# # 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 = 61.719738 km # Date (UTC) = 2011-12-05T09:53:56.800 # Date (julian) = 2455900.91246296 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.3993 1.5028792e+11 0.062752596 0.033308261 104.46779 32.789978 6506.2977 1.1829884e+11 0.074494404 0.034182277 104.54234 32.645319 6509.1962 9.5162823e+10 0.086353225 0.035056293 104.61310 32.503786 6512.0946 7.7904049e+10 0.098409551 0.035930309 104.69061 32.353112 6514.9931 6.4645084e+10 0.11074695 0.036804325 104.77020 32.199644 6517.8915 5.4654099e+10 0.12354958 0.037678341 104.84604 32.058053 6520.7899 4.7000502e+10 0.13690340 0.038552357 104.92197 31.916204 6523.6884 4.0990289e+10 0.14598408 0.039349722 105.00158 31.762664 6526.5868 3.5842755e+10 0.15147588 0.040283281 105.07884 31.612320 6529.4852 3.1575420e+10 0.15587320 0.043008729 105.14960 31.470788 6532.3837 2.8218897e+10 0.15974640 0.047004713 105.22128 31.325799 6535.2821 2.5314506e+10 0.16122270 0.048101917 105.29521 31.172258 6538.1806 2.2535419e+10 0.16232713 0.049244600 105.37215 31.018717 6541.0790 1.9962022e+10 0.16280108 0.051300913 105.45176 30.865176 6543.9774 1.7858388e+10 0.16312818 0.051638423 105.52456 30.720878 6546.8759 1.6162169e+10 0.16422559 0.053185220 105.59534 30.579326 6549.7743 1.4714139e+10 0.16462806 0.054755353 105.66861 30.428270 6552.6727 1.3423311e+10 0.16375604 0.055417439 105.74243 30.275316 6555.5712 1.2318407e+10 0.16110353 0.054373442 105.81319 30.138838 6558.4696 1.1351310e+10 0.15772550 0.052839138 105.88414 30.001086 6561.3680 1.0451973e+10 0.15371879 0.051191315 105.95807 29.841859 6564.2665 9.5868871e+09 0.15039470 0.048650826 106.02955 29.689399 6567.1649 8.8104334e+09 0.14828031 0.046477741 106.09526 29.552920 6570.0634 8.1491345e+09 0.14664111 0.044891263 106.16359 29.410997 6572.9618 7.5687565e+09 0.14463868 0.043679360 106.23752 29.257457 6575.8602 7.0315388e+09 0.14213406 0.041511623 106.30684 29.113473 6578.7587 6.5479322e+09 0.13938864 0.037451585 106.37257 28.976977 6581.6571 6.1260458e+09 0.13703974 0.035397628 106.44307 28.827237 6584.5555 5.7198133e+09 0.13493493 0.034212885 106.51699 28.668010 6587.4540 5.3566836e+09 0.13288654 0.033258954 106.58415 28.527531 6590.3524 5.0293809e+09 0.13031458 0.030406512 106.64987 28.391053 6593.2509 4.7210598e+09 0.12732399 0.026869000 106.71772 28.240145 6596.1493 4.4029813e+09 0.12382659 0.025726595 106.78645 28.086604 6599.0477 4.0737467e+09 0.12142375 0.024932601 106.86038 27.933063 6601.9462 3.7762889e+09 0.12117710 0.027491281 106.92995 27.785126 6604.8446 3.5326786e+09 0.11953346 0.026572775 106.99061 27.648629 6607.7430 3.3101340e+09 0.11704912 0.024239767 107.05592 27.506157 6610.6415 3.0964352e+09 0.11244270 0.024615897 107.12985 27.352617 6613.5399 2.8992415e+09 0.11000346 0.023771687 107.19592 27.209181 6616.4384 2.7222960e+09 0.10728333 0.023351098 107.25658 27.072702 6619.3368 2.5626881e+09 0.10563073 0.024607176 107.32189 26.925751 6622.2352 2.4143379e+09 0.10379352 0.024695383 107.39013 26.772210 6625.1337 2.2759454e+09 0.10186243 0.025557106 107.45188 26.633264 6628.0321 2.1601158e+09 0.10000443 0.025716129 107.51254 26.496785 6630.9305 2.0529267e+09 0.098259292 0.025930595 107.57985 26.345343 6633.8290 1.9393071e+09 0.096740021 0.026296984 107.64809 26.191803 6636.7274 1.8150181e+09 0.095293448 0.026267268 107.71633 26.038263 6639.6259 1.7004415e+09 0.094847926 0.025404382 107.78184 25.890859 6642.5243 1.6119178e+09 0.095190446 0.025173151 107.84250 25.754362 6645.4227 1.5319875e+09 0.093949292 0.025649715 107.90606 25.611356 6648.3212 1.4613873e+09 0.092468517 0.027179271 107.97430 25.457815 6651.2196 1.3790893e+09 0.091674974 0.026652456 108.03900 25.307820 6654.1180 1.2911469e+09 0.090890973 0.027985941 108.10155 25.159967 6657.0165 1.2174277e+09 0.088496721 0.028920219 108.16247 25.021953 6659.9149 1.1558301e+09 0.086560636 0.031643747 108.22313 24.885476 6662.8133 1.1047062e+09 0.084520176 0.032587936 108.28546 24.733869 6665.7118 1.0511627e+09 0.083533064 0.027380847 108.34874 24.580328 6668.6102 9.9164995e+08 0.082137226 0.028010777 108.41698 24.426788 6671.5087 9.3634158e+08 0.081659062 0.026872597 108.48055 24.281416 6674.4071 8.9188326e+08 0.080147260 0.029298203 108.53616 24.149975 6677.3055 8.5063608e+08 0.077160172 0.031923871 108.59449 24.009881 6680.2040 8.1217356e+08 0.076918539 0.029485462 108.65705 23.856341 6683.1024 7.7154251e+08 0.077454061 0.031338660 108.72320 23.702801 6686.0008 7.2955218e+08 0.076706212 0.033761575 108.79144 23.549262 6688.8993 6.9503148e+08 0.072999564 0.033992775 108.85471 23.400694 6691.7977 6.5846961e+08 0.071823651 0.032813054 108.91726 23.252179 6694.6962 6.2657623e+08 0.071078950 0.030285328 108.97981 23.098639 6697.5946 5.9505532e+08 0.070555856 0.030166512 109.03988 22.953007 6700.4930 5.6744142e+08 0.068566147 0.031033412 109.09548 22.821584 6703.3915 5.4562382e+08 0.067889336 0.034654809 109.15372 22.681773 6706.2899 5.2317738e+08 0.067928063 0.038950959 109.21627 22.528232 6709.1883 5.0235263e+08 0.067187849 0.041012749 109.27530 22.378208 6712.0868 4.7656703e+08 0.064739518 0.041991076 109.33218 22.230331 6714.9852 4.5330796e+08 0.062272783 0.047377477 109.39395 22.077570 6717.8837 4.3132678e+08 0.059655197 0.049819610 109.45650 21.924622 6720.7821 4.0871303e+08 0.058781512 0.050329148 109.51906 21.776769 6723.6805 3.9217879e+08 0.057137406 0.049748485 109.58161 21.626950 6726.5790 3.7185616e+08 0.052683375 0.040956589 109.64416 21.473410 6729.4774 3.5486619e+08 0.051763593 0.040727228 109.70338 21.323207 6732.3758 3.3877452e+08 0.049643779 0.043809400 109.76025 21.175354 6735.2743 3.2260315e+08 0.049832037 0.049584595 109.82182 21.027499 6738.1727 3.0979785e+08 0.051712450 0.058271949 109.88398 20.879247 6741.0711 2.9404141e+08 0.050713080 0.065961612 109.94085 20.725707 6743.9696 2.7719913e+08 0.045098121 0.077588241 109.99772 20.573939 6746.8680 2.6271236e+08 0.040356405 0.068895538 110.05458 20.426086 6749.7665 2.5042521e+08 0.038072770 0.072068075 110.11460 20.278220 6752.6649 2.4029514e+08 0.034666120 0.073365066 110.17716 20.130344 6755.5633 2.3326704e+08 0.032228893 0.074358359 110.23520 19.982486 6758.4618 2.2371125e+08 0.031338422 0.074681800 110.29207 19.834425 6761.3602 2.1490038e+08 0.033184598 0.077997985 110.34893 19.680884 6764.2586 2.0397544e+08 0.038723736 0.079495677 110.40806 19.523054 6767.1571 1.9197927e+08 0.039133549 0.081799873 110.47305 19.354075 6770.0555 1.8319156e+08 0.033000187 0.087014361 110.53203 19.200711 6772.9540 1.7470173e+08 0.027732460 0.094044345 110.58890 19.052857 6775.8524 1.6697858e+08 0.022427434 0.10107433 110.64577 18.905004 6778.7508 1.6073672e+08 0.017068702 0.10810431 110.70264 18.757151 6781.6493 1.5332952e+08 0.011701787 0.11513430 110.75950 18.609297 6784.5477 1.4770710e+08 0.0062789725 0.12216428 110.82014 18.451647 6787.4461 1.3996311e+08 0.00085656667 0.12919427 110.88513 18.282668 6790.3446 1.3174068e+08 -0.0045975712 0.13622425 110.94260 18.133231 6793.2430 1.2823129e+08 -0.010130190 0.14325424 110.99947 17.985377 6796.1415 1.2271388e+08 -0.015672286 0.15028422 111.05633 17.837523 6799.0399 1.1794018e+08 -0.021243814 0.15731420 111.11652 17.681049 6801.9383 1.1168689e+08 -0.026851131 0.16434419 111.18151 17.512070 6804.8368 1.0560819e+08 -0.032500881 0.17137417 111.23450 17.361457 6807.7352 1.0268673e+08 -0.038139502 0.17840416 111.28721 17.211259 6810.6336 99018551. -0.043800732 0.18543414 111.35220 17.042280 6813.5321 93705478. -0.049513869 0.19246413 111.41254 16.885390 6816.4305 89391651. -0.055208522 0.19949411 111.46941 16.737536 6819.3290 84912274. -0.060925357 0.20652409 111.52760 16.572493 6822.2274 80955769. -0.066649128 0.21355408 111.58788 16.405302 6825.1258 80820856. -0.072145737 0.22058406 111.65287 16.242822 6828.0243 78373288. -0.077818744 0.22761405 111.70770 16.091097 6830.9227 76902601. -0.083447890 0.23464403 111.75889 15.943219 6833.8211 75622108. -0.089110240 0.24167402 111.82357 15.774729 6836.7196 72373106. -0.095084298 0.24870400 111.88570 15.605766 6839.6180 71708100. -0.10092280 0.25573398 111.94419 15.436787 6842.5164 67985810. -0.10748019 0.26276397 112.00268 15.273661 6845.4149 62776316. -0.11501694 0.26979395 112.06353 15.108828 6848.3133 58383609. -0.12389220 0.27682394 112.12852 14.939849 6851.2118 55267397. -0.13644754 0.28385392 112.18215 14.788245 6854.1102 54204502. -0.18196148 0.29088391 112.23381 14.639419 6857.0086 51219381. -0.15419706 0.29791389 112.29229 14.476967 6859.9071 47140794. -0.077732606 0.30494387 112.35078 14.311080