# # 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 = 51.975741 km # Date (UTC) = 2013-11-21T09:43:16.263 # Date (julian) = 2456617.90504934 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.2383 6.3382341e+10 0.042336460 0.031450434 -19.431757 60.802589 6499.3893 5.8403621e+10 0.048488059 0.032099044 -19.639150 60.696482 6501.5402 5.3819692e+10 0.054512008 0.032747653 -19.829601 60.597829 6503.6911 4.9991369e+10 0.060593995 0.033396262 -20.006845 60.504986 6505.8421 4.6653012e+10 0.066907671 0.034044872 -20.188033 60.408664 6507.9930 4.3486898e+10 0.073568054 0.034693481 -20.385779 60.297734 6510.1440 4.0335649e+10 0.080650152 0.035342091 -20.583525 60.186804 6512.2949 3.7220887e+10 0.088198280 0.035990700 -20.781270 60.075873 6514.4458 3.4484062e+10 0.096511844 0.036639310 -20.977696 59.965575 6516.5968 3.2131426e+10 0.10577871 0.037287919 -21.146501 59.868513 6518.7477 3.0140517e+10 0.11615096 0.037936528 -21.315306 59.771451 6520.8986 2.8409067e+10 0.12765036 0.038585138 -21.500414 59.665013 6523.0496 2.6538750e+10 0.13700561 0.039191400 -21.693337 59.554080 6525.2005 2.4564183e+10 0.14418250 0.039759331 -21.883353 59.443149 6527.3514 2.2640380e+10 0.15046864 0.040971626 -22.071453 59.332218 6529.5024 2.0931455e+10 0.15634023 0.043036041 -22.244874 59.228628 6531.6533 1.9558506e+10 0.16235231 0.046179598 -22.405238 59.131566 6533.8043 1.8363103e+10 0.16725991 0.047861373 -22.568490 59.032290 6535.9552 1.7162757e+10 0.16923031 0.047809936 -22.746943 58.921360 6538.1061 1.5951774e+10 0.17160364 0.049208363 -22.923837 58.811624 6540.2571 1.4880787e+10 0.17154665 0.050975549 -23.084226 58.714548 6542.4080 1.3987162e+10 0.16923333 0.051157141 -23.244614 58.617471 6544.5589 1.3174744e+10 0.16757106 0.052097776 -23.414497 58.510461 6546.7099 1.2300252e+10 0.16583464 0.053048646 -23.588127 58.399530 6548.8608 1.1456437e+10 0.16406891 0.053924716 -23.747786 58.294810 6551.0118 1.0757520e+10 0.16278861 0.055239878 -23.899709 58.193527 6553.1627 1.0143426e+10 0.16196123 0.055253282 -24.056260 58.089600 6555.3136 9.5627392e+09 0.16054149 0.054589838 -24.225068 57.978669 6557.4646 8.9498416e+09 0.15900485 0.053574913 -24.393876 57.866771 6559.6155 8.3167672e+09 0.15711315 0.052317708 -24.562683 57.751018 6561.7664 7.7543389e+09 0.15506297 0.050994994 -24.728803 57.637107 6563.9174 7.2615736e+09 0.15276730 0.048867168 -24.876507 57.535824 6566.0683 6.8562562e+09 0.15105504 0.047144236 -25.024211 57.434541 6568.2193 6.4628977e+09 0.14996248 0.045570114 -25.184250 57.322293 6570.3702 6.0657242e+09 0.14884090 0.044764162 -25.348235 57.206538 6572.5211 5.6968054e+09 0.14737193 0.043931718 -25.495302 57.103576 6574.6721 5.3840568e+09 0.14530316 0.042532213 -25.634565 57.006514 6576.8230 5.1152663e+09 0.14289439 0.040424098 -25.780090 56.903569 6578.9739 4.8253192e+09 0.13977927 0.037111646 -25.939252 56.787816 6581.1249 4.5370058e+09 0.13705358 0.035558794 -26.092593 56.675556 6583.2758 4.2724999e+09 0.13473465 0.034882060 -26.227635 56.574273 6585.4268 4.0544916e+09 0.13234796 0.033629593 -26.362678 56.472990 6587.5777 3.8765092e+09 0.13052419 0.033286364 -26.497722 56.371708 6589.7286 3.7133718e+09 0.12870386 0.031600445 -26.632766 56.270426 6591.8796 3.5396670e+09 0.12650609 0.028209423 -26.775077 56.161877 6594.0305 3.3534829e+09 0.12445453 0.026155780 -26.924592 56.046123 6596.1814 3.1595827e+09 0.12207745 0.025726449 -27.066092 55.936574 6598.3324 2.9962829e+09 0.12044559 0.025248477 -27.196915 55.835292 6600.4833 2.8638960e+09 0.12001374 0.025983480 -27.328844 55.732869 6602.6343 2.7232533e+09 0.11927081 0.026975388 -27.478359 55.612292 6604.7852 2.5777638e+09 0.11836475 0.026537495 -27.627864 55.491724 6606.9361 2.4390509e+09 0.11728781 0.025821775 -27.754803 55.390158 6609.0871 2.3220472e+09 0.11412642 0.023731793 -27.881406 55.288875 6611.2380 2.2136195e+09 0.11114883 0.024806682 -28.016183 55.178675 6613.3889 2.0985650e+09 0.10999086 0.023716292 -28.156052 55.062921 6615.5399 1.9899174e+09 0.10835528 0.023268142 -28.286430 54.955022 6617.6908 1.8991696e+09 0.10706400 0.023668286 -28.408813 54.853741 6619.8417 1.8176399e+09 0.10592789 0.024729014 -28.534225 54.749117 6621.9927 1.7243239e+09 0.10432517 0.024760417 -28.674093 54.628540 6624.1436 1.6274935e+09 0.10205509 0.024939191 -28.811796 54.509889 6626.2946 1.5445481e+09 0.10022469 0.026215606 -28.929958 54.408606 6628.4455 1.4721972e+09 0.098059293 0.025883972 -29.048121 54.307323 6630.5964 1.4069817e+09 0.095859758 0.025929772 -29.178613 54.191952 6632.7474 1.3380136e+09 0.094008730 0.026121961 -29.313659 54.071375 6634.8983 1.2715771e+09 0.092433702 0.026392370 -29.437615 53.963472 6637.0492 1.2156932e+09 0.090960840 0.026137292 -29.555777 53.862191 6639.2002 1.1627067e+09 0.090176471 0.025556524 -29.677404 53.755367 6641.3511 1.1076593e+09 0.090848906 0.025149493 -29.807628 53.634790 6643.5021 1.0514496e+09 0.090264574 0.025268423 -29.934373 53.518336 6645.6530 1.0044188e+09 0.089274294 0.025757589 -30.048333 53.417037 6647.8039 9.6387748e+08 0.088203863 0.026861055 -30.162293 53.315739 6649.9549 9.2347742e+08 0.087359896 0.026317446 -30.285915 53.198158 6652.1058 8.8183178e+08 0.086727437 0.027279633 -30.411315 53.077581 6654.2567 8.3669974e+08 0.085909968 0.027926850 -30.524624 52.971886 6656.4077 8.0365426e+08 0.083931509 0.028381238 -30.634346 52.870605 6658.5586 7.7018778e+08 0.082267743 0.031051802 -30.750365 52.761574 6660.7096 7.3292380e+08 0.080773476 0.032270950 -30.875764 52.640997 6662.8605 6.9812777e+08 0.079393776 0.032561484 -30.994632 52.525369 6665.0114 6.6563422e+08 0.078561557 0.028528400 -31.100135 52.419866 6667.1624 6.4202794e+08 0.077840812 0.027163098 -31.205638 52.314363 6669.3133 6.1541388e+08 0.076531542 0.028033916 -31.325592 52.199032 6671.4642 5.8527737e+08 0.076330162 0.026871964 -31.446168 52.083277 6673.6152 5.5803604e+08 0.075480278 0.028379264 -31.553400 51.976599 6675.7661 5.3786299e+08 0.073098349 0.031265753 -31.658902 51.871097 6677.9171 5.1503412e+08 0.071655819 0.031054529 -31.769691 51.757821 6680.0680 4.9188147e+08 0.071696925 0.029456099 -31.885446 51.637244 6682.2189 4.6985491e+08 0.072389357 0.030591813 -31.994799 51.523335 6684.3699 4.4972968e+08 0.072583521 0.032672861 -32.096080 51.417833 6686.5208 4.3462056e+08 0.071584703 0.034064096 -32.198413 51.311585 6688.6717 4.1690717e+08 0.068951313 0.033940251 -32.314169 51.195832 6690.8227 3.9493937e+08 0.067863153 0.033021584 -32.429842 51.080123 6692.9736 3.7512491e+08 0.067145893 0.031634728 -32.526998 50.974569 6695.1246 3.5564551e+08 0.066664925 0.029836595 -32.624060 50.869067 6697.2755 3.4091325e+08 0.066108519 0.030126129 -32.729856 50.754072 6699.4264 3.2971658e+08 0.064721769 0.031196962 -32.840786 50.633495 6701.5774 3.1492458e+08 0.062989549 0.032256603 -32.951716 50.512918 6703.7283 2.9815143e+08 0.063140381 0.035497677 -33.062647 50.392341 6705.8792 2.8290825e+08 0.063205617 0.038231715 -33.166879 50.279045 6708.0302 2.7121346e+08 0.062861555 0.040076438 -33.263941 50.173543 6710.1811 2.6207091e+08 0.061571122 0.040531945 -33.362028 50.066332 6712.3321 2.4897359e+08 0.059473715 0.042446465 -33.468137 49.945754 6714.4830 2.3578864e+08 0.057421331 0.047339719 -33.574246 49.825177 6716.6339 2.2160207e+08 0.055565693 0.049335073 -33.680354 49.704600 6718.7849 2.1206562e+08 0.053209049 0.051034777 -33.786462 49.584023 6720.9358 2.0614935e+08 0.053328765 0.050311338 -33.875667 49.478018 6723.0867 1.9614834e+08 0.052264310 0.049417318 -33.964288 49.372516 6725.2377 1.9108025e+08 0.047980050 0.041427557 -34.063350 49.258013 6727.3886 1.8003562e+08 0.046659720 0.040442645 -34.169458 49.137437 6729.5395 1.7059241e+08 0.045956683 0.040685805 -34.273040 49.016860 6731.6905 1.6286367e+08 0.044294465 0.043124218 -34.374324 48.896283 6733.8414 1.5260453e+08 0.043348904 0.048492636 -34.469907 48.782494 6735.9924 1.5044729e+08 0.044948558 0.050346895 -34.558529 48.676991 6738.1433 1.4718590e+08 0.046234511 0.058110006 -34.647783 48.570272 6740.2942 1.4414348e+08 0.045884776 0.064553010 -34.744245 48.449695 6742.4452 1.4221465e+08 0.043208102 0.069695495 -34.840742 48.329118 6744.5961 1.3606958e+08 0.039259204 0.078254487 -34.942026 48.208542 6746.7470 1.3104930e+08 0.035544701 0.070302035 -35.043310 48.087965 6748.8980 1.2782689e+08 0.034706319 0.071741219 -35.140090 47.967388 6751.0489 1.2084465e+08 0.031828299 0.073732355 -35.236552 47.846812 6753.1999 1.1592891e+08 0.029171767 0.073624065 -35.333014 47.726235 6755.3508 1.1103694e+08 0.027243989 0.074451544 -35.429476 47.605658 6757.5017 1.0497088e+08 0.025528495 0.075217433 -35.513121 47.496948 6759.6527 1.0456515e+08 0.026435154 0.075977454 -35.593303 47.391445 6761.8036 1.0368654e+08 0.029475034 0.078034618 -35.680284 47.279647 6763.9545 99228966. 0.033088424 0.079344847 -35.776745 47.159070 6766.1055 96348166. 0.034775681 0.079952347 -35.871546 47.038493 6768.2564 93183239. 0.031491279 0.081778678 -35.963184 46.917917 6770.4074 89205742. 0.027146195 0.087867716 -36.054822 46.797340 6772.5583 88469219. 0.023328259 0.093084685 -36.146462 46.676763 6774.7092 81811734. 0.019539581 0.098301653 -36.237148 46.556186 6776.8602 78483029. 0.015773520 0.10351862 -36.323964 46.435610 6779.0111 79007098. 0.012029436 0.10873559 -36.411378 46.315033 6781.1620 75744792. 0.0082955917 0.11395256 -36.503016 46.194455 6783.3130 74085171. 0.0045605649 0.11916953 -36.594409 46.073878 6785.4639 67720540. 0.00082051294 0.12438650 -36.681225 45.953301 6787.6149 63436776. -0.0029244265 0.12960346 -36.768040 45.832724 6789.7658 62661182. -0.0066754273 0.13482043 -36.854856 45.712148 6791.9167 60201216. -0.010444554 0.14003740 -36.941671 45.591571 6794.0677 58921837. -0.014234842 0.14525437 -37.028486 45.470994 6796.2186 57664631. -0.018064405 0.15047134 -37.115302 45.350418 6798.3695 55377035. -0.021959047 0.15568831 -37.202117 45.229841 6800.5205 52951596. -0.025965105 0.16090527 -37.288932 45.109264 6802.6714 51128768. -0.030158881 0.16612224 -37.372095 44.988687 6804.8224 48068992. -0.035221778 0.17133921 -37.454087 44.868109 6806.9733 46459230. -0.046132371 0.17655618 -37.545428 44.733785 6809.1242 46346309. -0.044054891 0.18177315 -37.641089 44.593108 6811.2752 46516420. -0.035538341 0.18699012 -37.724354 44.470659