# # 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 = 50.922911 km # Date (UTC) = 2014-12-16T10:04:21.444 # Date (julian) = 2457007.91969264 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.8476 7.4959459e+10 0.039686373 0.031031078 -30.835499 50.821002 6498.2892 6.6819808e+10 0.047362688 0.031767336 -30.954737 50.718799 6500.7308 5.8888426e+10 0.054706786 0.032503594 -31.073961 50.616605 6503.1724 5.2257505e+10 0.061764535 0.033239851 -31.193186 50.514412 6505.6140 4.6370966e+10 0.068680511 0.033976109 -31.312411 50.415876 6508.0556 4.2219995e+10 0.075783407 0.034712367 -31.431636 50.317942 6510.4972 3.9826498e+10 0.083628180 0.035448624 -31.548688 50.217833 6512.9388 3.7816897e+10 0.092319261 0.036184882 -31.663655 50.115639 6515.3804 3.6037806e+10 0.10200136 0.036921140 -31.777935 50.013444 6517.8220 3.3554729e+10 0.11235721 0.037657397 -31.888659 49.911238 6520.2636 3.1334380e+10 0.12386901 0.038393655 -31.999383 49.809032 6522.7052 2.9005722e+10 0.13435924 0.039101925 -32.113560 49.706836 6525.1468 2.6510720e+10 0.14113605 0.039765457 -32.228527 49.604643 6527.5884 2.4173502e+10 0.14671168 0.041143680 -32.341513 49.502450 6530.0300 2.1964639e+10 0.15268129 0.043870741 -32.452221 49.400258 6532.4716 2.0420425e+10 0.15820349 0.047078190 -32.562930 49.298066 6534.9132 1.9056647e+10 0.16290487 0.048200023 -32.673639 49.195872 6537.3548 1.7717783e+10 0.16633179 0.048852512 -32.784349 49.093679 6539.7964 1.6524041e+10 0.16917719 0.050607683 -32.891798 48.991476 6542.2380 1.5316643e+10 0.16890237 0.051092606 -32.998263 48.889270 6544.6796 1.4132220e+10 0.16783698 0.052195673 -33.106511 48.787069 6547.1212 1.2956210e+10 0.16584262 0.053333464 -33.217219 48.684876 6549.5628 1.1797380e+10 0.16381171 0.054539842 -33.327622 48.582682 6552.0044 1.0816518e+10 0.16239656 0.055585653 -33.434074 48.480488 6554.4460 1.0038337e+10 0.16032921 0.054841740 -33.540525 48.378295 6556.8876 9.3144649e+09 0.15858928 0.053882629 -33.643897 48.276102 6559.3292 8.6614114e+09 0.15626831 0.052350022 -33.746091 48.173910 6561.7708 8.0134489e+09 0.15404631 0.050992839 -33.848289 48.071713 6564.2124 7.4369178e+09 0.15161891 0.048675330 -33.950494 47.969505 6566.6540 6.8960626e+09 0.15013913 0.046812909 -34.052700 47.867298 6569.0956 6.3989243e+09 0.14869578 0.044858648 -34.154893 47.765106 6571.5372 5.9567657e+09 0.14777996 0.044356551 -34.257087 47.662915 6573.9788 5.5458130e+09 0.14584251 0.042872007 -34.359280 47.560721 6576.4204 5.1747512e+09 0.14402733 0.040887490 -34.461472 47.458528 6578.8620 4.8019081e+09 0.14149056 0.037288398 -34.567873 47.352126 6581.3036 4.4567692e+09 0.13930167 0.035504672 -34.682843 47.237158 6583.7452 4.1406754e+09 0.13719156 0.034644475 -34.793695 47.124247 6586.1868 3.8578755e+09 0.13480544 0.033168881 -34.891643 47.017782 6588.6284 3.6197193e+09 0.13251904 0.033170072 -34.989590 46.911316 6591.0700 3.3934839e+09 0.12909222 0.029122916 -35.087526 46.808669 6593.5116 3.1811371e+09 0.12599864 0.026626583 -35.185461 46.706475 6595.9532 2.9894703e+09 0.12249264 0.025722421 -35.281074 46.604282 6598.3948 2.8265823e+09 0.12030395 0.025218672 -35.374752 46.502088 6600.8364 2.6771889e+09 0.12013573 0.026709363 -35.469267 46.399894 6603.2780 2.5293014e+09 0.11935183 0.026498698 -35.567201 46.297703 6605.7196 2.3928360e+09 0.11896531 0.027268730 -35.665136 46.195511 6608.1612 2.2633840e+09 0.11688211 0.023728109 -35.759470 46.093306 6610.6028 2.1477266e+09 0.11366807 0.024578938 -35.853160 45.991099 6613.0444 2.0331905e+09 0.11234582 0.023589880 -35.946843 45.888899 6615.4860 1.9243388e+09 0.11096245 0.023266484 -36.040518 45.786707 6617.9276 1.8255265e+09 0.11006218 0.023746790 -36.133549 45.683869 6620.3692 1.7371728e+09 0.10920259 0.024886170 -36.222970 45.577418 6622.8108 1.6514606e+09 0.10758164 0.024542187 -36.312390 45.470967 6625.2524 1.5729157e+09 0.10580806 0.025698783 -36.405227 45.367935 6627.6940 1.4967759e+09 0.10355941 0.025584888 -36.498903 45.265742 6630.1356 1.4315440e+09 0.10174286 0.025928636 -36.590649 45.163543 6632.5772 1.3723187e+09 0.099480668 0.026101555 -36.680079 45.061337 6635.0188 1.3090412e+09 0.097465297 0.026402605 -36.770697 44.957774 6637.4604 1.2358946e+09 0.095489426 0.025935929 -36.871296 44.842805 6639.9020 1.1600667e+09 0.094728449 0.025305685 -36.971685 44.727995 6642.3436 1.0892830e+09 0.094322665 0.025165756 -37.061103 44.621544 6644.7852 1.0339358e+09 0.092626627 0.025428467 -37.150522 44.515093 6647.2268 9.9049913e+08 0.090700669 0.026557182 -37.237087 44.411497 6649.6684 9.4624394e+08 0.089256653 0.026712357 -37.322248 44.309305 6652.1100 9.0564862e+08 0.088536570 0.027280781 -37.407413 44.207108 6654.5516 8.6517563e+08 0.087639165 0.027801248 -37.492585 44.104901 6656.9932 8.2667293e+08 0.085662410 0.028895124 -37.577757 44.002694 6659.4348 7.8775939e+08 0.084129240 0.031743904 -37.673283 43.888060 6661.8764 7.4402735e+08 0.082712596 0.032981307 -37.769089 43.773091 6664.3180 7.0396454e+08 0.081533241 0.031042631 -37.855462 43.665669 6666.7596 6.6762444e+08 0.081457347 0.027056608 -37.940624 43.559218 6669.2012 6.3720154e+08 0.080223322 0.028149084 -38.025785 43.455057 6671.6428 6.1288208e+08 0.080131641 0.026874508 -38.110946 43.352865 6674.0844 5.8627532e+08 0.079166472 0.029025963 -38.197214 43.248256 6676.5260 5.5781360e+08 0.076612995 0.032052708 -38.288231 43.133287 6678.9676 5.2703362e+08 0.075603871 0.030289463 -38.378219 43.019615 6681.4092 5.0024176e+08 0.076649710 0.029971265 -38.459123 42.917423 6683.8508 4.7328883e+08 0.076946478 0.032435389 -38.540027 42.815231 6686.2924 4.5326110e+08 0.075925202 0.033931187 -38.620938 42.709821 6688.7340 4.3430244e+08 0.072644602 0.033954614 -38.701851 42.603355 6691.1756 4.1601160e+08 0.071139451 0.032959841 -38.786855 42.493446 6693.6172 3.9568041e+08 0.069910286 0.031392364 -38.877871 42.378477 6696.0588 3.7383558e+08 0.069432949 0.029700200 -38.965678 42.267563 6698.5004 3.5440892e+08 0.068118312 0.030904619 -39.046582 42.165371 6700.9420 3.3855007e+08 0.065868010 0.031366396 -39.127485 42.063179 6703.3836 3.2732336e+08 0.065358379 0.034635020 -39.213547 41.948607 6705.8252 3.1078243e+08 0.065379153 0.038135569 -39.299773 41.833637 6708.2668 2.9776821e+08 0.064955279 0.040334066 -39.377555 41.726175 6710.7084 2.8517068e+08 0.063354560 0.040635147 -39.454200 41.619724 6713.1500 2.7157679e+08 0.061095582 0.044228977 -39.535957 41.508725 6715.5916 2.6227365e+08 0.058827763 0.047983612 -39.622195 41.393740 6718.0332 2.4852129e+08 0.056480391 0.049864046 -39.704157 41.284456 6720.4748 2.3662055e+08 0.055482846 0.050364758 -39.780802 41.182263 6722.9164 2.2727573e+08 0.054600988 0.049472357 -39.858378 41.078827 6725.3579 2.1427860e+08 0.050022143 0.041352426 -39.944605 40.963858 6727.7995 2.0298715e+08 0.048648760 0.039895159 -40.030698 40.848971 6730.2411 1.9172052e+08 0.047033003 0.040709544 -40.103085 40.742520 6732.6827 1.8156935e+08 0.045202703 0.043865900 -40.175473 40.636069 6735.1243 1.7506625e+08 0.044974343 0.049425434 -40.257010 40.523987 6737.5659 1.6793449e+08 0.046400516 0.055938393 -40.343238 40.409018 6740.0075 1.5779015e+08 0.046114241 0.064063247 -40.426716 40.294049 6742.4491 1.5103711e+08 0.042782995 0.069705169 -40.508151 40.179079 6744.8907 1.4473921e+08 0.038172428 0.078482377 -40.589594 40.064102 6747.3323 1.3721797e+08 0.033151839 0.067246749 -40.671043 39.949117 6749.7739 1.3179249e+08 0.030865214 0.072066028 -40.748877 39.837537 6752.2155 1.2368592e+08 0.027059706 0.073885059 -40.821263 39.731086 6754.6571 1.1895619e+08 0.025098668 0.075156713 -40.893863 39.624206 6757.0987 1.1628688e+08 0.021901534 0.076440420 -40.970509 39.509235 6759.5403 1.1225250e+08 0.022699935 0.075950346 -41.047156 39.394265 6761.9819 1.0726503e+08 0.026066249 0.078049352 -41.128415 39.279297 6764.4235 98527284. 0.029001323 0.079503576 -41.209852 39.164329 6766.8651 91022463. 0.029122929 0.081670690 -41.287095 39.049360 6769.3067 85851997. 0.023542544 0.085198217 -41.363741 38.934390 6771.7483 84167036. 0.018962420 0.091120168 -41.444160 38.819421 6774.1899 83463302. 0.014449625 0.097042118 -41.525596 38.704451 6776.6315 81994759. 0.0098565962 0.10296407 -41.603677 38.586127 6779.0731 75839152. 0.0047955617 0.10888602 -41.680323 38.466367 6781.5147 74318284. 2.3362728e-05 0.11480797 -41.756969 38.349544 6783.9563 70781153. -0.0051531491 0.12072992 -41.833615 38.234576 6786.3979 65864821. -0.010906656 0.12665187 -41.907751 38.119598 6788.8395 64273623. -0.016821653 0.13257382 -41.979617 38.004611 6791.2811 57826205. -0.025138007 0.13849578 -42.053578 37.889633 6793.7227 56007936. -0.036454084 0.14441773 -42.130224 37.774665 6796.1643 54667277. -0.081799082 0.15033968 -42.205191 37.659696 6798.6059 51136408. -0.053237075 0.15626163 -42.277047 37.544727 6801.0475 49443015. 0.022829479 0.16218358 -42.350163 37.429758