# # 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 = 47.554976 km # Date (UTC) = 2016-12-02T10:22:17.816 # Date (julian) = 2457724.93215065 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6511.1875 5.6486014e+10 0.10580814 0.035656773 101.21053 25.442086 6513.5087 5.0489650e+10 0.11721666 0.036356721 101.26025 25.326083 6515.8299 4.4878896e+10 0.12873588 0.037056668 101.31490 25.198567 6518.1511 3.9815765e+10 0.14039838 0.037756615 101.36954 25.071080 6520.4723 3.5227972e+10 0.15219557 0.038456563 101.41818 24.957590 6522.7934 3.1547106e+10 0.16207363 0.039125022 101.46675 24.844245 6525.1146 2.8537445e+10 0.16829409 0.039769133 101.51322 24.730893 6527.4358 2.6015053e+10 0.17259276 0.041032873 101.55775 24.617532 6529.7570 2.3651536e+10 0.17622715 0.043441610 101.60281 24.503444 6532.0782 2.1295621e+10 0.17903520 0.046749502 101.65746 24.375928 6534.3994 1.9020870e+10 0.17974158 0.048056275 101.71211 24.248412 6536.7206 1.6997670e+10 0.17957565 0.048435196 101.76156 24.133021 6539.0417 1.5381865e+10 0.17914874 0.049694149 101.81014 24.019677 6541.3629 1.3996306e+10 0.17798367 0.051208836 101.85930 23.902627 6543.6841 1.2648172e+10 0.17598329 0.051561440 101.90939 23.779665 6546.0053 1.1360028e+10 0.17330092 0.052468881 101.95920 23.658525 6548.3265 1.0231487e+10 0.17112263 0.053765143 102.00778 23.545180 6550.6477 9.3227739e+09 0.16763171 0.055147529 102.05636 23.431834 6552.9688 8.5418527e+09 0.16394935 0.055342908 102.10603 23.308285 6555.2900 7.7953728e+09 0.15994522 0.054609666 102.15613 23.180751 6557.6112 7.1124471e+09 0.15634041 0.053482993 102.20332 23.062767 6559.9324 6.5232287e+09 0.15313630 0.052281939 102.24785 22.953470 6562.2536 6.0254714e+09 0.14960656 0.050638602 102.29291 22.843201 6564.5748 5.5300914e+09 0.14639341 0.048511109 102.34757 22.715685 6566.8960 5.0511780e+09 0.14392057 0.046676042 102.40222 22.588169 6569.2171 4.6172041e+09 0.14157827 0.044866557 102.44818 22.476276 6571.5383 4.2579474e+09 0.13973337 0.044356246 102.49271 22.366979 6573.8595 3.9832361e+09 0.13695281 0.042967739 102.53724 22.256114 6576.1807 3.7466136e+09 0.13418640 0.041163400 102.58177 22.142769 6578.5019 3.5273677e+09 0.13103735 0.037857073 102.62629 22.029425 6580.8231 3.2892664e+09 0.12797375 0.035760114 102.67593 21.907263 6583.1443 3.0458006e+09 0.12555496 0.034948648 102.72602 21.784301 6585.4654 2.8125219e+09 0.12287600 0.033598660 102.77211 21.668262 6587.7866 2.6254373e+09 0.12041519 0.033332657 102.81664 21.554902 6590.1078 2.4732723e+09 0.11740358 0.030861512 102.86257 21.439131 6592.4290 2.3160184e+09 0.11401602 0.027656835 102.91267 21.316170 6594.7502 2.1582921e+09 0.11073710 0.025760706 102.96246 21.193741 6597.0714 2.0086748e+09 0.10719833 0.025700205 103.00699 21.080395 6599.3926 1.8834125e+09 0.10463913 0.024953341 103.05152 20.967050 6601.7137 1.7727534e+09 0.10335003 0.027381823 103.09664 20.848080 6604.0349 1.6554372e+09 0.10101856 0.026092016 103.14218 20.725118 6606.3561 1.5424348e+09 0.10009786 0.026864036 103.18732 20.607473 6608.6773 1.4457953e+09 0.097212451 0.023714464 103.23185 20.498176 6610.9985 1.3627631e+09 0.094238570 0.024957009 103.27638 20.388878 6613.3197 1.2801010e+09 0.093512340 0.023690878 103.32603 20.262826 6615.6409 1.2001237e+09 0.092334340 0.023271249 103.37613 20.135292 6617.9620 1.1212716e+09 0.091855099 0.023758211 103.41928 20.020948 6620.2832 1.0581674e+09 0.091326414 0.024858467 103.45976 19.911651 6622.6044 1.0004509e+09 0.090106958 0.024597118 103.50267 19.798898 6624.9256 9.3702919e+08 0.088799684 0.025357778 103.55276 19.675936 6627.2468 8.8011518e+08 0.086924922 0.025412139 103.60231 19.553755 6629.5680 8.2543588e+08 0.085922681 0.026006414 103.64279 19.444459 6631.8892 7.8316927e+08 0.084182391 0.026021086 103.68327 19.335162 6634.2103 7.3874650e+08 0.082745563 0.026342186 103.72672 19.217847 6636.5315 6.9529799e+08 0.081292707 0.026343339 103.77227 19.094886 6638.8527 6.5250944e+08 0.080202921 0.025634492 103.81742 18.975678 6641.1739 6.1583505e+08 0.080802783 0.025148891 103.86195 18.862317 6643.4951 5.8461303e+08 0.080062324 0.025267370 103.90649 18.748956 6645.8163 5.5832989e+08 0.078833673 0.025834075 103.95195 18.626753 6648.1375 5.3178534e+08 0.077626538 0.027056296 103.99749 18.503791 6650.4586 5.0304165e+08 0.076771045 0.026360232 104.04303 18.380831 6652.7798 4.7480642e+08 0.076181102 0.027465082 104.08857 18.257870 6655.1010 4.4545694e+08 0.074840968 0.027651954 104.13143 18.142143 6657.4222 4.2286916e+08 0.072879337 0.029390844 104.17191 18.032845 6659.7434 4.0329519e+08 0.071443079 0.031679528 104.21269 17.922741 6662.0646 3.8777371e+08 0.070071888 0.033008046 104.25823 17.799779 6664.3858 3.7122884e+08 0.069140307 0.030794640 104.30377 17.676817 6666.7069 3.4828429e+08 0.069262406 0.027046351 104.34494 17.565651 6669.0281 3.3364276e+08 0.068139410 0.028326819 104.38543 17.456354 6671.3493 3.1831575e+08 0.068378986 0.026870326 104.42790 17.343470 6673.6705 3.0298202e+08 0.067834467 0.028461989 104.47345 17.225045 6675.9917 2.8865798e+08 0.065602680 0.031697786 104.51899 17.105725 6678.3129 2.6611945e+08 0.064652470 0.030727357 104.56453 16.982765 6680.6340 2.5397889e+08 0.065224213 0.029578334 104.61007 16.859804 6682.9552 2.4163332e+08 0.065931745 0.031154379 104.65561 16.736843 6685.2764 2.2884611e+08 0.065649254 0.032996806 104.70115 16.613881 6687.5976 2.1361761e+08 0.063491801 0.034009609 104.74262 16.501930 6689.9188 2.0169120e+08 0.061167219 0.033188964 104.78310 16.392632 6692.2400 1.9053037e+08 0.060001591 0.032486658 104.82528 16.278751 6694.5612 1.7982728e+08 0.059126524 0.030474528 104.87082 16.155789 6696.8823 1.7069351e+08 0.058614783 0.030042383 104.91573 16.033464 6699.2035 1.5870947e+08 0.057125190 0.031402629 104.95671 15.915057 6701.5247 1.5107562e+08 0.055152510 0.032179358 104.99770 15.796650 6703.8459 1.4428860e+08 0.055120900 0.035791957 105.04298 15.673945 6706.1671 1.3931406e+08 0.055045712 0.038737211 105.08852 15.550984 6708.4883 1.3533136e+08 0.054574275 0.040575293 105.13066 15.428022 6710.8095 1.3182933e+08 0.053038850 0.040654937 105.17165 15.305060 6713.1306 1.2284073e+08 0.050950702 0.044159144 105.21236 15.191872 6715.4518 1.1813668e+08 0.049030440 0.047840709 105.25284 15.086609 6717.7730 1.1528291e+08 0.047060330 0.049826454 105.29374 14.979891 6720.0942 1.0979776e+08 0.045988257 0.050408851 105.33929 14.856930 6722.4154 1.0841189e+08 0.046031412 0.050091676 105.38483 14.733969 6724.7366 1.0052435e+08 0.042428827 0.043775799 105.42633 14.611007 6727.0578 96799397. 0.040373352 0.040883435 105.46732 14.488046 6729.3789 94098315. 0.040102638 0.040792851 105.50831 14.368230 6731.7001 88557978. 0.038429490 0.043143413 105.54929 14.249823 6734.0213 83903943. 0.037515779 0.049352317 105.59253 14.129162 6736.3425 77005399. 0.039574086 0.051649851 105.63807 14.006200 6738.6637 78587685. 0.041056250 0.060974990 105.68225 13.884600 6740.9849 79096226. 0.040397317 0.065732846 105.72324 13.766193 6743.3061 78548168. 0.036575694 0.073112094 105.76423 13.647786 6745.6272 73056183. 0.034116021 0.078830574 105.80522 13.529379 6747.9484 67121218. 0.029906444 0.067034654 105.84620 13.410971 6750.2696 64885755. 0.027194653 0.072464508 105.89133 13.288416 6752.5908 65692540. 0.024346761 0.073450811 105.93687 13.165436 6754.9120 65278183. 0.022333975 0.074746885 105.97917 13.045712 6757.2332 60487019. 0.018838399 0.076032447 106.02016 12.927305 6759.5544 54930744. 0.017921744 0.075953730 106.06417 12.800166 6761.8755 45684116. 0.015615684 0.078040562 106.11101 12.664840 6764.1967 41760870. -0.0086725357 0.079492710 106.15438 12.536868 6766.5179 40962193. 0.012614248 0.080885274 106.19536 12.413907 6768.8391 45319581. 0.054095586 0.083875296 106.23635 12.292763