# # 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 = 36.999249 km # Date (UTC) = 2011-01-17T07:32:02.404 # Date (julian) = 2455578.81391671 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.9009 1.4082799e+11 0.082996410 0.034364165 1.7939617 45.640848 6509.1102 1.0992511e+11 0.092841061 0.035030375 1.6948827 45.507091 6511.3195 9.0326721e+10 0.10302400 0.035696586 1.5925940 45.373334 6513.5288 7.6006318e+10 0.11348152 0.036362796 1.4885611 45.239577 6515.7381 6.4545327e+10 0.12415604 0.037029006 1.3876457 45.105820 6517.9475 5.5224292e+10 0.13505989 0.037695216 1.2885664 44.972063 6520.1568 4.7753778e+10 0.14625343 0.038361426 1.1894873 44.835281 6522.3661 4.1792965e+10 0.15676831 0.039013109 1.0904083 44.696571 6524.5754 3.7089903e+10 0.16275229 0.039631362 0.99132940 44.560794 6526.7847 3.3122505e+10 0.16753368 0.040490723 0.89225050 44.427037 6528.9940 2.9590214e+10 0.17083540 0.042231006 0.79601281 44.293280 6531.2033 2.6421436e+10 0.17400917 0.045524558 0.70188749 44.159523 6533.4126 2.3640461e+10 0.17690937 0.047694924 0.60776234 44.025767 6535.6219 2.1211281e+10 0.17718841 0.047954523 0.51363733 43.892012 6537.8312 1.9038781e+10 0.17805421 0.049077098 0.41951216 43.758256 6540.0405 1.7110147e+10 0.17816019 0.050873236 0.32538684 43.624499 6542.2498 1.5371079e+10 0.17582586 0.051097079 0.23126169 43.490742 6544.4591 1.3809286e+10 0.17341964 0.052016788 0.13713670 43.356985 6546.6684 1.2399308e+10 0.17058531 0.053014525 0.043011696 43.223228 6548.8777 1.1130269e+10 0.16752988 0.053929764 -0.051113299 43.089471 6551.0870 1.0052807e+10 0.16509026 0.055266299 -0.13749947 42.963751 6553.2963 9.1971205e+09 0.16315048 0.055186105 -0.21552271 42.846716 6555.5056 8.4875714e+09 0.16060296 0.054428509 -0.29634144 42.725918 6557.7149 7.8266700e+09 0.15812526 0.053417980 -0.39046643 42.587208 6559.9242 7.1756715e+09 0.15533336 0.052282860 -0.48382350 42.449266 6562.1336 6.5410678e+09 0.15216754 0.050752824 -0.57299484 42.315509 6564.3429 5.9613173e+09 0.14898384 0.048616215 -0.66149025 42.181751 6566.5522 5.4437877e+09 0.14652718 0.046870528 -0.74570736 42.047995 6568.7615 4.9731198e+09 0.14424697 0.045071693 -0.83050826 41.914238 6570.9708 4.5384569e+09 0.14230599 0.044515382 -0.91967931 41.780481 6573.1801 4.1601315e+09 0.14005723 0.043512974 -1.0073137 41.648384 6575.3894 3.8423150e+09 0.13723251 0.041984035 -1.0810023 41.531349 6577.5987 3.5800426e+09 0.13397648 0.039279980 -1.1546909 41.414314 6579.8080 3.3487112e+09 0.13042890 0.036626308 -1.2406454 41.284031 6582.0173 3.1122863e+09 0.12708531 0.035289088 -1.3298165 41.150274 6584.2266 2.8765061e+09 0.12374961 0.034392072 -1.4151549 41.016517 6586.4359 2.6562123e+09 0.12053446 0.033165661 -1.4993720 40.882761 6588.6452 2.4500369e+09 0.11748923 0.033164460 -1.5835893 40.749005 6590.8545 2.2649934e+09 0.11365165 0.029472531 -1.6678068 40.615250 6593.0638 2.1105735e+09 0.10990561 0.027042885 -1.7410775 40.490616 6595.2731 1.9834295e+09 0.10588115 0.025651895 -1.8104312 40.369245 6597.4824 1.8773248e+09 0.10241903 0.025570490 -1.8861684 40.242555 6599.6917 1.7652874e+09 0.10075565 0.024971335 -1.9703857 40.108798 6601.9010 1.6496373e+09 0.10039469 0.027470030 -2.0525675 39.975041 6604.1103 1.5446217e+09 0.098991376 0.026136797 -2.1318307 39.841284 6606.3197 1.4359656e+09 0.098636254 0.026929558 -2.2110939 39.707528 6608.5290 1.3371337e+09 0.096129491 0.023718386 -2.2903570 39.573773 6610.7383 1.2461864e+09 0.093195772 0.024708372 -2.3659171 39.446266 6612.9476 1.1715131e+09 0.091968988 0.023612766 -2.4352711 39.329231 6615.1569 1.1122137e+09 0.090662646 0.023256358 -2.5052860 39.211081 6617.3662 1.0529023e+09 0.089413692 0.023560654 -2.5845492 39.077324 6619.5755 9.8817502e+08 0.088758791 0.024664769 -2.6638124 38.943568 6621.7848 9.1703794e+08 0.087748801 0.024829325 -2.7430757 38.809810 6623.9941 8.5209992e+08 0.085869686 0.024860121 -2.8219187 38.676547 6626.2034 7.9978769e+08 0.084605894 0.026331757 -2.8869379 38.559512 6628.4127 7.5778932e+08 0.082847668 0.025870656 -2.9519571 38.442477 6630.6220 7.1731920e+08 0.081086839 0.025929835 -3.0272676 38.313361 6632.8313 6.7189218e+08 0.079507239 0.026132026 -3.1065308 38.179604 6635.0406 6.2483465e+08 0.077930908 0.026405879 -3.1823068 38.045847 6637.2499 5.7804137e+08 0.076329438 0.026039007 -3.2566159 37.912090 6639.4592 5.3679246e+08 0.075480885 0.025463936 -3.3309255 37.778333 6641.6685 5.0042977e+08 0.075658125 0.025150571 -3.4052353 37.644575 6643.8778 4.6365601e+08 0.074562323 0.025325161 -3.4733506 37.521968 6646.0871 4.3324106e+08 0.073479445 0.025965255 -3.5383697 37.404935 6648.2964 4.0773540e+08 0.072490929 0.027162728 -3.6067307 37.281886 6650.5058 3.8087769e+08 0.072061467 0.026371018 -3.6810400 37.148130 6652.7151 3.5860749e+08 0.071805482 0.027447262 -3.7536592 37.014373 6654.9244 3.3289091e+08 0.070875084 0.027642438 -3.8230144 36.880616 6657.1337 3.0582729e+08 0.069099866 0.029056162 -3.8909711 36.752253 6659.3430 2.8708500e+08 0.067632299 0.031763054 -3.9559903 36.635218 6661.5523 2.6817660e+08 0.066246051 0.032816237 -4.0210768 36.517924 6663.7616 2.5313440e+08 0.064821373 0.032272159 -4.0904325 36.384166 6665.9709 2.4161574e+08 0.064645976 0.026956296 -4.1597882 36.250408 6668.1802 2.2605246e+08 0.063681810 0.027630233 -4.2291436 36.116651 6670.3895 2.0968838e+08 0.063039792 0.027148184 -4.2984990 35.982895 6672.5988 1.9420903e+08 0.062466795 0.027226676 -4.3678542 35.849138 6674.8081 1.7772185e+08 0.060820715 0.029636483 -4.4372094 35.715381 6677.0174 1.6734598e+08 0.058254617 0.032333464 -4.4982515 35.597657 6679.2267 1.6145875e+08 0.057521634 0.030080422 -4.5589451 35.480604 6681.4360 1.5264022e+08 0.058209588 0.029991868 -4.6252878 35.352657 6683.6453 1.4375421e+08 0.058263904 0.032134316 -4.6946311 35.218924 6685.8546 1.3240994e+08 0.057376776 0.033607541 -4.7639825 35.088317 6688.0639 1.2014217e+08 0.054434363 0.033799950 -4.8333384 34.959514 6690.2732 1.1247951e+08 0.052197410 0.033084550 -4.9026938 34.827662 6692.4825 1.0730839e+08 0.051002289 0.032204975 -4.9720490 34.693905 6694.6919 1.0435487e+08 0.050296333 0.030291358 -5.0336453 34.570121 6696.9012 1.0293891e+08 0.050073393 0.030050198 -5.0900037 34.453068 6699.1105 97511167. 0.048800294 0.031488506 -5.1486972 34.331167 6701.3198 91724899. 0.047015030 0.031878637 -5.2130986 34.197410 6703.5291 86435796. 0.047001289 0.034999144 -5.2788428 34.063660 6705.7384 82245085. 0.047157616 0.037981293 -5.3481861 33.929928 6707.9477 79254996. 0.047001094 0.040051072 -5.4162803 33.796189 6710.1570 75279092. 0.045765965 0.040527223 -5.4806821 33.662431 6712.3663 70358212. 0.043370969 0.042510043 -5.5450838 33.529834 6714.5756 67546062. 0.041081136 0.047346682 -5.6094849 33.401030 6716.7849 65380591. 0.038700831 0.049557451 -5.6738861 33.271159 6718.9942 62756824. 0.035309819 0.051360818 -5.7382874 33.137402 6721.2035 60824442. 0.034126231 0.050365218 -5.8002499 33.006936 6723.4128 58810275. 0.029515418 0.049599180 -5.8522730 32.889884 6725.6221 53397814. 0.016337940 0.041187409 -5.9042961 32.772832 6727.8314 51625592. -0.031959263 0.039852685 -5.9673403 32.640908 6730.0407 50601987. 0.0045010159 0.040434753 -6.0317417 32.507153 6732.2500 51135518. 0.087111284 0.043786240 -6.0961338 32.377733