# # 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 = 48.243352 km # Date (UTC) = 2015-01-04T10:17:59.026 # Date (julian) = 2457026.92915539 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6492.3068 8.9947934e+10 0.023715648 0.029963351 -34.122414 49.821099 6494.4688 8.3453932e+10 0.030064189 0.030615302 -34.233062 49.718712 6496.6309 7.5871368e+10 0.036244371 0.031267252 -34.331095 49.628221 6498.7929 6.9914274e+10 0.042350680 0.031919203 -34.429128 49.537729 6500.9549 6.5074256e+10 0.048622627 0.032571154 -34.534306 49.438168 6503.1169 6.0374528e+10 0.055165437 0.033223105 -34.644593 49.332122 6505.2789 5.5045370e+10 0.061943909 0.033875056 -34.754880 49.226076 6507.4409 4.9884781e+10 0.069147474 0.034527007 -34.865169 49.120030 6509.6030 4.5413400e+10 0.077041682 0.035178958 -34.975458 49.013984 6511.7650 4.1998775e+10 0.086048609 0.035830909 -35.071844 48.918158 6513.9270 3.9311604e+10 0.096280295 0.036482860 -35.166118 48.823884 6516.0890 3.6835830e+10 0.10758665 0.037134811 -35.262938 48.727981 6518.2510 3.3658297e+10 0.11932609 0.037786761 -35.368985 48.626176 6520.4131 3.0353831e+10 0.13170888 0.038438712 -35.475031 48.524371 6522.5751 2.7821947e+10 0.14372847 0.039067841 -35.570956 48.429044 6524.7371 2.5882780e+10 0.15272174 0.039688816 -35.665217 48.334783 6526.8991 2.4614872e+10 0.16089254 0.040610700 -35.758700 48.240521 6529.0611 2.3194966e+10 0.16735060 0.042333159 -35.849190 48.146259 6531.2231 2.1676891e+10 0.17284689 0.045553474 -35.939680 48.051998 6533.3852 2.0227915e+10 0.17669906 0.047683271 -36.036444 47.951203 6535.5472 1.8679715e+10 0.17667676 0.047986930 -36.138249 47.845157 6537.7092 1.7278186e+10 0.17619490 0.049019583 -36.237827 47.741429 6539.8712 1.6086010e+10 0.17522803 0.050698219 -36.328330 47.647155 6542.0332 1.5079013e+10 0.17263351 0.051014858 -36.418832 47.552881 6544.1953 1.4073536e+10 0.17037115 0.051802745 -36.515496 47.452190 6546.3573 1.2770363e+10 0.16832738 0.052758507 -36.617301 47.346144 6548.5193 1.1444314e+10 0.16676362 0.053822725 -36.716275 47.242309 6550.6813 1.0447131e+10 0.16528311 0.055155954 -36.802995 47.148048 6552.8433 9.6185214e+09 0.16405588 0.055374501 -36.889716 47.053786 6555.0053 9.1346535e+09 0.16244213 0.054848870 -36.982242 46.953214 6557.1674 8.3716108e+09 0.16045535 0.053761200 -37.079804 46.847168 6559.3294 7.6491119e+09 0.15816340 0.052350003 -37.174765 46.743220 6561.4914 7.2105101e+09 0.15567940 0.051130527 -37.257716 46.648958 6563.6534 6.8562170e+09 0.15305148 0.049172507 -37.340667 46.554696 6565.8154 6.6271435e+09 0.15062257 0.047392452 -37.431300 46.454239 6567.9775 6.1741203e+09 0.14911043 0.045790720 -37.528862 46.348193 6570.1395 5.6950622e+09 0.14764353 0.044859732 -37.623966 46.244128 6572.3015 5.2800601e+09 0.14572598 0.044057496 -37.706928 46.149854 6574.4635 4.9806511e+09 0.14305437 0.042632380 -37.789889 46.055580 6576.6255 4.7201517e+09 0.14024477 0.040651392 -37.878201 45.955226 6578.7876 4.4323844e+09 0.13698854 0.037405979 -37.971520 45.849180 6580.9496 4.1522876e+09 0.13429147 0.035643214 -38.062591 45.745008 6583.1116 3.8923137e+09 0.13248452 0.034965185 -38.141770 45.650746 6585.2736 3.6802566e+09 0.13063313 0.033752031 -38.220950 45.556485 6587.4356 3.5188824e+09 0.12897247 0.033254887 -38.307297 45.456251 6589.5976 3.3296487e+09 0.12720060 0.031860307 -38.400618 45.350204 6591.7597 3.1477061e+09 0.12497026 0.028344720 -38.491827 45.245919 6593.9217 2.9764227e+09 0.12281809 0.026245338 -38.571006 45.151657 6596.0837 2.8421436e+09 0.12010488 0.025726893 -38.650185 45.057396 6598.2457 2.7242286e+09 0.11819293 0.025289851 -38.734293 44.957267 6600.4077 2.5764484e+09 0.11765555 0.025828103 -38.823387 44.851205 6602.5698 2.4191336e+09 0.11693133 0.027030429 -38.911092 44.746796 6604.7318 2.2817453e+09 0.11586278 0.026505778 -38.990271 44.652534 6606.8938 2.1631369e+09 0.11467452 0.025897851 -39.069450 44.558273 6609.0558 2.0547774e+09 0.11143098 0.023722509 -39.151390 44.458262 6611.2178 1.9355558e+09 0.10846336 0.024819547 -39.236227 44.352216 6613.3798 1.8251456e+09 0.10726971 0.023712956 -39.319835 44.247707 6615.5419 1.7386171e+09 0.10550464 0.023268203 -39.395243 44.153445 6617.7039 1.6587090e+09 0.10417894 0.023672619 -39.470651 44.059184 6619.8659 1.5872789e+09 0.10302052 0.024734842 -39.550568 43.959287 6622.0279 1.5049720e+09 0.10137057 0.024750561 -39.635405 43.853240 6624.1899 1.4262609e+09 0.099020921 0.024963982 -39.719105 43.748616 6626.3520 1.3528750e+09 0.097225331 0.026142480 -39.794525 43.654342 6628.5140 1.2889344e+09 0.095474435 0.025911773 -39.869944 43.560068 6630.6760 1.2356793e+09 0.093829053 0.025929968 -39.949780 43.460274 6632.8380 1.2065062e+09 0.092388310 0.026132829 -40.034617 43.354228 6635.0000 1.1023060e+09 0.091503144 0.026399792 -40.117983 43.249495 6637.1620 1.0139369e+09 0.090469238 0.026082046 -40.189621 43.155234 6639.3241 9.5376403e+08 0.089935627 0.025512247 -40.261259 43.060972 6641.4861 9.0892764e+08 0.090542243 0.025149951 -40.337011 42.961299 6643.6481 9.1483653e+08 0.089411037 0.025290474 -40.417608 42.855252 6645.8101 8.6668683e+08 0.088477693 0.025831196 -40.497292 42.750405 6647.9721 8.2174336e+08 0.087529841 0.026949615 -40.568931 42.656144 6650.1342 7.9250346e+08 0.086643955 0.026285949 -40.640569 42.561882 6652.2962 7.6246591e+08 0.085962591 0.027332011 -40.716233 42.462323 6654.4582 7.3039400e+08 0.084942898 0.027841031 -40.796828 42.356277 6656.6202 6.9443427e+08 0.082970707 0.028567774 -40.877031 42.250231 6658.7822 6.5272685e+08 0.081363348 0.031448380 -40.953385 42.144185 6660.9442 6.1997403e+08 0.079870068 0.032484274 -41.029738 42.038139 6663.1063 5.9098154e+08 0.078484119 0.032453763 -41.102635 41.940741 6665.2683 5.6523861e+08 0.077715317 0.028107535 -41.174285 41.846467 6667.4303 5.4122965e+08 0.076930836 0.027261516 -41.246324 41.751217 6669.5923 5.1359868e+08 0.075816134 0.027747346 -41.322675 41.645171 6671.7543 4.8742865e+08 0.075445881 0.026876098 -41.399027 41.539126 6673.9164 4.6323452e+08 0.074471086 0.028829700 -41.475380 41.433080 6676.0784 4.3420747e+08 0.072155378 0.031764238 -41.551733 41.327034 6678.2404 4.0700260e+08 0.071245203 0.030775827 -41.623578 41.225323 6680.4024 3.8422819e+08 0.071800481 0.029528314 -41.687677 41.131062 6682.5644 3.7313060e+08 0.072500689 0.030855791 -41.751775 41.036800 6684.7265 3.6203930e+08 0.072503097 0.032690956 -41.824644 40.934104 6686.8885 3.4760354e+08 0.071069469 0.034278009 -41.900998 40.828058 6689.0505 3.3026058e+08 0.068323760 0.033970578 -41.975831 40.722012 6691.2125 3.1092776e+08 0.067546255 0.032951125 -42.047942 40.615966 6693.3745 2.9764717e+08 0.066706840 0.031475604 -42.120030 40.509981 6695.5365 2.8253995e+08 0.066381813 0.029760917 -42.187927 40.415655 6697.6986 2.7228537e+08 0.065691478 0.030179669 -42.255804 40.321381 6699.8606 2.6406799e+08 0.064169155 0.030796364 -42.325159 40.222999 6702.0226 2.5322429e+08 0.062464093 0.032894774 -42.397271 40.116954 6704.1846 2.4301399e+08 0.062851605 0.036268209 -42.469383 40.010908 6706.3466 2.3034820e+08 0.062819195 0.039049694 -42.541493 39.904862 6708.5087 2.2093902e+08 0.062381987 0.040597483 -42.613604 39.798816 6710.6707 2.1349571e+08 0.060892090 0.040627770 -42.683026 39.692770 6712.8327 2.0667997e+08 0.058871416 0.043375984 -42.750895 39.586723 6714.9947 2.0086525e+08 0.056869297 0.047378191 -42.819938 39.480677 6717.1567 1.9297830e+08 0.054834841 0.049864574 -42.892050 39.374631 6719.3187 1.8374396e+08 0.052880380 0.051067009 -42.964162 39.268585 6721.4808 1.6920968e+08 0.053388127 0.050448755 -43.032375 39.162539 6723.6428 1.6092728e+08 0.051907549 0.049727434 -43.100244 39.056493 6725.8048 1.5607461e+08 0.048041812 0.041073300 -43.170495 38.950447 6727.9668 1.5303952e+08 0.047394656 0.039672308 -43.242606 38.844401 6730.1288 1.4875909e+08 0.046272510 0.040555552 -43.312313 38.740758 6732.2909 1.4267188e+08 0.044956629 0.043793754 -43.372649 38.646483 6734.4529 1.3739471e+08 0.044646285 0.049326351 -43.432984 38.552209 6736.6149 1.3063698e+08 0.046637813 0.052679637 -43.497480 38.451434 6738.7769 1.2354012e+08 0.047820095 0.061598334 -43.565350 38.345388 6740.9389 1.1519981e+08 0.047154729 0.065654359 -43.632393 38.239342 6743.1009 1.1133970e+08 0.043752141 0.071728419 -43.696021 38.133296 6745.2630 1.0830372e+08 0.040969808 0.078677434 -43.759649 38.027250 6747.4250 1.0542024e+08 0.036715827 0.067214856 -43.826829 37.921204 6749.5870 1.0091325e+08 0.035533203 0.072117212 -43.894698 37.815158 6751.7490 94854207. 0.032685278 0.074028360 -43.962567 37.709112 6753.9110 91589276. 0.031379145 0.075925573 -44.030437 37.603066 6756.0731 88833145. 0.029095393 0.074354893 -44.098900 37.495166 6758.2351 84959527. 0.028932450 0.074202419 -44.171619 37.373967 6760.3971 82663923. 0.029655830 0.076818509 -44.243797 37.253673 6762.5591 77209254. 0.034503315 0.077148953 -44.307424 37.147627 6764.7211 73740840. 0.037517794 0.079517833 -44.371050 37.041581 6766.8831 70205038. 0.038137830 0.081711444 -44.434678 36.935535 6769.0452 67102337. 0.033802017 0.084563808 -44.498306 36.829489 6771.2072 67490674. 0.030115431 0.089807653 -44.561934 36.723443 6773.3692 65016513. 0.026790527 0.095051499 -44.625560 36.617397 6775.5312 58636509. 0.024164975 0.10029534 -44.689187 36.511351 6777.6932 52829525. 0.022313171 0.10553919 -44.752824 36.405290 6779.8553 50632550. 0.021120602 0.11078303 -44.816462 36.299228 6782.0173 48941215. 0.032840087 0.11602688 -44.880094 36.195849 6784.1793 51214989. 0.014722660 0.12127072 -44.943723 36.094046 6786.3413 49475135. -0.015681023 0.12651457 -45.008508 35.986954