# # 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 = 45.625663 km # Date (UTC) = 2016-12-07T09:22:04.216 # Date (julian) = 2457729.89032657 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.9386 7.5282399e+10 0.077540291 0.034073968 116.30735 25.659511 6508.1980 6.6672391e+10 0.088271242 0.034755297 116.35502 25.549567 6510.4575 5.9079515e+10 0.099203478 0.035436627 116.40625 25.443177 6512.7169 5.2340531e+10 0.11033308 0.036117956 116.45748 25.336788 6514.9763 4.6576565e+10 0.12171306 0.036799285 116.50649 25.228191 6517.2358 4.1515033e+10 0.13332920 0.037480614 116.55377 25.117860 6519.4952 3.7143616e+10 0.14521663 0.038161944 116.60106 25.007617 6521.7547 3.3341000e+10 0.15736559 0.038843273 116.64835 24.901213 6524.0141 2.9986432e+10 0.16387499 0.039431975 116.69564 24.794809 6526.2736 2.6858363e+10 0.16894177 0.039954882 116.74579 24.679812 6528.5330 2.3878204e+10 0.17364972 0.041865315 116.79899 24.555688 6530.7924 2.1241131e+10 0.17684537 0.044938108 116.85083 24.435627 6533.0519 1.8956103e+10 0.18017762 0.047541639 116.89811 24.329238 6535.3113 1.7109121e+10 0.18088781 0.048089241 116.94540 24.222848 6537.5708 1.5519291e+10 0.18111277 0.048954322 116.99269 24.113735 6539.8302 1.4072845e+10 0.18083142 0.050648590 117.03997 24.003404 6542.0897 1.2801220e+10 0.17823567 0.051036280 117.08726 23.893676 6544.3491 1.1701544e+10 0.17512263 0.051927552 117.13455 23.787271 6546.6086 1.0727960e+10 0.17167522 0.052965267 117.18183 23.680867 6548.8680 9.8691005e+09 0.16811097 0.053926859 117.22912 23.572045 6551.1274 9.1023646e+09 0.16529511 0.055280484 117.27641 23.461715 6553.3869 8.4044007e+09 0.16303616 0.055140586 117.32369 23.351693 6555.6463 7.8069182e+09 0.16018257 0.054310295 117.37098 23.245303 6557.9058 7.2475581e+09 0.15754995 0.053298367 117.41826 23.138913 6560.1652 6.7079120e+09 0.15441567 0.052125347 117.46635 23.025337 6562.4247 6.1613523e+09 0.15110134 0.050475825 117.51511 22.905646 6564.6841 5.6368308e+09 0.14807750 0.048461562 117.56345 22.788618 6566.9435 5.1636683e+09 0.14557242 0.046649123 117.61073 22.678288 6569.2030 4.7618729e+09 0.14309022 0.044865636 117.65802 22.567958 6571.4624 4.4347048e+09 0.14103194 0.044376976 117.70236 22.460559 6573.7219 4.1311774e+09 0.13824832 0.043078193 117.74571 22.354155 6575.9813 3.8581511e+09 0.13536204 0.041390135 117.78906 22.247754 6578.2408 3.6108649e+09 0.13231268 0.038269420 117.83241 22.141364 6580.5002 3.3896979e+09 0.12903000 0.036058489 117.87575 22.034973 6582.7597 3.1906357e+09 0.12609314 0.035087072 117.92174 21.928583 6585.0191 3.0259664e+09 0.12300757 0.033955507 117.96903 21.822193 6587.2785 2.8570861e+09 0.11987174 0.033220083 118.01651 21.713437 6589.5380 2.6696072e+09 0.11679057 0.031978668 118.06527 21.589314 6591.7974 2.4830872e+09 0.11323000 0.028302107 118.11404 21.465191 6594.0569 2.2976795e+09 0.10972364 0.026141305 118.15805 21.356618 6596.3163 2.1512719e+09 0.10597681 0.025725836 118.20140 21.250214 6598.5758 2.0290327e+09 0.10337065 0.025132278 118.24474 21.143814 6600.8352 1.9177752e+09 0.10286177 0.026706894 118.28809 21.037424 6603.0946 1.8122633e+09 0.10199583 0.026607244 118.33143 20.931034 6605.3541 1.7102951e+09 0.10142823 0.026962095 118.37477 20.824644 6607.6135 1.6174957e+09 0.099801153 0.024495500 118.41812 20.718254 6609.8730 1.5268965e+09 0.096899762 0.023965246 118.46289 20.608347 6612.1324 1.4364642e+09 0.094663986 0.024221812 118.51166 20.488656 6614.3919 1.3412007e+09 0.093856468 0.023670514 118.56036 20.369115 6616.6513 1.2455132e+09 0.092651983 0.023384522 118.60372 20.262691 6618.9108 1.1675294e+09 0.092108881 0.024458521 118.64706 20.156301 6621.1702 1.1062469e+09 0.091339033 0.025033035 118.69041 20.049904 6623.4296 1.0538986e+09 0.089668656 0.024651000 118.73376 19.943500 6625.6891 1.0023089e+09 0.088341083 0.026219886 118.77711 19.837095 6627.9485 9.4251766e+08 0.086596079 0.025683211 118.82137 19.718291 6630.2080 8.8145631e+08 0.085210424 0.025928814 118.86570 19.598600 6632.4674 8.2506874e+08 0.083578827 0.026088392 118.90936 19.490590 6634.7269 7.7844673e+08 0.082077807 0.026379863 118.95271 19.388141 6636.9863 7.3877151e+08 0.080441327 0.026166732 118.99605 19.285141 6639.2457 7.0393911e+08 0.079412352 0.025540240 119.03940 19.178751 6641.5052 6.7203893e+08 0.079778146 0.025150016 119.08274 19.072361 6643.7646 6.3783770e+08 0.078741283 0.025308068 119.12668 18.957966 6646.0241 6.0192855e+08 0.077594886 0.025932609 119.17101 18.838276 6648.2835 5.6514814e+08 0.076597844 0.027154073 119.21500 18.723182 6650.5430 5.3447408e+08 0.076126647 0.026379537 119.25835 18.616778 6652.8024 5.1050599e+08 0.075965976 0.027471295 119.30170 18.510374 6655.0619 4.8417848e+08 0.075075872 0.027635773 119.34584 18.393228 6657.3213 4.5773791e+08 0.073469796 0.029273802 119.39017 18.273537 6659.5807 4.3489111e+08 0.072225086 0.031713456 119.43396 18.163375 6661.8402 4.1016380e+08 0.071024875 0.032962872 119.47730 18.060925 6664.0996 3.8948068e+08 0.069900564 0.031841565 119.52058 17.958413 6666.3591 3.6623043e+08 0.070182675 0.026978564 119.55999 17.852027 6668.6185 3.4814952e+08 0.069300935 0.028018114 119.59939 17.745638 6670.8780 3.3335256e+08 0.069315666 0.026921889 119.64115 17.632903 6673.1374 3.1674560e+08 0.069054129 0.027664708 119.68548 17.513212 6675.3968 3.0045393e+08 0.067339819 0.030558458 119.72872 17.397333 6677.6563 2.8659055e+08 0.065808108 0.031425238 119.76813 17.294870 6679.9157 2.7304850e+08 0.065984923 0.029511053 119.80754 17.192407 6682.1752 2.5765151e+08 0.066881577 0.030558383 119.85334 17.078165 6684.4346 2.4431922e+08 0.067096136 0.032676147 119.90210 16.958474 6686.6941 2.3075991e+08 0.065931061 0.034164900 119.94686 16.846160 6688.9535 2.2439561e+08 0.062990472 0.034005292 119.98626 16.743710 6691.2129 2.1804954e+08 0.062036377 0.032951021 120.02567 16.641260 6693.4724 2.0902168e+08 0.061130421 0.031442029 120.06946 16.523465 6695.7318 2.0010938e+08 0.060830863 0.029725044 120.11378 16.403776 6697.9913 1.9017088e+08 0.060168896 0.030216714 120.15812 16.286897 6700.2507 1.8143832e+08 0.058603853 0.030853687 120.20245 16.171639 6702.5102 1.7175044e+08 0.057642715 0.033284101 120.24492 16.059738 6704.7696 1.6058740e+08 0.058191716 0.036555473 120.28432 15.953348 6707.0291 1.5312458e+08 0.058069384 0.040182664 120.32372 15.846958 6709.2885 1.4776440e+08 0.057549371 0.040949044 120.36727 15.733098 6711.5479 1.4327557e+08 0.055751262 0.041315641 120.41161 15.617823 6713.8074 1.3760736e+08 0.053694852 0.046606766 120.45334 15.502558 6716.0668 1.2800438e+08 0.052065854 0.048499794 120.49324 15.387301 6718.3263 1.2122266e+08 0.049960771 0.050320560 120.53297 15.274964 6720.5857 1.1660213e+08 0.049618465 0.050351901 120.57238 15.168574 6722.8452 1.1173331e+08 0.049062182 0.049560365 120.61179 15.062184 6725.1046 1.0349255e+08 0.044951177 0.041510679 120.65509 14.948775 6727.3640 94302119. 0.043700931 0.040475370 120.69942 14.833517 6729.6235 84842759. 0.043074926 0.040629854 120.74375 14.718260 6731.8829 79978953. 0.041415135 0.043507230 120.78808 14.603003 6734.1424 78485496. 0.040617640 0.049345033 120.83117 14.487745 6736.4018 73581131. 0.042611011 0.051874122 120.87106 14.372487 6738.6613 69490188. 0.043809953 0.060961669 120.91107 14.257122 6740.9207 65986511. 0.043017934 0.065623238 120.95540 14.137431 6743.1802 62702149. 0.039353741 0.072262755 120.99973 14.017741 6745.4396 62542233. 0.036677966 0.078751690 121.04066 13.901442 6747.6990 62052105. 0.032531123 0.067120508 121.08056 13.786167 6749.9585 62589995. 0.030258493 0.072015499 121.12273 13.670901 6752.2179 58071298. 0.027613375 0.073882292 121.16706 13.555644 6754.4774 54286870. 0.026453567 0.075445796 121.21025 13.440387 6756.7368 51947904. 0.023848243 0.076062846 121.25015 13.325128 6758.9963 51095390. 0.024670784 0.075812046 121.29007 13.209870 6761.2557 51204229. 0.025938197 0.077989351 121.33438 13.094612 6763.5151 47087724. 0.030858814 0.078006657 121.37871 12.979355 6765.7746 45084216. 0.032339823 0.079672598 121.41974 12.864097 6768.0340 43389021. 0.025444828 0.080978490 121.45963 12.748840 6770.2935 45801567. 0.024286613 0.087591515 121.50170 12.633582 6772.5529 45808743. 0.027093074 0.093071659 121.54603 12.518325