# # 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 = 47.913136 km # Date (UTC) = 2015-12-30T10:28:13.113 # Date (julian) = 2457386.93626288 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.8860 6.6924481e+10 0.064683073 0.033455032 99.637636 30.164730 6505.9906 5.9855453e+10 0.074469496 0.034089663 99.693729 30.053522 6508.0952 5.3657602e+10 0.084489038 0.034724294 99.745120 29.954411 6510.1998 4.8739180e+10 0.094864604 0.035358925 99.796511 29.855300 6512.3044 4.4782734e+10 0.10561985 0.035993556 99.847898 29.756196 6514.4089 4.0977332e+10 0.11656089 0.036628187 99.899281 29.657099 6516.5135 3.7547797e+10 0.12776037 0.037262818 99.950665 29.558002 6518.6181 3.4414038e+10 0.13918557 0.037897449 100.00205 29.458904 6520.7227 3.1576673e+10 0.15083256 0.038532079 100.05343 29.359805 6522.8273 2.9135337e+10 0.16044973 0.039133880 100.10447 29.260707 6524.9318 2.6850518e+10 0.16720113 0.039758003 100.15219 29.161609 6527.0364 2.4855626e+10 0.17211373 0.040742916 100.19990 29.062511 6529.1410 2.2890087e+10 0.17536465 0.042460398 100.25135 28.957314 6531.2456 2.0876898e+10 0.17842934 0.045586138 100.30915 28.841697 6533.3502 1.8910680e+10 0.18114141 0.047668399 100.36696 28.726081 6535.4548 1.7091740e+10 0.18138619 0.048027027 100.41521 28.626102 6537.5593 1.5569363e+10 0.18145651 0.048948927 100.46293 28.526992 6539.6639 1.4287127e+10 0.18039400 0.050447280 100.51065 28.427884 6541.7685 1.3154665e+10 0.17756722 0.051077312 100.55836 28.328786 6543.8731 1.2131695e+10 0.17452492 0.051611036 100.60607 28.229687 6545.9777 1.1217462e+10 0.17159140 0.052464326 100.65562 28.130589 6548.0822 1.0418662e+10 0.16992288 0.053692206 100.70700 28.031491 6550.1868 9.6720168e+09 0.16796866 0.055032138 100.75839 27.932393 6552.2914 8.9775837e+09 0.16581516 0.055513421 100.80693 27.833285 6554.3960 8.3769884e+09 0.16315070 0.054840690 100.85466 27.734173 6556.5006 7.7925157e+09 0.16059361 0.053939533 100.90268 27.634445 6558.6051 7.2137166e+09 0.15796699 0.052723645 100.95635 27.522959 6560.7097 6.6419741e+09 0.15504516 0.051634398 101.01003 27.411473 6562.8143 6.1047089e+09 0.15245984 0.050105058 101.05996 27.307766 6564.9189 5.6674071e+09 0.14987357 0.048355156 101.10768 27.208668 6567.0235 5.3033647e+09 0.14734481 0.046597341 101.15540 27.109570 6569.1281 4.9667108e+09 0.14485948 0.044860759 101.19979 27.010472 6571.2326 4.6519068e+09 0.14293001 0.044439738 101.24383 26.911374 6573.3372 4.3612467e+09 0.14054323 0.043386874 101.28853 26.812276 6575.4418 4.1059776e+09 0.13786853 0.041931446 101.33625 26.713177 6577.5464 3.8664780e+09 0.13492606 0.039362144 101.38396 26.614079 6579.6510 3.6546488e+09 0.13163287 0.036712636 101.43168 26.516643 6581.7555 3.4643985e+09 0.12850341 0.035367821 101.47940 26.421202 6583.8601 3.2795390e+09 0.12542111 0.034586311 101.52712 26.325762 6585.9647 3.1070939e+09 0.12232019 0.033199515 101.57618 26.218607 6588.0693 2.9159878e+09 0.11998452 0.033356793 101.62573 26.107120 6590.1739 2.7320204e+09 0.11725768 0.030738649 101.67358 25.999452 6592.2784 2.5641099e+09 0.11460687 0.027803069 101.71762 25.900354 6594.3830 2.4227063e+09 0.11231876 0.025962259 101.76166 25.801256 6596.4876 2.3000386e+09 0.10979845 0.025725057 101.80785 25.702158 6598.5922 2.1939177e+09 0.10797999 0.025124432 101.85557 25.603060 6600.6968 2.0896775e+09 0.10773577 0.026422311 101.90328 25.503962 6602.8014 1.9783485e+09 0.10693974 0.026832790 101.95257 25.394220 6604.9059 1.8674246e+09 0.10617843 0.026609191 102.00212 25.282733 6607.0105 1.7544919e+09 0.10514667 0.025686228 102.04926 25.178263 6609.1151 1.6546898e+09 0.10224129 0.023740121 102.09331 25.082823 6611.2197 1.5745601e+09 0.099490242 0.024818365 102.13736 24.987382 6613.3243 1.5047917e+09 0.098481469 0.023692562 102.18141 24.889334 6615.4288 1.4403727e+09 0.097069219 0.023264726 102.22545 24.790237 6617.5334 1.3759140e+09 0.095992918 0.023616104 102.26949 24.691139 6619.6380 1.3131657e+09 0.095231016 0.024679854 102.31354 24.592041 6621.7426 1.2576334e+09 0.094012394 0.024843313 102.35758 24.492942 6623.8472 1.2040164e+09 0.092033827 0.024805688 102.40308 24.391664 6625.9517 1.1475319e+09 0.090808273 0.026533326 102.45263 24.284306 6628.0563 1.0847030e+09 0.089025561 0.025725965 102.50218 24.176948 6630.1609 1.0244761e+09 0.087538848 0.025928698 102.54709 24.076546 6632.2655 9.7383715e+08 0.085695581 0.026064180 102.59113 23.977448 6634.3701 9.3336685e+08 0.084077851 0.026353838 102.63582 23.877378 6636.4747 8.9370672e+08 0.082586943 0.026365425 102.68538 23.770004 6638.5792 8.4777777e+08 0.081755374 0.025646407 102.73494 23.662630 6640.6838 8.0258736e+08 0.082455737 0.025186986 102.77810 23.561017 6642.7884 7.6338133e+08 0.082510857 0.025183959 102.81848 23.461919 6644.8930 7.2952643e+08 0.081801268 0.025440118 102.85885 23.362821 6646.9976 6.9900579e+08 0.080851040 0.026436518 102.90279 23.267289 6649.1021 6.6478453e+08 0.079929217 0.027492888 102.94684 23.171861 6651.2067 6.3461550e+08 0.079776977 0.026642590 102.99122 23.072468 6653.3113 6.0392517e+08 0.079526602 0.027684603 103.03664 22.960981 6655.4159 5.7377671e+08 0.078289358 0.027782062 103.08206 22.849494 6657.5205 5.4629058e+08 0.076773720 0.029504838 103.12634 22.751258 6659.6250 5.2003451e+08 0.075464546 0.031704212 103.17038 22.655830 6661.7296 5.0135999e+08 0.074099747 0.032906566 103.21457 22.558786 6663.8342 4.7941845e+08 0.072842557 0.032252032 103.26000 22.447281 6665.9388 4.5687092e+08 0.072915335 0.027008884 103.30542 22.335777 6668.0434 4.3175069e+08 0.072295933 0.027509159 103.34742 22.235191 6670.1480 4.1208343e+08 0.071783899 0.027260087 103.38779 22.139764 6672.2525 3.9206088e+08 0.071522911 0.027025975 103.42817 22.044337 6674.3571 3.7437855e+08 0.070511996 0.029256044 103.47730 21.937522 6676.4617 3.5991102e+08 0.068271982 0.032011287 103.52685 21.830164 6678.5663 3.4011538e+08 0.067469056 0.030557861 103.57151 21.727206 6680.6709 3.2458374e+08 0.068153683 0.029586284 103.61189 21.628108 6682.7754 3.1061906e+08 0.068820760 0.031017012 103.65226 21.529010 6684.8800 3.0141593e+08 0.068787007 0.032698749 103.69671 21.423236 6686.9846 2.9089212e+08 0.067342924 0.034333944 103.74213 21.315878 6689.0892 2.8158974e+08 0.064770222 0.033935741 103.78560 21.213124 6691.1938 2.6852017e+08 0.064084489 0.032955546 103.82598 21.117684 6693.2984 2.6067695e+08 0.063359695 0.031501736 103.86636 21.022244 6695.4029 2.5343274e+08 0.063041547 0.029785460 103.91007 20.916178 6697.5075 2.3916465e+08 0.062568927 0.030155492 103.95549 20.804691 6699.6121 2.2561271e+08 0.061321100 0.031025644 104.00091 20.694196 6701.7167 2.1272183e+08 0.059752055 0.032461013 104.04634 20.586838 6703.8213 2.0596123e+08 0.060016611 0.035730282 104.09176 20.479480 6705.9258 2.0193770e+08 0.060092470 0.038314560 104.13305 20.381888 6708.0304 1.9901426e+08 0.059797458 0.040076704 104.17342 20.286461 6710.1350 1.9067140e+08 0.058684621 0.040522919 104.21388 20.189913 6712.2396 1.7996566e+08 0.056719331 0.042274783 104.25517 20.082555 6714.3442 1.6893031e+08 0.054794188 0.047329283 104.29646 19.975196 6716.4487 1.6064626e+08 0.053101232 0.049062320 104.34053 19.867838 6718.5533 1.5728687e+08 0.050940091 0.050674178 104.38595 19.760480 6720.6579 1.5293431e+08 0.050809046 0.050343536 104.43137 19.653123 6722.7625 1.4784798e+08 0.050192485 0.049662569 104.47679 19.545765 6724.8671 1.3849158e+08 0.046396430 0.042686069 104.52221 19.438407 6726.9717 1.2930458e+08 0.044568695 0.040960131 104.56041 19.340923 6729.0762 1.2439089e+08 0.044355902 0.040994616 104.59712 19.245483 6731.1808 1.1695443e+08 0.042739577 0.042109878 104.63474 19.148799 6733.2854 1.1242472e+08 0.041781732 0.045473801 104.68016 19.041441 6735.3900 1.0637173e+08 0.042590493 0.049707421 104.72558 18.934082 6737.4946 1.0124731e+08 0.044261293 0.055710992 104.76818 18.826724 6739.5991 97958813. 0.044669014 0.063559784 104.80947 18.719366 6741.7037 95776629. 0.043048613 0.067765744 104.85184 18.612008 6743.8083 91784255. 0.038781770 0.076500223 104.89726 18.504650 6745.9129 90501004. 0.037566280 0.078950655 104.94268 18.397293 6748.0175 88090774. 0.033625063 0.067108781 104.98464 18.289935 6750.1220 81255050. 0.031153113 0.072212530 105.02593 18.182578 6752.2266 79220296. 0.028576691 0.073872226 105.06723 18.075221 6754.3312 77685781. 0.027491489 0.075680847 105.10852 17.967863 6756.4358 76374061. 0.025082757 0.075288260 105.14981 17.860505 6758.5404 74291343. 0.025371056 0.074848009 105.19110 17.753147 6760.6450 69471606. 0.025957434 0.077291166 105.23239 17.645788 6762.7495 62096455. 0.030919306 0.076841786 105.27605 17.538430 6764.8541 56106737. 0.033627007 0.079524204 105.32147 17.431072 6766.9587 52658489. 0.033808222 0.081882336 105.36627 17.324338 6769.0633 52271019. 0.029120754 0.084607737 105.40756 17.221094 6771.1679 52224919. 0.025270167 0.089712272 105.44886 17.117850 6773.2724 50295227. 0.020890102 0.094816807 105.49015 17.011602 6775.3770 45513083. 0.013510415 0.099921342 105.53144 16.904244 6777.4816 44805805. 0.012466881 0.10502588 105.57273 16.796886 6779.5862 47059550. 0.014669395 0.11013041 105.61403 16.689527