# # 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 = 46.592185 km # Date (UTC) = 2011-01-06T08:59:22.112 # Date (julian) = 2455567.87456149 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.7328 2.2090110e+11 0.052634783 0.032504194 114.85075 42.424984 6503.1074 1.7485557e+11 0.062815377 0.033220230 114.94393 42.299196 6505.4819 1.3377979e+11 0.072906339 0.033936266 115.03575 42.174764 6507.8565 1.0532350e+11 0.083169190 0.034652302 115.12427 42.053636 6510.2310 8.5080357e+10 0.093707334 0.035368338 115.21345 41.931834 6512.6055 7.0267601e+10 0.10460881 0.036084374 115.30663 41.806047 6514.9801 5.9284233e+10 0.11598725 0.036800410 115.39976 41.680319 6517.3546 5.1247818e+10 0.12799644 0.037516446 115.47853 41.572538 6519.7291 4.5118708e+10 0.14063566 0.038232482 115.55722 41.464854 6522.1037 4.0080004e+10 0.15351092 0.038944403 115.63892 41.346609 6524.4782 3.5569445e+10 0.16062519 0.039596853 115.72278 41.220823 6526.8528 3.1416807e+10 0.16683143 0.040562113 115.80868 41.097072 6529.2273 2.7726928e+10 0.17140369 0.042597863 115.89719 40.975942 6531.6018 2.4471880e+10 0.17591900 0.046104672 115.98436 40.853458 6533.9764 2.1559948e+10 0.17861052 0.047934521 116.06822 40.727671 6536.3509 1.9111281e+10 0.17936042 0.048104482 116.15073 40.604493 6538.7255 1.7190890e+10 0.18004027 0.049509943 116.22527 40.496825 6541.1000 1.5656820e+10 0.17828195 0.051294098 116.29981 40.389157 6543.4745 1.4319536e+10 0.17523556 0.051506439 116.38115 40.271673 6545.8491 1.3054186e+10 0.17150873 0.052463174 116.46501 40.150543 6548.2236 1.1848620e+10 0.16883778 0.053734426 116.54887 40.026689 6550.5982 1.0783702e+10 0.16630655 0.055135133 116.63274 39.900884 6552.9727 9.8413261e+09 0.16402408 0.055341939 116.71661 39.777120 6555.3472 8.9697927e+09 0.16129687 0.054561602 116.80047 39.655990 6557.7218 8.2199088e+09 0.15853263 0.053413696 116.88042 39.537564 6560.0963 7.6277510e+09 0.15539869 0.052187468 116.95082 39.425755 6562.4709 7.1291262e+09 0.15183433 0.050431868 117.02122 39.313945 6564.8454 6.6838330e+09 0.14863661 0.048388465 117.10340 39.193979 6567.2199 6.2309414e+09 0.14582882 0.046431228 117.18726 39.072851 6569.5945 5.7610404e+09 0.14342071 0.044891115 117.26772 38.948327 6571.9690 5.3295469e+09 0.14118644 0.044238619 117.34692 38.822539 6574.3436 4.9400667e+09 0.13811905 0.042689999 117.42099 38.707302 6576.7181 4.6187827e+09 0.13504892 0.040544857 117.49139 38.599633 6579.0926 4.3417591e+09 0.13116113 0.037019575 117.56249 38.489709 6581.4672 4.0708434e+09 0.12786351 0.035455144 117.63703 38.368581 6583.8417 3.7924381e+09 0.12462526 0.034595632 117.71166 38.247355 6586.2162 3.5112368e+09 0.12143008 0.033168501 117.79088 38.121548 6588.5908 3.2609443e+09 0.11847816 0.033182636 117.87009 37.995741 6590.9653 3.0200793e+09 0.11463038 0.029266410 117.94521 37.874027 6593.3399 2.7932071e+09 0.11104909 0.026786250 118.01976 37.752899 6595.7144 2.5964948e+09 0.10697008 0.025697657 118.09128 37.641575 6598.0889 2.4298041e+09 0.10395324 0.025364701 118.16168 37.533905 6600.4635 2.2936510e+09 0.10288913 0.025942708 118.23337 37.420554 6602.8380 2.1590516e+09 0.10206276 0.026801500 118.30792 37.294767 6605.2126 2.0182029e+09 0.10142532 0.026843364 118.38246 37.169758 6607.5871 1.8830221e+09 0.099881152 0.024547694 118.45700 37.048630 6609.9616 1.7525962e+09 0.096969059 0.023991584 118.53154 36.927502 6612.3362 1.6331292e+09 0.094866117 0.024069572 118.60608 36.806372 6614.7107 1.5225400e+09 0.093992491 0.023450836 118.68062 36.685242 6617.0853 1.4302945e+09 0.092716582 0.023467516 118.74431 36.572248 6619.4598 1.3560726e+09 0.092103449 0.024636855 118.80643 36.460425 6621.8343 1.2843146e+09 0.091040624 0.024812903 118.87426 36.344324 6624.2089 1.2121491e+09 0.089155269 0.024974119 118.94880 36.223194 6626.5834 1.1398250e+09 0.087572268 0.025847581 119.02189 36.102064 6628.9580 1.0684771e+09 0.086167058 0.026092033 119.09177 35.980936 6631.3325 1.0044506e+09 0.084374912 0.025964540 119.16165 35.859808 6633.7070 9.4148491e+08 0.082856056 0.026275693 119.23153 35.738678 6636.0816 8.8178000e+08 0.081217327 0.026518076 119.30126 35.617737 6638.4561 8.3021364e+08 0.080042061 0.025651771 119.36337 35.505927 6640.8306 7.8899226e+08 0.080236219 0.025169021 119.42549 35.394117 6643.2052 7.5458155e+08 0.079586680 0.025223599 119.49230 35.276666 6645.5797 7.1928233e+08 0.078244049 0.025723265 119.56219 35.155538 6647.9543 6.8314428e+08 0.077045060 0.026940205 119.63207 35.034410 6650.3288 6.4324496e+08 0.076347409 0.026330510 119.70195 34.913282 6652.7033 6.0681411e+08 0.076153108 0.027444040 119.77184 34.792148 6655.0779 5.7221808e+08 0.075379873 0.027642398 119.84173 34.671000 6657.4524 5.3816728e+08 0.073897807 0.029425907 119.91085 34.549856 6659.8270 5.0732620e+08 0.072822543 0.031662093 119.97607 34.428728 6662.2015 4.8028347e+08 0.071676945 0.032931217 120.04123 34.307866 6664.5760 4.5421477e+08 0.071049726 0.030098380 120.10335 34.200197 6666.9506 4.2972590e+08 0.071193590 0.027093827 120.16547 34.092527 6669.3251 4.0771595e+08 0.070419502 0.028021783 120.22946 33.973896 6671.6997 3.8984133e+08 0.070687547 0.026875319 120.29469 33.848108 6674.0742 3.7335860e+08 0.070097184 0.029017381 120.35991 33.724457 6676.4487 3.5908079e+08 0.067882637 0.032002932 120.42513 33.603329 6678.8233 3.3882227e+08 0.067217333 0.030385972 120.49035 33.482201 6681.1978 3.2019755e+08 0.068477297 0.029809119 120.55558 33.361071 6683.5724 3.0209219e+08 0.069182046 0.032027372 120.62080 33.239941 6685.9469 2.8351429e+08 0.068909546 0.033704990 120.68602 33.118813 6688.3214 2.7111476e+08 0.066223885 0.033859388 120.75125 32.997684 6690.6960 2.5724051e+08 0.064638396 0.033036105 120.81647 32.876556 6693.0705 2.4173082e+08 0.063823825 0.031579899 120.88169 32.755428 6695.4451 2.2929038e+08 0.063282664 0.029777723 120.94692 32.634283 6697.8196 2.1841589e+08 0.062491324 0.030194986 121.01216 32.513135 6700.1941 2.0940494e+08 0.060658468 0.030811709 121.07400 32.392002 6702.5687 2.0330409e+08 0.059298985 0.033330814 121.13457 32.270874 6704.9432 1.9218845e+08 0.059566086 0.036640718 121.19783 32.149745 6707.3177 1.8068811e+08 0.059156185 0.040141309 121.26306 32.028615 6709.6923 1.7120414e+08 0.058125929 0.040692216 121.32626 31.907486 6712.0668 1.6250293e+08 0.055702050 0.041954029 121.38682 31.786357 6714.4414 1.5624084e+08 0.053205728 0.047336590 121.44739 31.665228 6716.8159 1.5142879e+08 0.050785164 0.049603110 121.50795 31.544099 6719.1904 1.4045118e+08 0.048045463 0.051188905 121.56851 31.422971 6721.5650 1.3134794e+08 0.047934316 0.050474131 121.62908 31.301842 6723.9395 1.2491866e+08 0.045451734 0.049892931 121.68965 31.180713 6726.3141 1.1880942e+08 0.040803073 0.040954200 121.75021 31.059584 6728.6886 1.1474659e+08 0.039565043 0.040604070 121.81077 30.938455 6731.0631 1.0909025e+08 0.037009138 0.041875681 121.87134 30.821275 6733.4377 1.0111884e+08 0.034789118 0.046300584 121.93190 30.704804 6735.8122 97119387. 0.035123103 0.050155660 121.99246 30.585067 6738.1868 92266538. 0.035638455 0.058349266 122.05303 30.463939 6740.5613 88930678. 0.034214355 0.065009238 122.11360 30.342800 6742.9358 89805386. 0.030295670 0.070891088 122.17417 30.221653 6745.3104 85487101. 0.025978054 0.078697365 122.23474 30.100513 6747.6849 82152467. 0.020712062 0.067125372 122.29530 29.979384 6750.0595 74045424. 0.016308389 0.072105648 122.35674 29.853720 6752.4340 70484544. 0.012109228 0.073632268 122.42064 29.715284 6754.8085 69094683. 0.0092697807 0.074913253 122.48146 29.583493 6757.1831 66459942. 0.0046336574 0.076184490 122.53737 29.462364 6759.5576 64903575. 0.0031153820 0.075954515 122.59438 29.342342 6761.9321 60036029. 0.00075556916 0.078045238 122.65495 29.225872 6764.3067 58221677. -0.0062426063 0.079497978 122.71509 29.108978 6766.6812 58240656. -0.065442186 0.081254693 122.77099 28.987849 6769.0558 55098210. -0.019908134 0.084589516 122.82690 28.866721 6771.4303 50036626. 0.097756998 0.090348818 122.89035 28.729245