 -32.225358 44.137960 6710.7097 1.5314526e+08 0.058197578 0.040635410 -32.306575 44.008966 6712.8403 1.4846913e+08 0.055970383 0.043390167 -32.394094 43.872560 6714.9710 1.4308959e+08 0.053746736 0.047376405 -32.488852 43.727638 6717.1016 1.3411779e+08 0.051477076 0.049867985 -32.571313 43.593409 6719.2322 1.2993795e+08 0.049087752 0.051149231 -32.647754 43.464416 6721.3628 1.2209702e+08 0.049160255 0.050413220 -32.726956 43.335423 6723.4934 1.1795214e+08 0.047366818 0.049644149 -32.808173 43.206430 6725.6241 1.1298439e+08 0.042993649 0.041186191 -32.893253 43.069711 6727.7547 1.0448792e+08 0.041644369 0.039954912 -32.982436 42.924790 6729.8853 1.0108671e+08 0.040250741 0.040455338 -33.062814 42.790874 6732.0159 93666530. 0.038222754 0.043743145 -33.139255 42.661880 6734.1466 90849767. 0.037138596 0.049344781 -33.215696 42.535742 6736.2772 89432080. 0.038658126 0.051402960 -33.292139 42.411525 6738.4078 82587281. 0.039264713 0.059566326 -33.375011 42.274046 6740.5384 77424347. 0.038122176 0.064970201 -33.464194 42.123551 6742.6691 70731776. 0.034299426 0.070241063 -33.544322 41.988336 6744.7997 66294068. 0.029546427 0.078411954 -33.620762 41.859343 6746.9303 66418618. 0.023892300 0.068171302 -33.694252 41.733299 6749.0609 65278315. 0.020123717 0.072261247 -33.765913 41.609083 6751.1916 62192130. -0.0055990671 0.073792666 -33.843840 41.471086 6753.3222 59703120. 0.011109127 0.074019956 -33.927450 41.320590 6755.4528 54411874. 0.052649461 0.074406815 -34.002334 41.185797