# # 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 = 46.138658 km # Date (UTC) = 2011-12-16T00:06:18.133 # Date (julian) = 2455911.50437654 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.6782 2.4799896e+11 0.045654084 0.031583080 113.91492 46.755124 6499.8380 2.0567700e+11 0.053221267 0.032234368 113.82397 46.660389 6501.9979 1.7033378e+11 0.060545227 0.032885656 113.73357 46.566223 6504.1577 1.4282157e+11 0.067685163 0.033536944 113.64429 46.472057 6506.3175 1.2053994e+11 0.074744088 0.034188232 113.55766 46.377892 6508.4773 1.0213408e+11 0.081825291 0.034839520 113.47103 46.283726 6510.6371 8.7510083e+10 0.089105270 0.035490808 113.38440 46.189560 6512.7970 7.6138402e+10 0.096820871 0.036142096 113.29776 46.095394 6514.9568 6.6692864e+10 0.10504821 0.036793384 113.21111 46.001211 6517.1166 5.8419042e+10 0.11382612 0.037444672 113.11380 45.895428 6519.2764 5.1199390e+10 0.12323181 0.038095960 113.01632 45.789474 6521.4362 4.4941271e+10 0.13335081 0.038747248 112.92801 45.690917 6523.5960 3.9989920e+10 0.13986959 0.039326842 112.84514 45.596751 6525.7559 3.6148669e+10 0.14507204 0.039695949 112.76228 45.502585 6527.9157 3.2949275e+10 0.15123188 0.041381273 112.67575 45.408420 6530.0755 3.0176547e+10 0.15700124 0.043934408 112.58911 45.314254 6532.2353 2.7732848e+10 0.16194735 0.046880784 112.50368 45.220088 6534.3951 2.5594625e+10 0.16566196 0.048055096 112.42081 45.125922 6536.5550 2.3626475e+10 0.16778774 0.048287046 112.33794 45.031757 6538.7148 2.1739996e+10 0.16917057 0.049504745 112.25102 44.929789 6540.8746 1.9866959e+10 0.16863035 0.051267290 112.16203 44.823850 6543.0344 1.8121521e+10 0.16687834 0.051390929 112.07490 44.720333 6545.1942 1.6631325e+10 0.16540109 0.052457307 111.99202 44.622389 6547.3541 1.5412049e+10 0.16386242 0.053422010 111.90914 44.524444 6549.5139 1.4383128e+10 0.16245682 0.054489972 111.82871 44.428949 6551.6737 1.3405519e+10 0.16140533 0.055472233 111.74961 44.334784 6553.8335 1.2489879e+10 0.15990131 0.054916064 111.67052 44.240618 6555.9933 1.1632581e+10 0.15840545 0.054018715 111.59142 44.146452 6558.1532 1.0827088e+10 0.15744255 0.053108787 111.51232 44.052286 6560.3130 1.0104252e+10 0.15574372 0.051992111 111.43322 43.958121 6562.4728 9.4827622e+09 0.15389052 0.050430010 111.35412 43.863955 6564.6326 8.9382290e+09 0.15203710 0.048484891 111.27502 43.769789 6566.7924 8.3994045e+09 0.15058680 0.046734600 111.19205 43.667564 6568.9523 7.8377554e+09 0.14915312 0.044896303 111.10729 43.561610 6571.1121 7.2797918e+09 0.14827380 0.044472662 111.02436 43.459478 6573.2719 6.7836405e+09 0.14688251 0.043439284 110.94526 43.365312 6575.4317 6.3696856e+09 0.14494812 0.041941551 110.86616 43.271146 6577.5915 6.0044825e+09 0.14253967 0.039291198 110.78958 43.176981 6579.7514 5.6722260e+09 0.13968189 0.036657439 110.71425 43.082815 6581.9112 5.3673690e+09 0.13673523 0.035320690 110.63892 42.988595 6584.0710 5.0910818e+09 0.13371101 0.034476832 110.56359 42.890661 6586.2308 4.8379588e+09 0.13111999 0.033168312 110.48825 42.792728 6588.3906 4.5872681e+09 0.12929604 0.033249474 110.41106 42.691917 6590.5505 4.3119977e+09 0.12724052 0.030038117 110.33055 42.585979 6592.7103 4.0270411e+09 0.12539162 0.027383623 110.25006 42.480095 6594.8701 3.7690711e+09 0.12335414 0.025694878 110.17469 42.385859 6597.0299 3.5478161e+09 0.12099507 0.025713284 110.09935 42.291680 6599.1897 3.3663960e+09 0.11933512 0.024941142 110.02531 42.197507 6601.3496 3.2035291e+09 0.11920778 0.027210314 109.95374 42.103341 6603.5094 3.0460273e+09 0.11785849 0.026361720 109.88217 42.009175 6605.6692 2.8899786e+09 0.11717599 0.027226451 109.80443 41.906884 6607.8290 2.7168422e+09 0.11514475 0.024069987 109.72392 41.800946 6609.9888 2.5460482e+09 0.11211921 0.023999664 109.64636 41.698896 6612.1487 2.3880429e+09 0.10964568 0.024209676 109.57480 41.604731 6614.3085 2.2593836e+09 0.10830420 0.023727960 109.50323 41.510565 6616.4683 2.1523780e+09 0.10636446 0.023355799 109.43166 41.416391 6618.6281 2.0605771e+09 0.10509142 0.024245103 109.36008 41.322212 6620.7879 1.9713790e+09 0.10364664 0.025021111 109.28841 41.227789 6622.9478 1.8716291e+09 0.10158634 0.024505730 109.21213 41.121851 6625.1076 1.7653877e+09 0.099543542 0.025525982 109.13586 41.015912 6627.2674 1.6563242e+09 0.096915110 0.025420103 109.06518 40.915266 6629.4272 1.5640256e+09 0.095049986 0.026031862 108.99739 40.817335 6631.5870 1.4859610e+09 0.092559428 0.025990397 108.92959 40.719428 6633.7469 1.4184301e+09 0.090543905 0.026282647 108.86179 40.625261 6635.9067 1.3581682e+09 0.088737297 0.026535758 108.79399 40.531095 6638.0665 1.2981852e+09 0.087704788 0.025668745 108.72321 40.432795 6640.2263 1.2301209e+09 0.087822030 0.025242961 108.64694 40.326856 6642.3861 1.1622485e+09 0.087912472 0.025167498 108.57068 40.220947 6644.5460 1.0987643e+09 0.087015618 0.025402613 108.50278 40.126637 6646.7058 1.0442591e+09 0.085955605 0.026285482 108.43497 40.032459 6648.8656 1.0010486e+09 0.084703260 0.027543720 108.36431 39.934320 6651.0254 9.5196069e+08 0.084288694 0.026503646 108.28803 39.828382 6653.1852 9.0300793e+08 0.083857204 0.027620238 108.21176 39.722444 6655.3451 8.5748566e+08 0.082398238 0.027752795 108.14744 39.628007 6657.5049 8.1425642e+08 0.080596928 0.029486755 108.08341 39.533842 6659.6647 7.8257212e+08 0.078955338 0.031695942 108.01680 39.435885 6661.8245 7.4397697e+08 0.077383847 0.032954895 107.94476 39.329946 6663.9843 7.0636043e+08 0.075858800 0.032210428 107.87273 39.224007 6666.1442 6.6905027e+08 0.075822866 0.026936686 107.80839 39.129396 6668.3040 6.3552331e+08 0.074784286 0.027739774 107.74435 39.035231 6670.4638 6.0854825e+08 0.074210546 0.027113762 107.67786 38.937448 6672.6236 5.7671391e+08 0.073723782 0.027241059 107.60582 38.831510 6674.7834 5.5043645e+08 0.072194529 0.029615672 107.53379 38.725572 6676.9433 5.2045619e+08 0.069783377 0.032321648 107.46933 38.630775 6679.1031 4.9607960e+08 0.069025596 0.030182593 107.40529 38.536597 6681.2629 4.7551379e+08 0.069982778 0.029859049 107.34014 38.438975 6683.4227 4.5290048e+08 0.070524630 0.031808078 107.27234 38.333037 6685.5825 4.3478736e+08 0.070311526 0.033320140 107.20454 38.227099 6687.7424 4.1784149e+08 0.068304154 0.033928881 107.14025 38.132144 6689.9022 4.0213483e+08 0.066336687 0.033203921 107.07622 38.037978 6692.0620 3.8558111e+08 0.065408717 0.032693336 107.01114 37.940538 6694.2218 3.6776401e+08 0.064663015 0.030950140 106.94334 37.834599 6696.3816 3.4951309e+08 0.064570481 0.029834348 106.87555 37.728661 6698.5415 3.3078414e+08 0.063635458 0.030961027 106.80774 37.622723 6700.7013 3.1737392e+08 0.061910547 0.031187874 106.73994 37.516785 6702.8611 3.0283324e+08 0.061334474 0.033564319 106.67635 37.417421 6705.0209 2.8898347e+08 0.061526658 0.036705789 106.61608 37.323255 6707.1807 2.7924188e+08 0.061066748 0.040160936 106.55582 37.229090 6709.3406 2.6747236e+08 0.060258719 0.040915934 106.48874 37.124273 6711.5004 2.5682030e+08 0.058256288 0.041261522 106.42092 37.018318 6713.6602 2.4370915e+08 0.056045330 0.046074406 106.35542 36.912373 6715.8200 2.2820602e+08 0.054151926 0.048217276 106.29186 36.806435 6717.9798 2.1524192e+08 0.051936746 0.049813661 106.22752 36.700497 6720.1397 2.0410790e+08 0.050671295 0.050403585 106.15972 36.594559 6722.2995 1.9360670e+08 0.050270249 0.050234976 106.09192 36.488621 6724.4593 1.8431434e+08 0.046972851 0.046091263 106.03343 36.392386 6726.6191 1.7612118e+08 0.043847849 0.040956951 105.97693 36.298220 6728.7789 1.6906501e+08 0.043173641 0.040732104 105.91852 36.202061 6730.9388 1.6157741e+08 0.041245022 0.041666048 105.85072 36.096123 6733.0986 1.5496885e+08 0.039874135 0.044459488 105.78291 35.990185 6735.2584 1.5075429e+08 0.040093453 0.049567736 105.71855 35.884246 6737.4182 1.4361943e+08 0.041474610 0.055467792 105.65499 35.778308 6739.5780 1.3774677e+08 0.041572128 0.063533954 105.59142 35.672369 6741.7379 1.2966511e+08 0.039509236 0.067863090 105.52786 35.566431 6743.8977 1.2294135e+08 0.034662441 0.077103112 105.46468 35.460492 6746.0575 1.1752610e+08 0.033052780 0.078318868 105.40534 35.354538 6748.2173 1.1179511e+08 0.028999093 0.068160185 105.34601 35.248584 6750.3771 1.0955041e+08 0.026187902 0.072648099 105.28359 35.142642 6752.5370 1.0434027e+08 0.023250538 0.073513123 105.22002 35.036704 6754.6968 99114729. 0.021555753 0.075092975 105.15646 34.930765 6756.8566 93248500. 0.018582890 0.076371044 105.09289 34.824827 6759.0164 86994055. 0.019120933 0.075823915 105.02938 34.718888 6761.1762 85411421. 0.019993106 0.077982785 104.97005 34.612950 6763.3361 81922907. 0.024781998 0.077461214 104.91073 34.507012 6765.4959 76858821. 0.026572423 0.079621716 104.84864 34.401074 6767.6557 71394650. 0.024264333 0.081241563 104.78508 34.295136 6769.8155 68679348. 0.019131316 0.086432232 104.72275 34.190430 6771.9753 68641219. 0.014906032 0.091670744 104.66342 34.088728 6774.1351 67000579. 0.010177515 0.096909257 104.60410 33.987027 6776.2950 66473307. 0.0050619178 0.10214777 104.54477 33.881382 6778.4548 62553154. -0.0018300015 0.10738628 104.48545 33.775444 6780.6146 60290841. -0.011904974 0.11262479 104.42128 33.660862 6782.7744 59662162. -0.051654606 0.11786331 104.35348 33.539786 6784.9342 57256385. -0.025195826 0.12310182 104.28997 33.426373 6787.0941 55365547. 0.039099495 0.12834033 104.23064 33.320435