# # 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 = 42.746724 km # Date (UTC) = 2013-01-21T09:28:00.230 # Date (julian) = 2456313.89444711 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.5174 6.6456574e+10 0.060006060 0.033343882 108.07004 47.744953 6505.0194 6.2420118e+10 0.067278896 0.033796809 108.15647 47.638880 6506.5214 5.7813525e+10 0.074532515 0.034249735 108.24291 47.529932 6508.0235 5.3790322e+10 0.082024299 0.034702662 108.32936 47.419909 6509.5255 5.0144526e+10 0.089726076 0.035155588 108.41509 47.310605 6511.0275 4.6603234e+10 0.097533878 0.035608515 108.49761 47.204511 6512.5295 4.3229349e+10 0.10546366 0.036061441 108.58012 47.098416 6514.0315 4.0233612e+10 0.11360521 0.036514367 108.65512 46.999843 6515.5335 3.7972167e+10 0.12213139 0.036967294 108.72585 46.905539 6517.0355 3.6110626e+10 0.13092095 0.037420220 108.79657 46.811235 6518.5375 3.4323471e+10 0.13982718 0.037873147 108.87256 46.709046 6520.0395 3.2382663e+10 0.14873709 0.038326073 108.95114 46.602951 6521.5415 3.0259002e+10 0.15761243 0.038779000 109.03022 46.496371 6523.0435 2.8156276e+10 0.16359792 0.039189903 109.11274 46.386348 6524.5455 2.6166033e+10 0.16851084 0.039620767 109.19526 46.276325 6526.0476 2.4453821e+10 0.17132968 0.039717938 109.26900 46.177353 6527.5496 2.3086642e+10 0.17614978 0.041115456 109.33636 46.086417 6529.0516 2.1998145e+10 0.17843087 0.042317924 109.40372 45.995482 6530.5536 2.0928301e+10 0.18094043 0.044603689 109.47791 45.892920 6532.0556 1.9697861e+10 0.18315897 0.046730623 109.55648 45.782919 6533.5576 1.8408485e+10 0.18305280 0.047756546 109.63412 45.674145 6535.0596 1.7290942e+10 0.18317080 0.048198444 109.69811 45.583210 6536.5616 1.6426937e+10 0.18162723 0.048292983 109.76210 45.492275 6538.0636 1.5724296e+10 0.18129839 0.049187657 109.82748 45.399521 6539.5656 1.4938837e+10 0.18051917 0.050328296 109.90607 45.289498 6541.0676 1.4095593e+10 0.17868268 0.051304597 109.98466 45.179475 6542.5696 1.3269165e+10 0.17744704 0.051218503 110.05521 45.079956 6544.0716 1.2620850e+10 0.17560506 0.051702466 110.11921 44.989021 6545.5737 1.2115864e+10 0.17420773 0.052460706 110.18320 44.898086 6547.0757 1.1636901e+10 0.17305009 0.053316136 110.25339 44.796057 6548.5777 1.1057197e+10 0.17115697 0.053840157 110.32805 44.686034 6550.0797 1.0428202e+10 0.17031561 0.055005309 110.40232 44.576703 6551.5817 9.8672085e+09 0.16852908 0.055439930 110.46631 44.485768 6553.0837 9.4288314e+09 0.16698499 0.055292998 110.53030 44.394832 6554.5857 9.0678551e+09 0.16506569 0.054844671 110.59474 44.302615 6556.0877 8.6675947e+09 0.16267119 0.054000231 110.66547 44.192591 6557.5897 8.2123175e+09 0.16113197 0.053496474 110.73620 44.082566 6559.0917 7.7680330e+09 0.15854462 0.052376829 110.80166 43.982511 6560.5937 7.4175864e+09 0.15613143 0.051738987 110.86228 43.891575 6562.0957 7.1421790e+09 0.15361261 0.050788807 110.92290 43.800640 6563.5977 6.8934802e+09 0.15058389 0.049236915 110.99129 43.699148 6565.0998 6.5762244e+09 0.14868144 0.048205128 111.06595 43.589124 6566.6018 6.2301364e+09 0.14663091 0.046842471 111.14041 43.479322 6568.1038 5.9072517e+09 0.14535247 0.045676276 111.19772 43.388322 6569.6058 5.6526240e+09 0.14404650 0.044891851 111.25498 43.297386 6571.1078 5.4536634e+09 0.14251756 0.044473838 111.31236 43.206320 6572.6098 5.2523684e+09 0.14123104 0.043880945 111.37299 43.112017 6574.1118 5.0744664e+09 0.13916396 0.042801309 111.43361 43.017714 6575.6138 4.8979955e+09 0.13755249 0.041758868 111.49494 42.922588 6577.1158 4.6908918e+09 0.13585711 0.040038458 111.56567 42.816493 6578.6178 4.4704923e+09 0.13371885 0.037674003 111.63640 42.710399 6580.1198 4.2268547e+09 0.13227844 0.036410014 111.70005 42.610503 6581.6218 4.0397308e+09 0.13038788 0.035408308 111.75729 42.516216 6583.1238 3.8865742e+09 0.12882366 0.034958982 111.81454 42.421930 6584.6259 3.7490502e+09 0.12705731 0.034174586 111.87179 42.327633 6586.1279 3.6310256e+09 0.12503484 0.033169643 111.92905 42.233329 6587.6299 3.5075121e+09 0.12366891 0.033297924 111.98631 42.139025 6589.1319 3.3939135e+09 0.12169974 0.032784349 112.04916 42.037811 6590.6339 3.2459404e+09 0.11973086 0.029882946 112.11596 41.931718 6592.1359 3.0909406e+09 0.11786966 0.027941536 112.18236 41.826112 6593.6379 2.9427079e+09 0.11590145 0.026509169 112.23962 41.731808 6595.1399 2.8200083e+09 0.11381844 0.025638080 112.29687 41.637504 6596.6419 2.7200244e+09 0.11144054 0.025724355 112.35388 41.543443 6598.1439 2.6289503e+09 0.10982281 0.025338452 112.40777 41.452507 6599.6459 2.5566729e+09 0.10893829 0.024968580 112.46166 41.361571 6601.1479 2.4863444e+09 0.10868509 0.027115359 112.51648 41.268671 6602.6499 2.3918860e+09 0.10808890 0.026961997 112.57934 41.158648 6604.1520 2.2827996e+09 0.10717651 0.026161501 112.64221 41.048625 6605.6540 2.1734065e+09 0.10719722 0.027213664 112.70195 40.949254 6607.1560 2.0819266e+09 0.10619067 0.025399018 112.75920 40.858318 6608.6580 2.0126565e+09 0.10404364 0.023714975 112.81646 40.767383 6610.1600 1.9357243e+09 0.10217451 0.024155839 112.87173 40.674465 6611.6620 1.8671312e+09 0.10039286 0.024536301 112.92562 40.580162 6613.1640 1.8038297e+09 0.099797165 0.023633762 112.97951 40.485859 6614.6660 1.7515597e+09 0.098860442 0.023481640 113.03131 40.393643 6616.1680 1.6988735e+09 0.097579166 0.023308669 113.08183 40.302707 6617.6700 1.6422826e+09 0.097122091 0.023661393 113.13235 40.211772 6619.1720 1.5865220e+09 0.096472595 0.024567422 113.18506 40.118646 6620.6740 1.5347487e+09 0.095879369 0.024984405 113.23895 40.024343 6622.1760 1.4940819e+09 0.094803470 0.024711135 113.29283 39.930041 6623.6781 1.4488387e+09 0.093317971 0.024743034 113.35284 39.827702 6625.1801 1.3941896e+09 0.092522781 0.025612471 113.41571 39.721608 6626.6821 1.3344447e+09 0.091002617 0.025721885 113.47690 39.617123 6628.1841 1.2745643e+09 0.090118785 0.025777832 113.52742 39.522819 6629.6861 1.2260641e+09 0.089104635 0.025985059 113.57794 39.428515 6631.1881 1.1875709e+09 0.087745486 0.025949872 113.62846 39.334776 6632.6901 1.1536183e+09 0.086911983 0.026115094 113.67898 39.243842 6634.1921 1.1210201e+09 0.085914850 0.026340856 113.72949 39.152908 6635.6941 1.0836059e+09 0.085082082 0.026503881 113.78001 39.061305 6637.1961 1.0462344e+09 0.084367702 0.026065357 113.83053 38.967001 6638.6981 1.0120120e+09 0.083748389 0.025641227 113.88105 38.872698 6640.2001 9.8643720e+08 0.084180739 0.025246165 113.93350 38.775692 6641.7021 9.5818768e+08 0.084331723 0.025150685 113.99244 38.669597 6643.2042 9.2435286e+08 0.083968778 0.025223443 114.05139 38.563502 6644.7062 8.8595914e+08 0.083397454 0.025419927 114.10457 38.467780 6646.2082 8.5450889e+08 0.082654189 0.026027902 114.15509 38.376844 6647.7102 8.3242426e+08 0.082003292 0.026811691 114.20561 38.285909 6649.2122 8.0735492e+08 0.081161713 0.027341202 114.25372 38.192566 6650.7142 7.8609217e+08 0.080949045 0.026418736 114.30087 38.098263 6652.2162 7.6338405e+08 0.080613128 0.027310006 114.34802 38.003961 6653.7182 7.4108951e+08 0.080134522 0.027892352 114.39768 37.912170 6655.2202 7.2544000e+08 0.079069386 0.027701210 114.44820 37.821234 6656.7222 7.0554072e+08 0.077641011 0.028657308 114.49872 37.730299 6658.2242 6.9134301e+08 0.076592757 0.030458757 114.54662 37.636761 6659.7262 6.7382265e+08 0.075499758 0.031683104 114.59376 37.542474 6661.2282 6.5154178e+08 0.074397991 0.032651200 114.64091 37.448188 6662.7303 6.3219264e+08 0.073516295 0.032634556 114.69440 37.344370 6664.2323 6.1033306e+08 0.072566246 0.031356253 114.74941 37.238275 6665.7343 5.9413385e+08 0.072649465 0.027344004 114.80236 37.136155 6667.2363 5.7432578e+08 0.072294071 0.027190246 114.84952 37.045220 6668.7383 5.5396795e+08 0.071453983 0.028124104 114.89667 36.954285 6670.2403 5.3916803e+08 0.071488589 0.027217309 114.94382 36.862363 6671.7423 5.1921920e+08 0.071330406 0.026875927 114.99097 36.768060 6673.2443 5.0204080e+08 0.070981038 0.027824598 115.03812 36.673757 6674.7463 4.8911499e+08 0.069860241 0.029584357 115.08527 36.580546 6676.2483 4.7424315e+08 0.068113146 0.031873767 115.13242 36.489610 6677.7503 4.6400759e+08 0.067339941 0.031291544 115.17958 36.398675 6679.2523 4.4962287e+08 0.066893768 0.030059250 115.22553 36.307740 6680.7543 4.3895065e+08 0.067542666 0.029604311 115.26931 36.216804 6682.2564 4.2948545e+08 0.067850407 0.030620407 115.31310 36.125869 6683.7584 4.2094063e+08 0.067817375 0.032299969 115.36121 36.027573 6685.2604 4.0641833e+08 0.067469775 0.032979852 115.41623 35.917551 6686.7624 3.8454868e+08 0.066125604 0.034204647 115.47124 35.807528 6688.2644 3.6517645e+08 0.064157787 0.033846220 115.51681 35.713551 6689.7664 3.4881453e+08 0.062596673 0.033326148 115.56059 35.622615 6691.2684 3.4089348e+08 0.061643869 0.032937938 115.60438 35.531679 6692.7704 3.3313418e+08 0.060855085 0.031870700 115.64816 35.440744 6694.2724 3.2489344e+08 0.059916446 0.030879221 115.69194 35.349809 6695.7744 3.1551739e+08 0.059615915 0.029717221 115.73573 35.258873 6697.2764 3.0630484e+08 0.058885934 0.030126248 115.77951 35.164899 6698.7784 2.9962936e+08 0.057764028 0.031286315 115.82330 35.070597 6700.2804 2.8483078e+08 0.056419243 0.030875734 115.86708 34.976294 6701.7825 2.7184744e+08 0.055003372 0.032557529 115.91086 34.885134 6703.2845 2.6690266e+08 0.055094007 0.034387051 115.95465 34.794199 6704.7865 2.6024825e+08 0.055068103 0.036563752 115.99843 34.703264 6706.2885 2.5700901e+08 0.054800636 0.038948478 116.04925 34.597713 6707.7905 2.4637244e+08 0.054427969 0.040073590 116.10033 34.491619 6709.2925 2.3119420e+08 0.053557794 0.040946503 116.14835 34.391879 6710.7945 2.1928462e+08 0.052199315 0.040652009 116.19214 34.300943 6712.2965 2.0950849e+08 0.050618660 0.042380477 116.23592 34.210008 6713.7985 1.9833148e+08 0.048984762 0.046574687 116.27971 34.117556 6715.3005 1.8786161e+08 0.047745405 0.047685956 116.32349 34.023254 6716.8025 1.8340703e+08 0.046380158 0.049583416 116.36727 33.928951 6718.3045 1.7929323e+08 0.045002246 0.050286712 116.40944 33.836268 6719.8065 1.7944618e+08 0.044521817 0.050603560 116.44985 33.745333 6721.3086 1.7525808e+08 0.044957737 0.050396868 116.49027 33.654397 6722.8106 1.6796292e+08 0.044341145 0.049603137 116.53614 33.555704 6724.3126 1.6248321e+08 0.042290642 0.047316495 116.58723 33.449610 6725.8146 1.5698525e+08 0.039806070 0.041067192 116.63831 33.343516 6727.3166 1.5271950e+08 0.039175266 0.040538603 116.67908 33.252078 6728.8186 1.4688062e+08 0.039168868 0.040788316 116.71949 33.161143 6730.3206 1.3953588e+08 0.038070714 0.040818486 116.75991 33.070208 6731.8226 1.3114324e+08 0.036972175 0.043387169 116.80032 32.979287 6733.3246 1.2218044e+08 0.036352338 0.045686748 116.84072 32.888367 6734.8266 1.1246151e+08 0.036406981 0.049303864 116.88132 32.797021 6736.3286 1.0788634e+08 0.037594787 0.051597421 116.92848 32.690926 6737.8306 1.0111150e+08 0.038098179 0.056781591 116.97563 32.584832 6739.3326 94593954. 0.037483987 0.063233650 117.01953 32.484435 6740.8347 84541569. 0.034940031 0.065476228 117.05994 32.390133 6742.3367 72846177. 0.029270397 0.069431095 117.10036 32.295830 6743.8387 65564965. 0.017982890 0.076705093 117.14078 32.203258 6745.3407 62258987. -0.024859704 0.078710105 117.18119 32.112323 6746.8427 60915733. 0.0034713355 0.069190103 117.22160 32.021388 6748.3447 63805818. 0.073463312 0.068830349 117.26569 31.922193