# # 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 = 40.890855 km # Date (UTC) = 2017-01-08T09:51:22.975 # Date (julian) = 2457761.91068258 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6520.9898 3.5467426e+10 0.16348313 0.038612641 108.56048 33.623124 6522.5767 3.2763892e+10 0.16990692 0.039068267 108.60718 33.537917 6524.1636 3.0172275e+10 0.17336303 0.039485066 108.65389 33.450743 6525.7504 2.7700351e+10 0.17600077 0.039696571 108.70059 33.363568 6527.3373 2.5457901e+10 0.17951454 0.040961338 108.74680 33.276880 6528.9241 2.3358966e+10 0.18067434 0.042175602 108.79039 33.192818 6530.5110 2.1504245e+10 0.18258574 0.044544080 108.83398 33.108756 6532.0979 1.9845517e+10 0.18436973 0.046765937 108.87756 33.024694 6533.6847 1.8318568e+10 0.18412303 0.047810569 108.92115 32.937694 6535.2716 1.6885290e+10 0.18391057 0.048106490 108.96474 32.850519 6536.8584 1.5560288e+10 0.18315040 0.048558560 109.00832 32.763345 6538.4453 1.4371431e+10 0.18215622 0.049373513 109.05040 32.685283 6540.0321 1.3366159e+10 0.18172514 0.050869289 109.09191 32.610552 6541.6190 1.2587977e+10 0.17910028 0.051125791 109.13343 32.535822 6543.2059 1.1876317e+10 0.17704861 0.051435923 109.17519 32.459979 6544.7927 1.1158015e+10 0.17524797 0.052287420 109.21878 32.375918 6546.3796 1.0403303e+10 0.17240798 0.052776861 109.26237 32.291856 6547.9664 9.6899155e+09 0.17038247 0.053654884 109.30596 32.207795 6549.5533 9.0557638e+09 0.16797450 0.054530136 109.34954 32.120908 6551.1402 8.4892019e+09 0.16532562 0.055284949 109.39313 32.033733 6552.7270 7.9530992e+09 0.16372461 0.055403777 109.43672 31.946558 6554.3139 7.4489579e+09 0.16144398 0.054838967 109.48031 31.861548 6555.9007 6.9672204e+09 0.15919623 0.054096533 109.52389 31.777486 6557.4876 6.5132269e+09 0.15762862 0.053560483 109.56748 31.693425 6559.0745 6.1148573e+09 0.15499391 0.052378778 109.60739 31.613879 6560.6613 5.7769325e+09 0.15263212 0.051678053 109.64337 31.539159 6562.2482 5.5152865e+09 0.15031901 0.050643761 109.67934 31.464438 6563.8350 5.2709027e+09 0.14737740 0.048962432 109.71532 31.389718 6565.4219 5.0237377e+09 0.14532759 0.047839340 109.75792 31.304163 6567.0087 4.7769794e+09 0.14332865 0.046609793 109.80151 31.216989 6568.5956 4.5131385e+09 0.14118723 0.045224161 109.84509 31.129815 6570.1825 4.2734847e+09 0.13970433 0.044841927 109.88868 31.044689 6571.7693 4.0475889e+09 0.13771419 0.044293159 109.93227 30.960627 6573.3562 3.8394283e+09 0.13543564 0.043371656 109.97586 30.876565 6574.9430 3.6395655e+09 0.13340210 0.042402066 110.01806 30.792498 6576.5299 3.4393601e+09 0.13084132 0.040761471 110.05854 30.708424 6578.1168 3.2404116e+09 0.12843426 0.038465244 110.09901 30.624350 6579.7036 3.0599760e+09 0.12595203 0.036683689 110.13844 30.542470 6581.2905 2.8992107e+09 0.12334643 0.035508650 110.17442 30.467750 6582.8773 2.7686922e+09 0.12122868 0.035055048 110.21039 30.393031 6584.4642 2.6593525e+09 0.11876990 0.034262649 110.24637 30.318311 6586.0510 2.5534713e+09 0.11646424 0.033170636 110.28514 30.237789 6587.6379 2.4521300e+09 0.11505408 0.033299705 110.32561 30.153727 6589.2248 2.3344961e+09 0.11333885 0.032600061 110.36609 30.069665 6590.8116 2.2223894e+09 0.11142443 0.029552317 110.40656 29.984330 6592.3985 2.1098315e+09 0.10979912 0.027686477 110.44703 29.897155 6593.9853 1.9997723e+09 0.10792093 0.026186151 110.48751 29.809980 6595.5722 1.9044070e+09 0.10590393 0.025682910 110.52798 29.723419 6597.1591 1.8021539e+09 0.10418545 0.025672534 110.56846 29.639357 6598.7459 1.7009133e+09 0.10272180 0.025051038 110.60893 29.555295 6600.3328 1.6078467e+09 0.10264229 0.025674004 110.64940 29.471248 6601.9196 1.5263803e+09 0.10213744 0.027478786 110.68545 29.396377 6603.5065 1.4741904e+09 0.10081881 0.026363430 110.72142 29.321657 6605.0934 1.4291472e+09 0.10021089 0.026743359 110.75740 29.246938 6606.6802 1.3824251e+09 0.099064607 0.026281644 110.79505 29.168745 6608.2671 1.3285480e+09 0.096888578 0.023725310 110.83552 29.084683 6609.8539 1.2659276e+09 0.094600531 0.023959589 110.87600 29.000621 6611.4408 1.2046302e+09 0.092373293 0.024677363 110.91648 28.916557 6613.0276 1.1490220e+09 0.091588203 0.023583734 110.95696 28.832483 6614.6145 1.0994026e+09 0.090487593 0.023517122 110.99743 28.748409 6616.2014 1.0447425e+09 0.089130607 0.023313903 111.03791 28.664335 6617.7882 9.9563348e+08 0.088565412 0.023700582 111.07544 28.580273 6619.3751 9.5152334e+08 0.087850590 0.024616415 111.11280 28.496211 6620.9619 9.1075379e+08 0.087185344 0.025077182 111.15016 28.412150 6622.5488 8.7216435e+08 0.086287189 0.024611921 111.18650 28.334968 6624.1357 8.3753861e+08 0.085059531 0.024934927 111.22248 28.260249 6625.7225 8.0807176e+08 0.084548418 0.026259783 111.25845 28.185529 6627.3094 7.8235239e+08 0.083121204 0.025436317 111.29460 28.109660 6628.8962 7.5946642e+08 0.082457741 0.026066975 111.33196 28.025598 6630.4831 7.2974494e+08 0.081514320 0.025929492 111.36932 27.941537 6632.0700 6.9710774e+08 0.080512371 0.026040733 111.40668 27.857475 6633.6568 6.6745247e+08 0.079644098 0.026266925 111.44404 27.773414 6635.2437 6.3919337e+08 0.078825639 0.026436329 111.48140 27.689352 6636.8305 6.1463543e+08 0.077826863 0.026227225 111.51876 27.605291 6638.4174 5.8768996e+08 0.077247101 0.025653458 111.55830 27.521229 6640.0042 5.5823711e+08 0.077564803 0.025270133 111.59877 27.437167 6641.5911 5.3180769e+08 0.077811098 0.025150308 111.63925 27.353105 6643.1780 5.1370391e+08 0.077405781 0.025219488 111.67821 27.269043 6644.7648 4.9682373e+08 0.076691369 0.025426267 111.71556 27.184983 6646.3517 4.7714313e+08 0.075858857 0.026102188 111.75292 27.100922 6647.9385 4.5583917e+08 0.075245777 0.026931925 111.79029 27.016857 6649.5254 4.2832496e+08 0.074611080 0.026909454 111.82765 26.932783 6651.1123 4.0528943e+08 0.074356910 0.026570193 111.86502 26.848709 6652.6991 3.8337012e+08 0.074178513 0.027442876 111.90212 26.765408 6654.2860 3.6125514e+08 0.073559772 0.027914398 111.93533 26.693456 6655.8728 3.4513997e+08 0.072322904 0.027970872 111.96854 26.621503 6657.4597 3.3025471e+08 0.071351694 0.029434337 112.00174 26.549550 6659.0465 3.1780961e+08 0.070319004 0.031824888 112.03542 26.472145 6660.6334 3.1319551e+08 0.069585280 0.032201735 112.06967 26.388083 6662.2203 2.9964039e+08 0.068797577 0.032920689 112.10391 26.304022 6663.8071 2.8861734e+08 0.067960753 0.032259539 112.13890 26.219960 6665.3940 2.7850407e+08 0.068193843 0.027901574 112.17627 26.135898 6666.9808 2.6640000e+08 0.068054991 0.027099724 112.21363 26.051836 6668.5677 2.5768943e+08 0.067347313 0.027973149 112.25099 25.967774 6670.1546 2.4337010e+08 0.067463508 0.027257028 112.28835 25.883713 6671.7414 2.3087705e+08 0.067463126 0.026875914 112.32571 25.799652 6673.3283 2.2202723e+08 0.067223451 0.027950180 112.36307 25.715591 6674.9151 2.1420406e+08 0.066204220 0.029726768 112.39790 25.631530 6676.5020 2.0752321e+08 0.064578389 0.032037257 112.43215 25.547468 6678.0889 1.9895351e+08 0.064195056 0.030877185 112.46639 25.463407 6679.6757 1.9014152e+08 0.064351802 0.029709393 112.50252 25.381222 6681.2626 1.8187388e+08 0.065184529 0.029858798 112.53987 25.300274 6682.8494 1.7224542e+08 0.065845397 0.031073539 112.57723 25.219325 6684.4363 1.6340988e+08 0.065962040 0.032676232 112.61338 25.137161 6686.0231 1.5651519e+08 0.065649785 0.033774551 112.64763 25.053099 6687.6100 1.5120175e+08 0.063996584 0.034002694 112.68187 24.969037 6689.1969 1.4617269e+08 0.062112169 0.033838815 112.71668 24.884973 6690.7837 1.4535173e+08 0.061612065 0.033026048 112.75404 24.800899 6692.3706 1.4182035e+08 0.061129427 0.032334995 112.79141 24.716825 6693.9574 1.3830715e+08 0.060581742 0.031275628 112.82878 24.632750 6695.5443 1.3578284e+08 0.060808261 0.029759493 112.86313 24.551701 6697.1312 1.3014822e+08 0.060630430 0.030107863 112.89738 24.470753 6698.7180 1.2643906e+08 0.059966830 0.031203377 112.93162 24.389806 6700.3049 1.1986318e+08 0.059091274 0.030893853 112.96587 24.306506 6701.8917 1.1529201e+08 0.058121008 0.032717872 113.00012 24.222445 6703.4786 1.0772750e+08 0.058806579 0.034872825 113.03437 24.138383 6705.0655 1.0297688e+08 0.059281446 0.036784965 113.06861 24.056013 6706.6523 99899018. 0.059278127 0.039581698 113.10286 23.975065 6708.2392 95878419. 0.059339292 0.040304024 113.13711 23.894117 6709.8260 98195467. 0.058574355 0.040607150 113.17135 23.812137 6711.4129 97947676. 0.057239265 0.041161983 113.20560 23.728075 6712.9997 92008278. 0.056229715 0.043686150 113.23985 23.644013 6714.5866 84329355. 0.055133019 0.047347509 113.27409 23.560323 6716.1735 75911865. 0.054405402 0.048656853 113.30834 23.479375 6717.7603 71931733. 0.053292444 0.049827239 113.34259 23.398427 6719.3472 78281157. 0.051625880 0.051039993 113.37683 23.317479 6720.9340 77784427. 0.052229668 0.050311542 113.41108 23.233706 6722.5209 69114716. 0.052368380 0.049961241 113.44533 23.149645 6724.1078 59264556. 0.051489674 0.049026836 113.47958 23.065584 6725.6946 55815336. 0.048861972 0.041142128 113.51382 22.983689 6727.2815 55587964. 0.048167925 0.040585384 113.54807 22.902740 6728.8683 63180967. 0.047488253 0.040858810 113.58232 22.821792 6730.4552 66992147. 0.046105355 0.041003023 113.61893 22.733528 6732.0420 66443836. 0.045169787 0.043747950 113.65807 22.637455 6733.6289 66004425. 0.044802832 0.047338828 113.69721 22.541382 6735.2158 56197856. 0.046795669 0.049522484 113.73096 22.455493 6736.8026 50041590. 0.049334233 0.053389376 113.76210 22.374545 6738.3895 46086651. 0.051380433 0.059465376 113.79323 22.293597 6739.9763 45214255. 0.052281063 0.064021409 113.82580 22.211207 6741.5632 43246433. 0.052941605 0.067364972 113.86005 22.127133 6743.1501 45693897. 0.051590719 0.072059737 113.89431 22.043059 6744.7369 44224579. 0.061500548 0.078363399 113.92778 21.959766 6746.3238 45192566. 0.049269722 0.075223011 113.95891 21.878818 6749.4975 44006067. 0.021799430 0.072141719 114.02130 21.716922