# # 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 = 54.352057 km # Date (UTC) = 2014-01-02T10:38:38.675 # Date (julian) = 2456659.94350318 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6492.4275 5.6994074e+10 0.027571465 0.029999728 94.909878 34.726213 6494.8675 5.2118075e+10 0.035065742 0.030735519 94.981689 34.596955 6497.3076 4.7060344e+10 0.042262730 0.031471310 95.055071 34.466124 6499.7476 4.2325209e+10 0.049161394 0.032207101 95.131681 34.332059 6502.1877 3.8349070e+10 0.055902554 0.032942892 95.205240 34.202571 6504.6277 3.5134738e+10 0.062759669 0.033678682 95.269067 34.087676 6507.0678 3.2442426e+10 0.070048086 0.034414473 95.332895 33.972782 6509.5078 2.9946622e+10 0.077927222 0.035150264 95.403818 33.845122 6511.9479 2.7514028e+10 0.086579578 0.035886055 95.475628 33.715864 6514.3879 2.5234750e+10 0.096198751 0.036621846 95.541056 33.598095 6516.8280 2.3335748e+10 0.10715810 0.037357637 95.604887 33.483201 6519.2680 2.1564768e+10 0.11943741 0.038093427 95.672308 33.361845 6521.7081 1.9800250e+10 0.13290507 0.038829218 95.744118 33.232588 6524.1481 1.8140268e+10 0.14154792 0.039479578 95.813051 33.108512 6526.5882 1.6688026e+10 0.14985049 0.040284708 95.876890 32.993603 6529.0282 1.5419426e+10 0.15752594 0.042280728 95.940824 32.878522 6531.4683 1.4164267e+10 0.16518448 0.045910245 96.012627 32.749271 6533.9083 1.2952635e+10 0.17109184 0.047905594 96.084434 32.620013 6536.3484 1.1839491e+10 0.17373885 0.048102194 96.144959 32.504006 6538.7884 1.0950297e+10 0.17523929 0.049540599 96.204537 32.389112 6541.2285 1.0184719e+10 0.17401631 0.051252438 96.271116 32.265993 6543.6685 9.4143659e+09 0.17146635 0.051557349 96.342924 32.136735 6546.1086 8.6920495e+09 0.16881900 0.052553861 96.408814 32.014425 6548.5486 8.0489805e+09 0.16710410 0.053831483 96.468388 31.899530 6550.9887 7.5114566e+09 0.16503152 0.055232914 96.528959 31.782716 6553.4287 6.9887156e+09 0.16345257 0.055119554 96.595985 31.653458 6555.8688 6.4714209e+09 0.16111702 0.054123388 96.662677 31.524844 6558.3088 5.9994882e+09 0.15918583 0.052976149 96.722260 31.409935 6560.7489 5.6051388e+09 0.15638170 0.051599103 96.781842 31.295025 6563.1889 5.2612046e+09 0.15392085 0.049709825 96.846597 31.170140 6565.6290 4.9200452e+09 0.15152617 0.047604188 96.913619 31.040882 6568.0690 4.6009220e+09 0.14991978 0.045708211 96.976126 30.920333 6570.5091 4.3320354e+09 0.14834737 0.044706632 97.035700 30.805439 6572.9491 4.1069190e+09 0.14645334 0.043686615 97.097184 30.686863 6575.3892 3.8624690e+09 0.14410223 0.041984240 97.164206 30.557605 6577.8292 3.6281804e+09 0.14146768 0.038917856 97.229981 30.431467 6580.2693 3.4127082e+09 0.13863037 0.036271901 97.289556 30.320828 6582.7093 3.2274620e+09 0.13598933 0.035100766 97.349130 30.210189 6585.1494 3.0662481e+09 0.13324406 0.033851347 97.410879 30.084328 6587.5894 2.8906009e+09 0.13047654 0.033288965 97.473113 29.955070 6590.0295 2.7255518e+09 0.12765158 0.031007228 97.530315 29.836267 6592.4695 2.5891010e+09 0.12455054 0.027617467 97.585644 29.721358 6594.9096 2.4606178e+09 0.12200913 0.025673206 97.645405 29.601010 6597.3496 2.3293635e+09 0.11965326 0.025612396 97.712427 29.471752 6599.7897 2.2015579e+09 0.11883790 0.024977226 97.776053 29.346662 6602.2297 2.0833114e+09 0.11867055 0.027320587 97.831372 29.231768 6604.6698 1.9835221e+09 0.11778374 0.026468973 97.886690 29.116874 6607.1098 1.8860847e+09 0.11686749 0.025490110 97.948510 28.992977 6609.5499 1.7819012e+09 0.11388651 0.023869274 98.010744 28.868506 6611.9899 1.6893667e+09 0.11144640 0.024327168 98.067093 28.752188 6614.4300 1.6065242e+09 0.11055230 0.023644247 98.122415 28.637293 6616.8700 1.5318752e+09 0.10916766 0.023418852 98.181207 28.515188 6619.3101 1.4506798e+09 0.10860494 0.024600734 98.243450 28.385910 6621.7501 1.3670121e+09 0.10769541 0.024840809 98.302836 28.264327 6624.1902 1.2972312e+09 0.10576082 0.024964118 98.358157 28.153688 6626.6302 1.2412308e+09 0.10394550 0.025787917 98.413612 28.041879 6629.0703 1.1838947e+09 0.10236235 0.026096396 98.471058 27.912622 6631.5103 1.1230432e+09 0.10039787 0.025982606 98.528504 27.783365 6633.9504 1.0654279e+09 0.098589181 0.026318182 98.583880 27.672242 6636.3904 1.0178157e+09 0.096695701 0.026398127 98.639202 27.561603 6638.8305 9.7769452e+08 0.095074387 0.025635460 98.695849 27.439346 6641.2705 9.2992206e+08 0.095267797 0.025149219 98.753295 27.310087 6643.7106 8.7904497e+08 0.094165786 0.025299910 98.813305 27.183390 6646.1506 8.2837116e+08 0.092929750 0.025998127 98.875543 27.058919 6648.5907 7.8187137e+08 0.091806939 0.027359699 98.932796 26.938716 6651.0307 7.4558303e+08 0.091402812 0.026507729 98.983864 26.823806 6653.4708 7.1265931e+08 0.091028458 0.027766034 99.035549 26.707973 6655.9108 6.8062259e+08 0.089340455 0.027986581 99.092999 26.583503 6658.3509 6.5145125e+08 0.087727261 0.030683407 99.150448 26.458985 6660.7910 6.1364455e+08 0.086301528 0.032344934 99.207894 26.329737 6663.2310 5.8278177e+08 0.084990793 0.032419197 99.265339 26.200480 6665.6711 5.5557595e+08 0.084570410 0.027447588 99.316922 26.088331 6668.1111 5.2906286e+08 0.083806083 0.027569093 99.367987 25.977692 6670.5512 5.1210218e+08 0.083159078 0.027073292 99.422685 25.856460 6672.9912 4.8823984e+08 0.082745433 0.027454119 99.480134 25.727202 6675.4313 4.6541043e+08 0.080695966 0.030624368 99.537582 25.600242 6677.8713 4.3910434e+08 0.079074704 0.031119566 99.595027 25.475771 6680.3114 4.1612369e+08 0.079279159 0.029508651 99.649979 25.356707 6682.7514 4.0412690e+08 0.079790300 0.030998646 99.701051 25.246053 6685.1915 3.9117492e+08 0.079369855 0.032907064 99.752388 25.134626 6687.6315 3.7422039e+08 0.076981012 0.033990702 99.809838 25.005368 6690.0716 3.5124566e+08 0.074629808 0.033107663 99.867287 24.876110 6692.5116 3.3145908e+08 0.073410493 0.032171228 99.920175 24.751413 6694.9517 3.2048667e+08 0.072439070 0.029927225 99.972836 24.626943 6697.3917 3.1517658e+08 0.071417137 0.030140837 100.02963 24.502472 6699.8318 3.0777606e+08 0.069568012 0.030822955 100.08708 24.378001 6702.2718 2.9600929e+08 0.067838781 0.033093773 100.14452 24.253531 6704.7119 2.7969136e+08 0.068290084 0.036527115 100.20197 24.129060 6707.1519 2.6881191e+08 0.067945811 0.040165065 100.25212 24.011160 6709.5920 2.5564791e+08 0.067083275 0.040756025 100.29893 23.896265 6712.0320 2.4808607e+08 0.064697078 0.041889399 100.34771 23.778151 6714.4721 2.4138265e+08 0.062277891 0.047338898 100.40037 23.653680 6716.9121 2.2941795e+08 0.060045325 0.049744823 100.45303 23.529205 6719.3522 2.2423134e+08 0.057609709 0.051035255 100.50570 23.404716 6721.7922 2.1414515e+08 0.057741499 0.050542598 100.55913 23.280230 6724.2323 2.0637086e+08 0.054892943 0.047987074 100.61657 23.155760 6726.6723 1.9646506e+08 0.051151981 0.040957431 100.67368 23.031290 6729.1124 1.8472021e+08 0.050416476 0.040970530 100.72634 22.906819 6731.5524 1.7651675e+08 0.048135237 0.042849443 100.77901 22.782349 6733.9925 1.7080473e+08 0.046536458 0.049312721 100.83167 22.657877 6736.4325 1.6492345e+08 0.048182007 0.051990178 100.88433 22.533406 6738.8726 1.5883196e+08 0.048917059 0.062125002 100.93699 22.408935 6741.3126 1.5139848e+08 0.047166355 0.066650309 100.98965 22.284464 6743.7527 1.4484310e+08 0.042045160 0.076124953 101.04231 22.159994 6746.1927 1.3864955e+08 0.039361855 0.076746646 101.09497 22.035523 6748.6328 1.3239573e+08 0.035755818 0.070345948 101.14763 21.911052 6751.0728 1.2772446e+08 0.032415398 0.073742462 101.20029 21.786582 6753.5129 1.2257156e+08 0.029269798 0.074637050 101.24996 21.662111 6755.9529 1.1703011e+08 0.026463586 0.074187548 101.29783 21.537639 6758.3930 1.0945590e+08 0.025749838 0.074536325 101.35231 21.403619 6760.8330 1.0162758e+08 0.026040483 0.077649817 101.41250 21.261364 6763.2731 97282572. 0.031418466 0.077269431 101.46735 21.131722 6765.7131 92707601. 0.033656007 0.079661377 101.52001 21.007251 6768.1532 88527871. 0.030510351 0.081407203 101.56970 20.882770 6770.5932 84139674. 0.025311008 0.088318545 101.61758 20.758281 6773.0333 77893370. 0.020607879 0.094236741 101.66801 20.636348 6775.4733 77570182. 0.016077779 0.10015494 101.72067 20.516665 6777.9134 73908409. 0.011347349 0.10607313 101.77424 20.386983 6780.3534 69755483. 0.0064577144 0.11199133 101.82895 20.244728 6782.7935 65878194. 0.0013407138 0.11790952 101.88240 20.113414 6785.2335 61541831. -0.0042642112 0.12382772 101.93506 19.988943 6787.6736 59820162. -0.010376337 0.12974591 101.98520 19.864472 6790.1136 56839861. -0.019542359 0.13566411 102.03307 19.740001 6792.5537 53422971. -0.051587113 0.14158231 102.08394 19.610142 6794.9937 50716547. -0.034418677 0.14750050 102.13866 19.473359 6797.4338 49528501. 0.012479374 0.15341870 102.19212 19.344085