# # 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 = 62.655941 km # Date (UTC) = 2014-12-02T09:19:08.937 # Date (julian) = 2456993.88829789 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.1793 1.6355431e+11 0.040181903 0.031432637 116.15579 27.483167 6499.9080 1.2462783e+11 0.050210066 0.032255479 116.22003 27.333262 6502.6368 9.7116202e+10 0.059920084 0.033078322 116.28227 27.197417 6505.3655 7.9332236e+10 0.069489941 0.033901164 116.34414 27.064154 6508.0942 6.6404267e+10 0.079117373 0.034724007 116.40778 26.918514 6510.8230 5.6132739e+10 0.088938251 0.035546849 116.47203 26.768609 6513.5517 4.8212887e+10 0.099213786 0.036369692 116.53002 26.633294 6516.2804 4.2268769e+10 0.11022347 0.037192535 116.58712 26.500048 6519.0092 3.7460400e+10 0.12204986 0.038015377 116.65390 26.353901 6521.7379 3.3353439e+10 0.13470974 0.038838220 116.72350 26.203997 6524.4666 2.9823597e+10 0.14162307 0.039592739 116.78177 26.073510 6527.1954 2.6960479e+10 0.14760454 0.040858320 116.83888 25.945022 6529.9241 2.4446034e+10 0.15282869 0.043707821 116.90173 25.799288 6532.6529 2.2031493e+10 0.15707077 0.047229580 116.96598 25.649383 6535.3816 1.9908581e+10 0.15980762 0.048058766 117.02354 25.515079 6538.1103 1.8097727e+10 0.16284372 0.049210401 117.08065 25.381815 6540.8391 1.6520146e+10 0.16499455 0.051250493 117.13925 25.234635 6543.5678 1.5060708e+10 0.16600570 0.051530912 117.19814 25.084730 6546.2965 1.3748909e+10 0.16590206 0.052708516 117.25530 24.950958 6549.0253 1.2611645e+10 0.16488164 0.053992019 117.31241 24.817712 6551.7540 1.1517920e+10 0.16358485 0.055500413 117.37571 24.674664 6554.4827 1.0454004e+10 0.16109944 0.054842510 117.43993 24.530134 6557.2115 9.4660740e+09 0.15877800 0.053733564 117.49231 24.396859 6559.9402 8.6547202e+09 0.15609489 0.052281060 117.54466 24.263613 6562.6689 8.0206065e+09 0.15300529 0.050243394 117.60128 24.134623 6565.3977 7.4662885e+09 0.15042374 0.047866847 117.65839 24.006119 6568.1264 6.9228425e+09 0.14864810 0.045655474 117.71692 23.860564 6570.8551 6.4066514e+09 0.14717532 0.044563285 117.77581 23.710661 6573.5839 5.9377258e+09 0.14547212 0.043188944 117.83304 23.576230 6576.3126 5.5436326e+09 0.14342765 0.041011586 117.89015 23.442983 6579.0413 5.1959692e+09 0.14077907 0.037047775 117.94873 23.300382 6581.7701 4.8546067e+09 0.13880254 0.035363422 118.00763 23.155831 6584.4988 4.5523825e+09 0.13672049 0.034243795 118.06024 23.022130 6587.2275 4.2841420e+09 0.13469908 0.033208783 118.11258 22.888884 6589.9563 4.0366601e+09 0.13244895 0.031148824 118.17055 22.745935 6592.6850 3.7902152e+09 0.12945022 0.027408178 118.22943 22.601399 6595.4137 3.5559098e+09 0.12619176 0.025666477 118.28185 22.472727 6598.1425 3.3555408e+09 0.12311003 0.025339144 118.33420 22.344222 6600.8712 3.1520336e+09 0.12191620 0.026780915 118.39237 22.196686 6603.5999 2.9550112e+09 0.11984644 0.026308110 118.45112 22.047240 6606.3287 2.7768953e+09 0.11846868 0.026913344 118.50347 21.918754 6609.0574 2.6221928e+09 0.11477000 0.023722985 118.55581 21.790268 6611.7861 2.4779236e+09 0.11183197 0.024457128 118.61418 21.647000 6614.5149 2.3311411e+09 0.11118115 0.023585761 118.67273 21.503039 6617.2436 2.1975788e+09 0.11020705 0.023520018 118.72508 21.369793 6619.9723 2.0792327e+09 0.10999411 0.024760525 118.77743 21.236547 6622.7011 1.9727180e+09 0.10876539 0.024571388 118.83091 21.092531 6625.4298 1.8650407e+09 0.10737537 0.025910503 118.88436 20.949298 6628.1585 1.7695148e+09 0.10561374 0.025767468 118.93670 20.820811 6630.8873 1.6869434e+09 0.10380653 0.025930488 118.98905 20.692325 6633.6160 1.6083716e+09 0.10215339 0.026259803 119.04782 20.548065 6636.3448 1.5248397e+09 0.10042516 0.026415871 119.10610 20.403514 6639.0735 1.4361284e+09 0.099242614 0.025601809 119.15964 20.258962 6641.8022 1.3538170e+09 0.099931425 0.025151024 119.21288 20.117194 6644.5310 1.2879236e+09 0.098712790 0.025400991 119.26523 19.983949 6647.2597 1.2312449e+09 0.097165376 0.026574507 119.31775 19.849066 6649.9884 1.1758695e+09 0.095935412 0.026271195 119.37129 19.704516 6652.7172 1.1171356e+09 0.095064648 0.027447840 119.42319 19.564409 6655.4459 1.0604336e+09 0.093146066 0.027794460 119.47078 19.435905 6658.1746 1.0135780e+09 0.090722139 0.030370782 119.51942 19.304578 6660.9034 9.6667371e+08 0.088433008 0.032447108 119.57295 19.160028 6663.6321 9.1960839e+08 0.086317981 0.032308044 119.62814 19.015477 6666.3608 8.7031382e+08 0.085679956 0.026978907 119.68703 18.870926 6669.0896 8.2555976e+08 0.084067762 0.028263715 119.74095 18.733446 6671.8183 7.9248236e+08 0.083922172 0.026877010 119.78853 18.604959 6674.5470 7.5805422e+08 0.082717157 0.029416248 119.83814 18.472843 6677.2758 7.2400577e+08 0.080309650 0.031966188 119.89167 18.333646 6680.0045 6.8692257e+08 0.080507435 0.029442388 119.94521 18.191928 6682.7332 6.4661551e+08 0.081520551 0.030984762 119.99875 18.047378 6685.4620 6.1580107e+08 0.081279772 0.033192790 120.04870 17.912503 6688.1907 5.8960318e+08 0.078457464 0.033829211 120.09630 17.783998 6690.9194 5.6562542e+08 0.076381973 0.033010495 120.14688 17.647439 6693.6482 5.4165365e+08 0.075113095 0.031381726 120.20041 17.502889 6696.3769 5.1800288e+08 0.074619679 0.029832382 120.25395 17.358339 6699.1056 4.9139975e+08 0.073092874 0.031492957 120.30749 17.213788 6701.8344 4.6520758e+08 0.070924079 0.032633709 120.35692 17.073340 6704.5631 4.4266119e+08 0.071186129 0.036454069 120.40511 16.934143 6707.2918 4.2388889e+08 0.070732917 0.040145020 120.45276 16.804567 6710.0206 4.1153614e+08 0.069367962 0.040500522 120.50034 16.676079 6712.7493 3.9744656e+08 0.066583125 0.043221178 120.55267 16.534789 6715.4780 3.7909410e+08 0.063951973 0.047867519 120.60621 16.390238 6718.2068 3.5983696e+08 0.061160967 0.050134456 120.65477 16.250663 6720.9355 3.4029743e+08 0.060477666 0.050311371 120.70328 16.111137 6723.6642 3.2586641e+08 0.058573595 0.049739406 120.75683 15.966565 6726.3930 3.1159713e+08 0.053975663 0.040954912 120.81037 15.821997 6729.1217 2.9741788e+08 0.053107526 0.040964301 120.86391 15.677446 6731.8505 2.8544101e+08 0.050806768 0.043442577 120.91570 15.534640 6734.5792 2.7237210e+08 0.050230693 0.049318752 120.96388 15.395442 6737.3079 2.6201333e+08 0.052341142 0.055116447 121.01452 15.253793 6740.0367 2.4757460e+08 0.052624127 0.064112977 121.06805 15.109243 6742.7654 2.3458156e+08 0.049143367 0.070475761 121.11843 14.967852 6745.4941 2.2309331e+08 0.045438293 0.078774611 121.16662 14.828655 6748.2229 2.1400975e+08 0.041229945 0.068189350 121.21480 14.689458 6750.9516 2.0848692e+08 0.038304768 0.073629009 121.26298 14.550261 6753.6803 1.9890861e+08 0.035132296 0.075178942 121.31574 14.406490 6756.4091 1.8978402e+08 0.032085748 0.075219476 121.36928 14.261942 6759.1378 1.8023308e+08 0.032417183 0.075853206 121.41754 14.122671 6761.8665 1.7005107e+08 0.035794273 0.078039817 121.46572 13.983473 6764.5953 1.6237234e+08 0.039744374 0.079511803 121.51391 13.844276 6767.3240 1.5850674e+08 0.039301673 0.081612975 121.56209 13.703731 6770.0527 1.5403797e+08 0.033426106 0.087007592 121.61028 13.559159 6772.7815 1.4991435e+08 0.028405436 0.093625973 121.66052 13.416647 6775.5102 1.4195203e+08 0.023456232 0.10024435 121.71406 13.277451 6778.2389 1.3135181e+08 0.018562482 0.10686273 121.76838 13.128002 6780.9677 1.2488110e+08 0.013609161 0.11348111 121.82345 12.968917 6783.6964 1.2234181e+08 0.0085880112 0.12009949 121.87245 12.827354 6786.4251 1.2155331e+08 0.0035610546 0.12671787 121.92064 12.688086 6789.1539 1.2170540e+08 -0.0014385546 0.13333625 121.96882 12.543536 6791.8826 1.1569410e+08 -0.0063087590 0.13995463 122.01801 12.396872 6794.6113 1.1208808e+08 -0.011174853 0.14657301 122.07307 12.237787 6797.3401 1.0398022e+08 -0.015961163 0.15319139 122.12462 12.088865 6800.0688 98801695. -0.020784521 0.15980977 122.17281 11.949668 6802.7975 96444551. -0.025640447 0.16642815 122.22099 11.810471 6805.5263 94625659. -0.030508420 0.17304654 122.26917 11.671274 6808.2550 96530162. -0.035412788 0.17966492 122.31795 11.516657 6810.9837 92464947. -0.040256397 0.18628330 122.36679 11.360375 6813.7125 85586501. -0.045064656 0.19290168 122.41498 11.221178 6816.4412 76608988. -0.049844644 0.19952006 122.46504 11.076549 6819.1699 72929534. -0.054677244 0.20613844 122.52011 10.917464 6821.8987 72322350. -0.059540243 0.21275682 122.57518 10.758379 6824.6274 71981394. -0.064397982 0.21937520 122.63021 10.599382 6827.3561 71234282. -0.069254876 0.22599358 122.67840 10.460185 6830.0849 64957572. -0.074069264 0.23261196 122.72669 10.318270 6832.8136 60572793. -0.078897006 0.23923034 122.77564 10.159185 6835.5424 58238608. -0.083737718 0.24584872 122.82766 10.003172 6838.2711 55956224. -0.088585552 0.25246710 122.88273 9.8502057 6840.9998 58195967. -0.093450593 0.25908548 122.93182 9.7091899 6843.7286 56467075. -0.098321799 0.26570386 122.98001 9.5699318 6846.4573 51382684. -0.10321894 0.27232224 123.02895 9.4109072 6849.1860 48609725. -0.10814972 0.27894062 123.08014 9.2518217 6851.9148 46242221. -0.11298846 0.28555900 123.13521 9.0927350 6854.6435 47490662. -0.11851310 0.29217738 123.19028 8.9381244 6857.3722 45167894. -0.12708024 0.29879576 123.24475 8.7845639 6860.1010 42890333. -0.12949570 0.30541414 123.29370 8.6254784 6865.5584 40438208. -0.13213140 0.31865090 123.40055 8.3073074