# # 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 = 57.656970 km # Date (UTC) = 2015-01-26T10:00:08.058 # Date (julian) = 2457048.91675993 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6484.9599 9.5397572e+10 0.024350298 0.027747906 100.93639 49.099141 6487.4141 8.3882905e+10 0.032014414 0.028487961 101.09324 48.899509 6489.8683 7.3163838e+10 0.039547508 0.029228016 101.23449 48.719738 6492.3225 6.5211672e+10 0.046478046 0.029968071 101.39404 48.507949 6494.7767 5.8800698e+10 0.052895127 0.030708126 101.53986 48.313516 6497.2309 5.2866882e+10 0.059032259 0.031448181 101.67563 48.132495 6499.6850 4.7691920e+10 0.064799322 0.032188236 101.83739 47.916813 6502.1392 4.3199702e+10 0.070157177 0.032928291 101.97931 47.727583 6504.5934 3.9146859e+10 0.074976235 0.033668346 102.11299 47.546662 6507.0476 3.6088276e+10 0.079258401 0.034408401 102.24140 47.360468 6509.5018 3.3010337e+10 0.083253674 0.035148456 102.38578 47.155913 6511.9560 3.0051227e+10 0.087478456 0.035888511 102.53155 46.951828 6514.4102 2.7408062e+10 0.092972277 0.036628565 102.65994 46.772093 6516.8644 2.5095673e+10 0.10084089 0.037368620 102.78834 46.592330 6519.3186 2.3360209e+10 0.11249461 0.038108675 102.91541 46.412558 6521.7728 2.1730642e+10 0.12809922 0.038848730 103.03740 46.232784 6524.2270 2.0002728e+10 0.14094215 0.039507589 103.17526 46.024597 6526.6812 1.8275487e+10 0.15506516 0.040382196 103.31304 45.816566 6529.1353 1.6556394e+10 0.16671523 0.042451377 103.43503 45.636793 6531.5895 1.5127971e+10 0.17513745 0.046086756 103.55700 45.457050 6534.0437 1.3928498e+10 0.17792736 0.047956789 103.67745 45.277305 6536.4979 1.2837068e+10 0.17651266 0.048236003 103.79302 45.097535 6538.9521 1.1838233e+10 0.17532732 0.049620309 103.91295 44.917761 6541.4063 1.0916537e+10 0.17344918 0.051194768 104.03415 44.737202 6543.8605 1.0080863e+10 0.17101662 0.051607734 104.14971 44.551012 6546.3147 9.3159592e+09 0.16888224 0.052723462 104.26166 44.368446 6548.7689 8.6121009e+09 0.16708374 0.053897259 104.37086 44.188673 6551.2231 7.9538622e+09 0.16547481 0.055314052 104.48642 44.008902 6553.6773 7.3424806e+09 0.16380037 0.054994617 104.59910 43.826242 6556.1315 6.7584399e+09 0.16166954 0.053993800 104.70825 43.640048 6558.5856 6.2280822e+09 0.15969536 0.052740264 104.81737 43.459618 6561.0398 5.7752562e+09 0.15684942 0.051353051 104.92651 43.279871 6563.4940 5.3854318e+09 0.15441596 0.049356892 105.03565 43.100099 6565.9482 5.0349567e+09 0.15188398 0.047241683 105.14480 42.920326 6568.4024 4.7015101e+09 0.15020206 0.045401752 105.25395 42.739145 6570.8566 4.3725049e+09 0.14840939 0.044562676 105.36310 42.552954 6573.3108 4.0729557e+09 0.14622691 0.043408078 105.46799 42.371011 6575.7650 3.7922755e+09 0.14343705 0.041607188 105.57072 42.191238 6578.2192 3.5269452e+09 0.14034079 0.038303510 105.67345 42.011466 6580.6734 3.3111169e+09 0.13672130 0.035898464 105.76814 41.845756 6583.1276 3.1335780e+09 0.13358849 0.034957102 105.85617 41.691697 6585.5818 2.9917360e+09 0.13040612 0.033505677 105.95492 41.514201 6588.0359 2.8448815e+09 0.12824784 0.033367928 106.05765 41.329111 6590.4901 2.6831178e+09 0.12588420 0.030150341 106.16038 41.149340 6592.9443 2.5354029e+09 0.12368602 0.027156298 106.25916 40.969567 6595.3985 2.3844932e+09 0.12122176 0.025664898 106.35583 40.789794 6597.8527 2.2436479e+09 0.11910218 0.025453645 106.45856 40.610023 6600.3069 2.1208149e+09 0.11853250 0.025620805 106.55121 40.443075 6602.7611 2.0145298e+09 0.11783229 0.026867148 106.63376 40.288990 6605.2153 1.9273637e+09 0.11696556 0.026845649 106.72569 40.113005 6607.6695 1.8289584e+09 0.11520151 0.024385034 106.82119 39.927616 6610.1237 1.7254068e+09 0.11203369 0.024121139 106.91106 39.747878 6612.5779 1.6390992e+09 0.10987842 0.023888998 106.99678 39.582678 6615.0320 1.5640023e+09 0.10857435 0.023252518 107.07932 39.428593 6617.4862 1.5007228e+09 0.10703245 0.023600461 107.17218 39.255255 6619.9404 1.4227830e+09 0.10625333 0.024752825 107.26726 39.075484 6622.3946 1.3387722e+09 0.10473911 0.024652957 107.35714 38.895712 6624.8488 1.2702947e+09 0.10282141 0.025316676 107.43888 38.728746 6627.3030 1.2138522e+09 0.10035835 0.025433857 107.51592 38.569157 6629.7572 1.1703188e+09 0.098585717 0.025972201 107.60346 38.393071 6632.2114 1.1136290e+09 0.096295594 0.026057693 107.69335 38.213298 6634.6656 1.0530269e+09 0.094315906 0.026375393 107.78323 38.033527 6637.1198 1.0028137e+09 0.092249516 0.026102750 107.86410 37.871794 6639.5740 9.5804672e+08 0.091298504 0.025422927 107.94114 37.717709 6642.0282 9.1903055e+08 0.091535917 0.025152848 108.02955 37.540887 6644.4823 8.7026148e+08 0.090662827 0.025395738 108.11733 37.361125 6646.9365 8.1729750e+08 0.089787267 0.026404931 108.20078 37.181390 6649.3907 7.7565451e+08 0.088865421 0.027095083 108.27930 37.021398 6651.8449 7.4023171e+08 0.088547659 0.027131677 108.35634 36.867313 6654.2991 7.1098937e+08 0.087783597 0.027908800 108.43950 36.688761 6656.7533 6.8159486e+08 0.085790551 0.028684590 108.51826 36.519136 6659.2075 6.5240602e+08 0.084095451 0.031791314 108.58980 36.365049 6661.6617 6.2405725e+08 0.082596070 0.032871962 108.66823 36.196120 6664.1159 5.9333518e+08 0.081155781 0.031782085 108.75170 36.016347 6666.5701 5.6443433e+08 0.081121257 0.027019681 108.83516 35.836576 6669.0243 5.3168733e+08 0.079847444 0.028330782 108.91056 35.668692 6671.4785 5.0823139e+08 0.079847623 0.026872167 108.97660 35.514605 6673.9326 4.8383268e+08 0.078985989 0.028854060 109.05389 35.343936 6676.3868 4.6417599e+08 0.076355315 0.031963039 109.13630 35.166427 6678.8410 4.5068512e+08 0.075098000 0.030374097 109.20784 35.012342 6681.2952 4.3386299e+08 0.075931404 0.029883848 109.28087 34.851308 6683.7494 4.1730043e+08 0.076135976 0.032286855 109.35790 34.671570 6686.2036 3.9565407e+08 0.075232401 0.033879545 109.43494 34.491808 6688.6578 3.7365423e+08 0.072015339 0.033937032 109.51027 34.316031 6691.1120 3.5705813e+08 0.070442098 0.032974841 109.57631 34.161946 6693.5662 3.4097469e+08 0.069290067 0.031409854 109.64607 33.999169 6696.0204 3.2614241e+08 0.068949429 0.029684249 109.72311 33.819395 6698.4746 3.1099487e+08 0.067948642 0.030869209 109.79156 33.659681 6700.9288 2.9793778e+08 0.066025759 0.031356601 109.85760 33.505596 6703.3829 2.8956511e+08 0.065747054 0.034633488 109.93425 33.326758 6705.8371 2.7410002e+08 0.065928902 0.038156868 110.01129 33.146986 6708.2913 2.5888659e+08 0.065620691 0.040360825 110.08834 32.967213 6710.7455 2.4478197e+08 0.064090656 0.040642421 110.15604 32.809238 6713.1997 2.3368151e+08 0.061867465 0.044408941 110.22222 32.654344 6715.6539 2.2842413e+08 0.059660190 0.048047382 110.29285 32.474573 6718.1081 2.2171033e+08 0.057296364 0.049980764 110.36130 32.309583 6720.5623 2.1348714e+08 0.056527465 0.050354616 110.42733 32.161000 6723.0165 2.0614019e+08 0.055698167 0.049378134 110.49637 31.991957 6725.4707 1.9615815e+08 0.051285735 0.041282015 110.56698 31.812217 6727.9249 1.8461418e+08 0.050279249 0.039728205 110.63761 31.632445 6730.3791 1.7773638e+08 0.048760218 0.040898631 110.70277 31.466580 6732.8332 1.7030260e+08 0.047263837 0.043893607 110.76330 31.312495 6735.2874 1.6533797e+08 0.047512458 0.049598567 110.83115 31.144455 6737.7416 1.5962005e+08 0.049197950 0.056498040 110.90177 30.970032 6740.1958 1.4930328e+08 0.049085824 0.064384886 110.97240 30.790260 6742.6500 1.4190029e+08 0.045884364 0.070194626 111.03688 30.626136 6745.1042 1.3658223e+08 0.041967433 0.078610692 111.09741 30.472051 6747.5584 1.3188440e+08 0.037540573 0.067168927 111.16594 30.297622 6750.0126 1.2882929e+08 0.035056687 0.072025623 111.23656 30.119355 6752.4668 1.2337452e+08 0.032343305 0.073594328 111.30719 29.946003 6754.9210 1.1644776e+08 0.030765373 0.074732438 111.36725 29.785711 6757.3752 1.1405766e+08 0.028402216 0.075601544 111.42227 29.631652 6759.8294 1.0916699e+08 0.029502009 0.076020091 111.49070 29.455493 6762.2835 1.0376626e+08 0.033718604 0.077593466 111.55939 29.277659 6764.7377 96938265. 0.037043449 0.079518628 111.62359 29.104308 6767.1919 90548682. 0.036962604 0.081760857 111.68096 28.945298 6769.6461 87194634. 0.031711855 0.086021382 111.73599 28.791213 6772.1003 87036554. 0.027267769 0.091973875 111.80548 28.619264 6774.5545 86138208. 0.022844135 0.097926369 111.87373 28.443538 6777.0087 83465602. 0.018458702 0.10387886 111.93794 28.263766 6779.4629 82224654. 0.014041039 0.10983136 112.00214 28.089209 6781.9171 82159470. 0.0095950560 0.11578385 112.06402 27.920763 6784.3713 82051788. 0.0051565775 0.12173634 112.11905 27.766677 6786.8255 78889357. 0.00077458926 0.12768884 112.17808 27.604178 6789.2797 74002990. -0.0035753782 0.13364133 112.24227 27.430861 6791.7338 69455953. -0.0079263135 0.13959382 112.30648 27.251865 6794.1880 66504087. -0.012296655 0.14554632 112.37068 27.074162 6796.6422 60989766. -0.016606769 0.15149881 112.43488 26.900811 6799.0964 57564530. -0.020954297 0.15745130 112.49418 26.722551 6801.5506 53829908. -0.025275011 0.16340380 112.55329 26.544108 6804.0048 50912601. -0.029590167 0.16935629 112.61750 26.370755 6806.4590 51779967. -0.033990330 0.17530879 112.68170 26.197404 6808.9132 48993039. -0.038292601 0.18126128 112.74455 26.025826 6811.3674 52167637. -0.043306503 0.18721377 112.79408 25.871740 6813.8216 50582383. -0.050523253 0.19316627 112.84764 25.712368 6816.2758 46444753. -0.052779422 0.19911876 112.91183 25.539051 6818.7299 42195151. -0.051505896 0.20507125 112.97143 25.365710