# # 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 = 47.368884 km # Date (UTC) = 2011-12-20T08:16:55.154 # Date (julian) = 2455915.84508280 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.4086 2.7633316e+11 0.034588629 0.030898690 -8.9114208 45.890194 6497.5009 2.3368155e+11 0.041772927 0.031529605 -8.9953519 45.798964 6499.5931 1.9808928e+11 0.048835224 0.032160520 -9.0792854 45.707732 6501.6854 1.6773317e+11 0.055846325 0.032791435 -9.1634635 45.616063 6503.7777 1.3987432e+11 0.062821320 0.033422350 -9.2537732 45.513438 6505.8699 1.1559501e+11 0.069753803 0.034053265 -9.3440828 45.410814 6507.9622 9.6357782e+10 0.076767668 0.034684180 -9.4305454 45.315058 6510.0544 8.2076322e+10 0.084159897 0.035315095 -9.5144676 45.223838 6512.1467 7.1776262e+10 0.092258869 0.035946010 -9.5983899 45.132618 6514.2389 6.3599726e+10 0.10110507 0.036576924 -9.6791685 45.038255 6516.3312 5.6664144e+10 0.11073392 0.037207839 -9.7594424 44.943386 6518.4235 5.0824307e+10 0.12120163 0.037838754 -9.8397162 44.848959 6520.5157 4.5920361e+10 0.13258760 0.038469669 -9.9199899 44.757739 6522.6080 4.1695378e+10 0.14317605 0.039076456 -10.000264 44.666519 6524.7002 3.7957681e+10 0.15071005 0.039675721 -10.079153 44.575295 6526.7925 3.4600689e+10 0.15717877 0.040498921 -10.155788 44.484063 6528.8847 3.1707352e+10 0.16276486 0.042144356 -10.232423 44.392831 6530.9770 2.9083330e+10 0.16799415 0.045196490 -10.317812 44.294306 6533.0693 2.6544717e+10 0.17301752 0.047549023 -10.408121 44.191681 6535.1615 2.4169486e+10 0.17448887 0.048154228 -10.495637 44.091384 6537.2538 2.2054914e+10 0.17412905 0.048804873 -10.572262 44.000164 6539.3460 2.0336405e+10 0.17279008 0.050062502 -10.648887 43.908944 6541.4383 1.8931546e+10 0.17092060 0.051184392 -10.725512 43.816033 6543.5306 1.7655740e+10 0.16905274 0.051521140 -10.802137 43.721163 6545.6228 1.6475543e+10 0.16734546 0.052461147 -10.878762 43.626293 6547.7151 1.5374417e+10 0.16617077 0.053559294 -10.955394 43.534053 6549.8073 1.4368488e+10 0.16497688 0.054789016 -11.032029 43.442820 6551.8996 1.3456201e+10 0.16369171 0.055551521 -11.108664 43.351588 6553.9918 1.2637561e+10 0.16175692 0.054836478 -11.181704 43.260368 6556.0841 1.1940918e+10 0.16012555 0.054000760 -11.254681 43.169148 6558.1764 1.1269916e+10 0.15877705 0.053089020 -11.329865 43.075168 6560.2686 1.0561468e+10 0.15679909 0.052032111 -11.411964 42.972544 6562.3609 9.8328510e+09 0.15467687 0.050536511 -11.494063 42.869920 6564.4531 9.1264999e+09 0.15249885 0.048566234 -11.568810 42.773546 6566.5454 8.5311286e+09 0.15073805 0.046874354 -11.641786 42.678677 6568.6377 8.0409499e+09 0.14908466 0.045185504 -11.714763 42.584047 6570.7299 7.5961308e+09 0.14766476 0.044615154 -11.787738 42.492827 6572.8222 7.2014305e+09 0.14588984 0.043759319 -11.860714 42.401607 6574.9144 6.8295109e+09 0.14359917 0.042415806 -11.933693 42.310383 6577.0067 6.4866343e+09 0.14075734 0.040209865 -12.006679 42.219151 6579.0989 6.1759262e+09 0.13732540 0.037016102 -12.079665 42.127918 6581.1912 5.8456005e+09 0.13471994 0.035538709 -12.155578 42.030029 6583.2835 5.4907154e+09 0.13289855 0.034878190 -12.233573 41.927405 6585.3757 5.1364932e+09 0.13125658 0.033670392 -12.310282 41.826472 6587.4680 4.8105740e+09 0.12989249 0.033262056 -12.379609 41.735251 6589.5602 4.5370315e+09 0.12823633 0.031934514 -12.448936 41.644031 6591.6525 4.3035623e+09 0.12602752 0.028465643 -12.518264 41.551324 6593.7448 4.0864143e+09 0.12394720 0.026409824 -12.587591 41.456456 6595.8370 3.8814314e+09 0.12141793 0.025710372 -12.656918 41.361587 6597.9293 3.6979909e+09 0.11951842 0.025429484 -12.726252 41.269145 6600.0215 3.5334498e+09 0.11864265 0.025034137 -12.795588 41.177912 6602.1138 3.3632114e+09 0.11792351 0.027419531 -12.864925 41.086680 6604.2060 3.1925365e+09 0.11637906 0.026193620 -12.938481 40.984890 6606.2983 3.0041021e+09 0.11576718 0.026967919 -13.012370 40.882265 6608.3906 2.8272619e+09 0.11316847 0.023722045 -13.084021 40.785237 6610.4828 2.6725785e+09 0.11003519 0.024464303 -13.153348 40.694017 6612.5751 2.5412220e+09 0.10805257 0.023891074 -13.222676 40.602797 6614.6673 2.4219894e+09 0.10653610 0.023480723 -13.289266 40.508839 6616.7596 2.3170997e+09 0.10458976 0.023401518 -13.354944 40.413970 6618.8519 2.2223957e+09 0.10329354 0.024414047 -13.420701 40.319027 6620.9441 2.1102580e+09 0.10198096 0.025071437 -13.494590 40.216402 6623.0364 1.9928524e+09 0.10000959 0.024505301 -13.568480 40.113778 6625.1286 1.8754413e+09 0.098164790 0.025551097 -13.637666 40.017686 6627.2209 1.7726507e+09 0.095861653 0.025402136 -13.703353 39.926454 6629.3131 1.6913065e+09 0.094662628 0.026052487 -13.769040 39.835221 6631.4054 1.6202318e+09 0.093057488 0.025971947 -13.834720 39.743999 6633.4977 1.5522656e+09 0.091841625 0.026239140 -13.900399 39.652779 6635.5899 1.4853304e+09 0.090489755 0.026488255 -13.966457 39.560504 6637.6822 1.4151159e+09 0.089424991 0.025827302 -14.036241 39.457880 6639.7744 1.3356964e+09 0.089191467 0.025351273 -14.106026 39.355256 6641.8667 1.2597118e+09 0.089513252 0.025151243 -14.170720 39.260118 6643.9590 1.1909131e+09 0.088589840 0.025337409 -14.232750 39.168897 6646.0512 1.1325854e+09 0.087623713 0.025946656 -14.294780 39.077677 6648.1435 1.0871146e+09 0.086547242 0.027060324 -14.360151 38.983116 6650.2357 1.0445601e+09 0.085713035 0.026309202 -14.425829 38.888247 6652.3280 1.0043159e+09 0.085009853 0.027340763 -14.492229 38.792018 6654.4202 9.5462116e+08 0.084025044 0.027857198 -14.562023 38.689378 6656.5125 9.0532653e+08 0.082090192 0.028473238 -14.631818 38.586738 6658.6048 8.5747046e+08 0.080480410 0.031133635 -14.693173 38.492544 6660.6970 8.2083274e+08 0.078929898 0.032259554 -14.751554 38.401324 6662.7893 7.8736461e+08 0.077462333 0.032601440 -14.809935 38.310104 6664.8815 7.4821133e+08 0.076532421 0.028980586 -14.879707 38.207492 6666.9738 7.0906860e+08 0.075971929 0.027098351 -14.949491 38.104867 6669.0661 6.6879925e+08 0.074555196 0.028287862 -15.014911 38.008661 6671.1583 6.3916767e+08 0.074430882 0.026867604 -15.076941 37.917441 6673.2506 6.1441915e+08 0.073814835 0.027833961 -15.138970 37.826221 6675.3428 5.8967565e+08 0.072060639 0.030454996 -15.204001 37.725625 6677.4351 5.6018626e+08 0.070497724 0.031739699 -15.269681 37.623000 6679.5273 5.2930220e+08 0.070458446 0.029831998 -15.332542 37.524780 6681.6196 5.0129444e+08 0.071472851 0.030132707 -15.390923 37.433560 6683.7119 4.8175698e+08 0.071870370 0.032231819 -15.449304 37.342340 6685.8041 4.6385341e+08 0.071486729 0.033554185 -15.512402 37.243748 6687.8964 4.4439040e+08 0.069301398 0.033842982 -15.578092 37.141108 6689.9886 4.2444897e+08 0.067404738 0.033126094 -15.643780 37.038471 6692.0809 4.0236428e+08 0.066444120 0.032671393 -15.709459 36.935847 6694.1732 3.8207342e+08 0.065634208 0.031018346 -15.775138 36.833223 6696.2654 3.6426289e+08 0.065506523 0.029786058 -15.835171 36.736598 6698.3577 3.4558110e+08 0.064617701 0.030708757 -15.893551 36.641729 6700.4499 3.3305265e+08 0.062953790 0.031001441 -15.952038 36.546603 6702.5422 3.2027041e+08 0.061960162 0.033309667 -16.013613 36.443978 6704.6344 3.0733316e+08 0.062198627 0.036489098 -16.075187 36.341354 6706.7267 2.9527253e+08 0.061923602 0.039711170 -16.139213 36.238730 6708.8190 2.7803585e+08 0.061443511 0.040935396 -16.204893 36.136105 6710.9112 2.6529974e+08 0.059854843 0.040674854 -16.268810 36.035316 6713.0035 2.5457527e+08 0.057907493 0.043699194 -16.323542 35.944096 6715.0957 2.4748878e+08 0.055894014 0.047476502 -16.378274 35.852876 6717.1880 2.3780616e+08 0.053857345 0.049862640 -16.435886 35.756856 6719.2803 2.2845893e+08 0.051861534 0.051103581 -16.497469 35.654216 6721.3725 2.1843052e+08 0.052291284 0.050416137 -16.559053 35.551577 6723.4648 2.0743951e+08 0.050994213 0.049628152 -16.620628 35.448952 6725.5570 2.0130639e+08 0.047090830 0.041228073 -16.682202 35.346328 6727.6493 1.8920327e+08 0.046204945 0.040095355 -16.743777 35.243704 6729.7415 1.7961077e+08 0.045374087 0.040551171 -16.805352 35.141080 6731.8338 1.7213327e+08 0.043805628 0.043409440 -16.866157 35.039738 6733.9261 1.6515479e+08 0.042870012 0.048952146 -16.920889 34.948518 6736.0183 1.6144176e+08 0.044554967 0.050424251 -16.975622 34.857297 6738.1106 1.5515319e+08 0.045837258 0.057929853 -17.032898 34.761836 6740.2028 1.5050884e+08 0.045564689 0.064396866 -17.094472 34.659212 6742.2951 1.4468432e+08 0.043150781 0.069329795 -17.156047 34.556588 6744.3873 1.4145241e+08 0.038996944 0.078093017 -17.213780 34.457806 6746.4796 1.3674185e+08 0.036299066 0.073411307 -17.271249 34.359287 6748.5719 1.3053636e+08 0.034331578 0.070025504 -17.330770 34.258717 6750.6641 1.2472033e+08 0.031618011 0.073138149 -17.392345 34.156093 6752.7564 1.2013961e+08 0.028936046 0.073259201 -17.453659 34.053469 6754.8486 1.1223117e+08 0.027430437 0.074848751 -17.511129 33.950844 6756.9409 1.0706028e+08 0.024810733 0.076587980 -17.568598 33.848219 6759.0332 1.0403173e+08 0.025818907 0.075827956 -17.626073 33.745585 6761.1254 98757680. 0.026602386 0.077978587 -17.683551 33.642946 6763.2177 98400806. 0.031651927 0.077100693 -17.741027 33.540309 6765.3099 92008138. 0.033940768 0.079587772 -17.798497 33.437685 6767.4022 86523412. 0.032924170 0.081525417 -17.855968 33.335061 6769.4944 82567127. 0.028413960 0.085653515 -17.913437 33.232436 6771.5867 77517376. 0.024758557 0.090728161 -17.970906 33.129812 6773.6790 77117274. 0.021084478 0.095802807 -18.031001 33.022500 6775.7712 74782270. 0.017407006 0.10087745 -18.096682 32.905212 6777.8635 70597014. 0.013718453 0.10595210 -18.160817 32.790685 6779.9557 66058617. 0.0099982127 0.11102675 -18.218287 32.688060 6782.0480 63092211. 0.0062098154 0.11610139 -18.275758 32.585435 6784.1403 64143736. 0.0023373871 0.12117604 -18.333227 32.485898 6786.2325 63779945. -0.0021338543 0.12625068 -18.390697 32.387378 6788.3248 60183758. -0.010496007 0.13132533 -18.446868 32.287561 6790.4170 57156941. -0.010394120 0.13639998 -18.500233 32.184937 6792.5093 55691537. -0.0054993279 0.14147462 -18.553597 32.082312