# # 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 = 37.013121 km # Date (UTC) = 2016-12-30T08:55:28.426 # Date (julian) = 2457752.87185678 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.6571 5.8790055e+10 0.083370777 0.034592190 -14.524951 48.685050 6509.3663 5.3569454e+10 0.091681679 0.035107599 -14.599471 48.610530 6511.0755 4.9025236e+10 0.10019588 0.035623007 -14.673994 48.536967 6512.7847 4.5040555e+10 0.10892577 0.036138416 -14.748523 48.465418 6514.4940 4.1662821e+10 0.11791714 0.036653825 -14.823053 48.393869 6516.2032 3.8347950e+10 0.12701607 0.037169234 -14.897583 48.322320 6517.9124 3.5230219e+10 0.13623843 0.037684643 -14.972103 48.247896 6519.6216 3.2457072e+10 0.14563362 0.038200052 -15.046623 48.173377 6521.3308 3.0006968e+10 0.15520097 0.038715461 -15.121143 48.098857 6523.0400 2.7818834e+10 0.16202784 0.039189034 -15.193836 48.024337 6524.7492 2.5874114e+10 0.16749786 0.039693133 -15.265375 47.949817 6526.4585 2.4048008e+10 0.17090352 0.040148726 -15.336914 47.875298 6528.1677 2.2325123e+10 0.17479810 0.041575498 -15.409222 47.801547 6529.8769 2.0712732e+10 0.17837467 0.043632585 -15.483742 47.730008 6531.5861 1.9330993e+10 0.18019946 0.046081753 -15.558262 47.658470 6533.2953 1.8002767e+10 0.18184407 0.047645086 -15.632782 47.586931 6535.0045 1.6651425e+10 0.18259125 0.048222333 -15.712698 47.504275 6536.7137 1.5276606e+10 0.18139702 0.048429103 -15.793192 47.420427 6538.4230 1.3890257e+10 0.18056072 0.049362637 -15.873687 47.336578 6540.1322 1.2732863e+10 0.17982044 0.050916541 -15.943182 47.264073 6541.8414 1.1775492e+10 0.17722501 0.051053676 -16.011740 47.192533 6543.5506 1.0949203e+10 0.17506976 0.051526399 -16.080298 47.120994 6545.2598 1.0210914e+10 0.17352295 0.052457895 -16.150546 47.047765 6546.9690 9.5137723e+09 0.17167528 0.053261875 -16.222085 46.973246 6548.6782 8.8519421e+09 0.16938101 0.053870190 -16.293624 46.898726 6550.3874 8.2395147e+09 0.16799157 0.055082373 -16.364531 46.824206 6552.0967 7.6670356e+09 0.16636097 0.055562436 -16.433089 46.749686 6553.8059 7.1334045e+09 0.16389603 0.054929963 -16.501647 46.675166 6555.5151 6.6609173e+09 0.16192835 0.054420565 -16.570205 46.600646 6557.2243 6.2353060e+09 0.15983186 0.053725512 -16.636216 46.526118 6558.9335 5.8480458e+09 0.15685917 0.052443832 -16.701802 46.451589 6560.6427 5.4976902e+09 0.15413662 0.051694804 -16.767388 46.377059 6562.3519 5.1528090e+09 0.15147120 0.050545014 -16.834468 46.304033 6564.0612 4.8438658e+09 0.14808876 0.048743880 -16.903027 46.232493 6565.7704 4.5557552e+09 0.14543766 0.047443629 -16.971586 46.160953 6567.4796 4.2948401e+09 0.14311987 0.046211685 -17.039703 46.088973 6569.1888 4.0615265e+09 0.14022720 0.044864712 -17.105280 46.014453 6570.8980 3.8375182e+09 0.13769962 0.044545521 -17.170857 45.939934 6572.6072 3.6365338e+09 0.13498230 0.043882412 -17.236435 45.865414 6574.3164 3.4209100e+09 0.13159190 0.042703020 -17.308514 45.783505 6576.0257 3.1980008e+09 0.12842766 0.041341865 -17.382290 45.699668 6577.7349 2.9768165e+09 0.12574721 0.039066072 -17.456066 45.615832 6579.4441 2.7657416e+09 0.12303158 0.036826366 -17.523192 45.541971 6581.1533 2.5864630e+09 0.12082102 0.035550189 -17.588769 45.470433 6582.8625 2.4291671e+09 0.11928541 0.035059082 -17.654347 45.398895 6584.5717 2.2837549e+09 0.11738732 0.034204072 -17.719929 45.325991 6586.2809 2.1487522e+09 0.11540529 0.033167665 -17.785515 45.251462 6587.9902 2.0161670e+09 0.11405451 0.033377749 -17.851101 45.176932 6589.6994 1.8940292e+09 0.11209610 0.031658502 -17.916382 45.102403 6591.4086 1.7879245e+09 0.10966872 0.028740877 -17.978979 45.027883 6593.1178 1.6875352e+09 0.10765750 0.026992710 -18.041576 44.953364 6594.8270 1.5986376e+09 0.10534234 0.025718537 -18.104172 44.878844 6596.5362 1.4974236e+09 0.10279511 0.025724836 -18.166769 44.804324 6598.2454 1.4115198e+09 0.10091555 0.025289987 -18.229365 44.729804 6599.9546 1.3354614e+09 0.099969081 0.024987147 -18.291962 44.655284 6601.6639 1.2637465e+09 0.099064515 0.027358330 -18.357629 44.578425 6603.3731 1.1913109e+09 0.097566583 0.026442415 -18.428051 44.497942 6605.0823 1.1094805e+09 0.096779801 0.026734076 -18.498474 44.417458 6606.7915 1.0425036e+09 0.095379285 0.026081661 -18.564465 44.339418 6608.5007 9.8146673e+08 0.092693807 0.023719133 -18.624089 44.264888 6610.2099 9.3454233e+08 0.089910984 0.024203561 -18.683712 44.190359 6611.9191 8.8934077e+08 0.087520587 0.024372315 -18.743502 44.115830 6613.6284 8.4774542e+08 0.086316599 0.023804135 -18.806099 44.041310 6615.3376 8.1191713e+08 0.084933570 0.023261918 -18.868696 43.966790 6617.0468 7.7216038e+08 0.083875962 0.023454760 -18.931293 43.892270 6618.7560 7.3804278e+08 0.083470257 0.024341663 -18.991800 43.817750 6620.4652 7.0843443e+08 0.083152923 0.024917111 -19.051415 43.743230 6622.1744 6.8504425e+08 0.082275558 0.024711567 -19.111031 43.668710 6623.8836 6.5766832e+08 0.080901635 0.024819200 -19.173228 43.590964 6625.5929 6.2446339e+08 0.080363595 0.026105054 -19.240297 43.507128 6627.3021 5.8813502e+08 0.078960284 0.025433493 -19.307366 43.423292 6629.0113 5.5397980e+08 0.078363220 0.026107066 -19.370634 43.343936 6630.7205 5.3230000e+08 0.077245267 0.025930077 -19.427269 43.272398 6632.4297 5.1072898e+08 0.076277982 0.026083871 -19.483904 43.200860 6634.1389 4.8519728e+08 0.075285003 0.026336976 -19.540567 43.129293 6635.8481 4.6686430e+08 0.074279882 0.026526978 -19.600191 43.054763 6637.5573 4.4385004e+08 0.073629094 0.025888440 -19.659814 42.980234 6639.2666 4.2939838e+08 0.073073475 0.025532800 -19.719437 42.905704 6640.9758 4.1163223e+08 0.073788910 0.025151264 -19.781742 42.825077 6642.6850 3.8847944e+08 0.073764276 0.025179727 -19.845458 42.741241 6644.3942 3.6820395e+08 0.073110506 0.025386211 -19.909174 42.657404 6646.1034 3.4361351e+08 0.072570750 0.025973679 -19.968124 42.579839 6647.8126 3.2564311e+08 0.072069792 0.026865633 -20.024759 42.505319 6649.5218 3.0613685e+08 0.071543418 0.026914352 -20.081394 42.430800 6651.2311 2.9398041e+08 0.071398419 0.026661237 -20.138029 42.357229 6652.9403 2.8155649e+08 0.071456476 0.027509228 -20.194663 42.285689 6654.6495 2.7312796e+08 0.070868812 0.027759539 -20.251298 42.214150 6656.3587 2.6258341e+08 0.069772394 0.028338245 -20.307932 42.142610 6658.0679 2.4902718e+08 0.069197116 0.030181522 -20.371390 42.059223 6659.7771 2.3474170e+08 0.068529159 0.031672489 -20.435105 41.975387 6661.4863 2.1566209e+08 0.067959224 0.032782653 -20.498809 41.891562 6663.1956 2.0348327e+08 0.067494794 0.032429020 -20.552668 41.816849 6664.9048 1.9314774e+08 0.067427030 0.028895586 -20.606330 41.742319 6666.6140 1.8051302e+08 0.067592972 0.027028237 -20.659992 41.667789 6668.3232 1.7644139e+08 0.066943466 0.027756778 -20.715518 41.593265 6670.0324 1.7130791e+08 0.066737972 0.027313619 -20.772153 41.518746 6671.7416 1.6848867e+08 0.066477818 0.026875917 -20.828789 41.444226 6673.4508 1.6337026e+08 0.065972362 0.028133474 -20.886438 41.367169 6675.1600 1.4967412e+08 0.064736030 0.030104909 -20.946800 41.283333 6676.8693 1.3600675e+08 0.063042480 0.032273958 -21.007161 41.199497 6678.5785 1.2666797e+08 0.062419083 0.030549704 -21.065576 41.119231 6680.2877 1.2043024e+08 0.062678496 0.029503541 -21.119230 41.047693 6681.9969 1.1711391e+08 0.062785163 0.030422167 -21.172884 40.976155 6683.7061 1.1214721e+08 0.062529825 0.032223403 -21.226538 40.904616 6685.4153 1.0627512e+08 0.061719333 0.033143529 -21.283331 40.821573 6687.1245 1.0096398e+08 0.059534710 0.034273440 -21.340340 40.737737 6688.8338 96437798. 0.056554777 0.033977650 -21.397349 40.653900 6690.5430 96497550. 0.055090523 0.033053639 -21.451166 40.578938 6692.2522 93012348. 0.053612383 0.032472481 -21.504827 40.504408 6693.9614 91656161. 0.052183259 0.031274269 -21.558489 40.429878 6695.6706 85561704. 0.051324984 0.029736290 -21.614155 40.349773 6697.3798 79022028. 0.049787858 0.030139333 -21.671164 40.265937 6699.0890 74455916. 0.047707618 0.031508273 -21.728172 40.182101 6700.7983 73057793. 0.045563808 0.031259805 -21.783111 40.105853 6702.5075 79902290. 0.045129967 0.033281945 -21.836765 40.034314 6704.2167 76271634. 0.044370086 0.036283955 -21.890420 39.962775 6705.9259 73446345. 0.043308945 0.038314660 -21.944954 39.888010 6707.6351 68765157. 0.041300360 0.040095848 -22.001963 39.804173 6709.3443 64676122. 0.038201629 0.040913538 -22.058971 39.720336 6711.0535 68060616. 0.034955434 0.040753142 -22.115980 39.636500 6712.7627 64717665. 0.026230793 0.043246130 -22.172989 39.552664 6714.4720 62342807. -0.016600369 0.047338891 -22.229997 39.468828 6716.1812 57950305. 0.014833139 0.048668217 -22.284229 39.387768 6717.8904 51491694. 0.094936702 0.049819194 -22.331928 39.313238