# # 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 = 46.763844 km # Date (UTC) = 2015-01-20T09:48:41.828 # Date (julian) = 2457042.90881745 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.2750 8.7738142e+10 0.036110361 0.031159933 -23.621651 54.891958 6498.4871 7.8599784e+10 0.043097818 0.031827009 -23.795269 54.747275 6500.6993 6.9812849e+10 0.050024406 0.032494086 -23.954154 54.614257 6502.9115 6.2569555e+10 0.057022974 0.033161163 -24.107926 54.485288 6505.1237 5.6748507e+10 0.064295543 0.033828239 -24.258096 54.359921 6507.3359 5.1692294e+10 0.071958285 0.034495316 -24.406908 54.235911 6509.5480 4.7276266e+10 0.080180345 0.035162392 -24.552196 54.108376 6511.7602 4.3204754e+10 0.089050655 0.035829469 -24.696047 53.979405 6513.9724 3.9090142e+10 0.098465112 0.036496545 -24.856552 53.839523 6516.1846 3.5184509e+10 0.10852476 0.037163622 -25.024383 53.694841 6518.3967 3.1639578e+10 0.11931332 0.037830699 -25.169037 53.565345 6520.6089 2.8735445e+10 0.13107510 0.038497775 -25.312889 53.436376 6522.8211 2.6415206e+10 0.14160990 0.039132266 -25.452025 53.312121 6525.0333 2.4350113e+10 0.14962815 0.039778417 -25.590916 53.188111 6527.2455 2.2493887e+10 0.15609851 0.040894675 -25.729807 53.059464 6529.4576 2.0772696e+10 0.16195121 0.042964759 -25.868697 52.930493 6531.6698 1.9255056e+10 0.16769954 0.046203603 -26.003032 52.801523 6533.8820 1.7836140e+10 0.17181810 0.047894408 -26.136963 52.672553 6536.0942 1.6546890e+10 0.17327380 0.047874760 -26.270894 52.543584 6538.3064 1.5351092e+10 0.17508736 0.049305858 -26.404825 52.414615 6540.5185 1.4152097e+10 0.17452225 0.051099069 -26.538756 52.290043 6542.7307 1.3039326e+10 0.17224714 0.051279655 -26.672687 52.166032 6544.9429 1.2009871e+10 0.17055726 0.052409235 -26.802299 52.037703 6547.1551 1.1104728e+10 0.16845456 0.053346333 -26.931269 51.908731 6549.3672 1.0293421e+10 0.16639860 0.054340530 -27.060238 51.779762 6551.5794 9.5464208e+09 0.16489772 0.055439137 -27.189208 51.650792 6553.7916 8.8614497e+09 0.16293484 0.054937140 -27.318178 51.521821 6556.0038 8.2157375e+09 0.16082479 0.054012570 -27.447149 51.392849 6558.2160 7.6204939e+09 0.15919842 0.053055282 -27.572020 51.263898 6560.4281 7.0803347e+09 0.15675593 0.051888289 -27.696009 51.134951 6562.6403 6.5903348e+09 0.15427268 0.050270621 -27.820015 51.005984 6564.8525 6.1548655e+09 0.15188648 0.048385247 -27.944025 50.877012 6567.0647 5.7469213e+09 0.14972646 0.046562506 -28.064113 50.748042 6569.2769 5.3384870e+09 0.14767566 0.044870443 -28.183163 50.619073 6571.4890 4.9663095e+09 0.14599248 0.044369712 -28.302213 50.490104 6573.7012 4.6135813e+09 0.14355433 0.043094780 -28.421263 50.361134 6575.9134 4.2969203e+09 0.14091217 0.041458295 -28.540313 50.232163 6578.1256 4.0166651e+09 0.13797857 0.038451334 -28.659362 50.103192 6580.3377 3.7586564e+09 0.13471664 0.036208630 -28.778412 49.974222 6582.5499 3.5341052e+09 0.13152833 0.035144146 -28.897461 49.845252 6584.7621 3.3304351e+09 0.12838333 0.034100366 -29.012906 49.716281 6586.9743 3.1313984e+09 0.12558411 0.033158702 -29.126995 49.587310 6589.1865 2.9443305e+09 0.12320756 0.032676063 -29.241084 49.458340 6591.3986 2.7720710e+09 0.12076670 0.028752096 -29.355172 49.329370 6593.6108 2.6034468e+09 0.11867586 0.026534349 -29.469262 49.200400 6595.8230 2.4584478e+09 0.11600969 0.025708918 -29.583352 49.071428 6598.0352 2.2983398e+09 0.11419911 0.025390373 -29.694074 48.939091 6600.2473 2.1455069e+09 0.11364015 0.025498381 -29.803202 48.805159 6602.4595 2.0083413e+09 0.11300109 0.027124490 -29.912331 48.674517 6604.6717 1.8790240e+09 0.11198828 0.026470114 -30.021459 48.545548 6606.8839 1.7673848e+09 0.11097182 0.025915649 -30.130588 48.416578 6609.0961 1.6546238e+09 0.10791243 0.023734467 -30.239717 48.287609 6611.3082 1.5541534e+09 0.10504103 0.024761888 -30.340239 48.168810 6613.5204 1.4739487e+09 0.10381950 0.023764534 -30.435724 48.055962 6615.7326 1.4096741e+09 0.10197257 0.023274072 -30.534048 47.937845 6617.9448 1.3419415e+09 0.10085680 0.023752488 -30.638216 47.808876 6620.1570 1.2684213e+09 0.099783344 0.024817777 -30.742384 47.678364 6622.3691 1.1916071e+09 0.098094285 0.024659741 -30.846553 47.544433 6624.5813 1.1156030e+09 0.096074552 0.025173484 -30.950721 47.411964 6626.7935 1.0479758e+09 0.093809597 0.025579920 -31.054889 47.282993 6629.0057 9.8366746e+08 0.092111698 0.026108080 -31.157673 47.154022 6631.2178 9.2110006e+08 0.089895309 0.025952895 -31.256882 47.025053 6633.4300 8.6254699e+08 0.088034230 0.026227331 -31.356090 46.896083 6635.6422 8.0500887e+08 0.086227220 0.026496096 -31.455298 46.767112 6637.8544 7.5664653e+08 0.084998908 0.025742960 -31.551442 46.641052 6640.0666 7.1935682e+08 0.084914129 0.025262508 -31.638247 46.523866 6642.2787 6.9111107e+08 0.084986885 0.025163103 -31.725052 46.406680 6644.4909 6.6371669e+08 0.083997351 0.025396664 -31.823554 46.278380 6646.7031 6.2655274e+08 0.083003403 0.026284094 -31.922762 46.149409 6648.9153 5.8592103e+08 0.081919083 0.027576974 -32.021970 46.020440 6651.1275 5.4518377e+08 0.081702562 0.026581842 -32.121178 45.891470 6653.3396 5.1411899e+08 0.081288477 0.027699067 -32.215866 45.762499 6655.5518 4.9010874e+08 0.079714817 0.027838227 -32.310113 45.633528 6657.7640 4.6702730e+08 0.078018342 0.029787317 -32.404360 45.500118 6659.9762 4.4175855e+08 0.076550661 0.031630968 -32.498607 45.366187 6662.1883 4.1545382e+08 0.075024020 0.032938596 -32.592856 45.236617 6664.4005 3.9501110e+08 0.073831805 0.030740575 -32.687105 45.107647 6666.6127 3.8069233e+08 0.073530170 0.027027989 -32.777071 44.978678 6668.8249 3.7338242e+08 0.072075014 0.028200738 -32.866358 44.849708 6671.0371 3.6271402e+08 0.071845809 0.026865876 -32.949865 44.734397 6673.2492 3.5276340e+08 0.071115815 0.027831976 -33.032329 44.621550 6675.4614 3.4051842e+08 0.068997604 0.030682146 -33.118499 44.497250 6677.6736 3.2887785e+08 0.067189185 0.031400627 -33.207786 44.363320 6679.8858 3.1905417e+08 0.066974896 0.029535805 -33.297074 44.232005 6682.0980 3.0077889e+08 0.067575864 0.030499385 -33.386361 44.103035 6684.3101 2.8310948e+08 0.067637778 0.032669830 -33.475648 43.974065 6686.5223 2.6654705e+08 0.066591084 0.034064974 -33.564936 43.845092 6688.7345 2.5092833e+08 0.063925751 0.033954736 -33.651766 43.713664 6690.9467 2.3862809e+08 0.062949796 0.033007374 -33.736092 43.579734 6693.1588 2.2828027e+08 0.062282042 0.031549594 -33.822796 43.448181 6695.3710 2.1438357e+08 0.062028982 0.029791321 -33.912083 43.319212 6697.5832 2.0678799e+08 0.061570505 0.030165071 -33.999072 43.190242 6699.7954 1.9701228e+08 0.060330209 0.030856520 -34.083400 43.061273 6702.0076 1.8663698e+08 0.058850884 0.032882769 -34.163010 42.939516 6704.2197 1.8048488e+08 0.059508916 0.036285458 -34.236794 42.826669 6706.4319 1.7147863e+08 0.059723932 0.039198127 -34.312089 42.710799 6708.6441 1.6573541e+08 0.059534483 0.040744978 -34.396417 42.576867 6710.8563 1.6075236e+08 0.058240597 0.040664100 -34.480113 42.443568 6713.0685 1.5689891e+08 0.056497792 0.043934213 -34.559479 42.314598 6715.2806 1.5143562e+08 0.054816683 0.047665613 -34.639398 42.185629 6717.4928 1.4697790e+08 0.053046468 0.049843786 -34.723724 42.056658 6719.7050 1.3947627e+08 0.051847317 0.050700046 -34.807576 41.927213 6721.9172 1.3331805e+08 0.052420692 0.050580247 -34.886942 41.793282 6724.1293 1.2705231e+08 0.050526760 0.048846522 -34.966308 41.659746 6726.3415 1.1558318e+08 0.047547765 0.040954448 -35.045674 41.530776 6728.5537 1.1120995e+08 0.047405435 0.040412881 -35.125041 41.401807 6730.7659 1.0380528e+08 0.046338846 0.041429023 -35.204407 41.272838 6732.9781 1.0267675e+08 0.045432146 0.043920267 -35.283773 41.143868 6735.1902 98972926. 0.046181581 0.049495387 -35.363140 41.014896 6737.4024 92085462. 0.048553518 0.055417481 -35.442350 40.885767 6739.6146 90383598. 0.049301219 0.063578702 -35.516756 40.751837 6741.8268 85393496. 0.048094731 0.068116706 -35.591240 40.617983 6744.0390 80965781. 0.044081285 0.077823542 -35.670607 40.489014 6746.2511 73631701. 0.043339725 0.076067572 -35.749954 40.360045 6748.4633 69382116. 0.041521051 0.069454399 -35.824381 40.231074 6750.6755 65245205. 0.040391639 0.073157558 -35.898788 40.102102 6752.8877 63279524. 0.039837910 0.073107278 -35.973192 39.973133 6755.0998 62710808. 0.041588061 0.074561569 -36.047597 39.844164 6757.3120 56484391. 0.065769935 0.075793140 -36.122004 39.715194 6759.5242 56211482. 0.044809846 0.075946454 -36.196411 39.586223 6761.7364 54328535. 0.0019686782 0.078029064 -36.270816 39.452532