# # 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 = 43.930555 km # Date (UTC) = 2016-01-04T09:01:43.741 # Date (julian) = 2457391.87620071 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.4902 6.4188732e+10 0.069572339 0.033938760 -15.466159 49.390618 6507.9204 5.8058609e+10 0.080303522 0.034671586 -15.579647 49.281495 6510.3506 5.2424078e+10 0.091282365 0.035404412 -15.703616 49.162294 6512.7808 4.7311739e+10 0.10255556 0.036137238 -15.825029 49.045573 6515.2111 4.2487954e+10 0.11408449 0.036870063 -15.930984 48.943856 6517.6413 3.8493746e+10 0.12606983 0.037602889 -16.036939 48.842138 6520.0715 3.5242569e+10 0.13857643 0.038335715 -16.142893 48.737106 6522.5017 3.2321992e+10 0.15012856 0.039048630 -16.248848 48.631151 6524.9319 2.9520591e+10 0.15720850 0.039758033 -16.360411 48.519588 6527.3621 2.6587139e+10 0.16201485 0.040979394 -16.479630 48.400369 6529.7924 2.3797129e+10 0.16631942 0.043497953 -16.593145 48.285473 6532.2226 2.1410894e+10 0.16993906 0.046870137 -16.694862 48.179518 6534.6528 1.9420521e+10 0.17194387 0.048127171 -16.796579 48.073563 6537.0830 1.7555807e+10 0.17308377 0.048724367 -16.910585 47.954807 6539.5132 1.5724591e+10 0.17379335 0.050264890 -17.025018 47.835606 6541.9435 1.4023583e+10 0.17322877 0.051020574 -17.128400 47.731601 6544.3737 1.2619326e+10 0.17213021 0.051947480 -17.230117 47.629885 6546.8039 1.1498909e+10 0.17035923 0.053126000 -17.331833 47.526010 6549.2341 1.0558494e+10 0.16757704 0.054204858 -17.433550 47.420055 6551.6643 9.6832751e+09 0.16512549 0.055468941 -17.536461 47.312110 6554.0945 8.8111775e+09 0.16205700 0.054834364 -17.646143 47.192890 6556.5248 7.9643722e+09 0.15963832 0.053935975 -17.755176 47.074376 6558.9550 7.2024997e+09 0.15672626 0.052425542 -17.852654 46.968421 6561.3852 6.5763749e+09 0.15373368 0.051182862 -17.950132 46.862466 6563.8154 6.0271970e+09 0.15062583 0.048985115 -18.056063 46.747324 6566.2456 5.4967369e+09 0.14816755 0.047043928 -18.165728 46.628123 6568.6759 5.0161841e+09 0.14622813 0.045150390 -18.265599 46.516820 6571.1061 4.6074417e+09 0.14443015 0.044474305 -18.358840 46.410866 6573.5363 4.2618502e+09 0.14211752 0.043227120 -18.452080 46.304911 6575.9665 3.9800534e+09 0.13923933 0.041404995 -18.545320 46.198956 6578.3967 3.7098785e+09 0.13613797 0.038023135 -18.638560 46.093001 6580.8269 3.4448161e+09 0.13286019 0.035756536 -18.742027 45.975425 6583.2572 3.1824313e+09 0.13018040 0.034891501 -18.846925 45.856224 6585.6874 2.9343469e+09 0.12712088 0.033421227 -18.942739 45.747345 6588.1176 2.7243972e+09 0.12439398 0.033340658 -19.035991 45.641376 6590.5478 2.5421906e+09 0.12070565 0.030043039 -19.132138 45.529838 6592.9780 2.3657394e+09 0.11702735 0.027123554 -19.232266 45.410637 6595.4083 2.1879693e+09 0.11296481 0.025665908 -19.328795 45.297093 6597.8385 2.0349854e+09 0.10913461 0.025458137 -19.417797 45.195375 6600.2687 1.9061012e+09 0.10668238 0.025542253 -19.506800 45.093658 6602.6989 1.8020501e+09 0.10433035 0.026920213 -19.595801 44.987856 6605.1291 1.7047763e+09 0.10240010 0.026773370 -19.684803 44.881901 6607.5593 1.6004356e+09 0.10026447 0.024602499 -19.780532 44.767938 6609.9896 1.4910332e+09 0.097219485 0.023999878 -19.880661 44.648737 6612.4198 1.3831739e+09 0.095187255 0.024007107 -19.975152 44.536248 6614.8500 1.2937049e+09 0.094265199 0.023354876 -20.064166 44.430279 6617.2802 1.2163384e+09 0.093044703 0.023532154 -20.154119 44.322351 6619.7104 1.1413046e+09 0.092551766 0.024697331 -20.249480 44.203150 6622.1407 1.0624056e+09 0.091497812 0.024720555 -20.344303 44.084622 6624.5709 9.9251463e+08 0.089840292 0.025167894 -20.429067 43.978667 6627.0011 9.3108221e+08 0.087845477 0.025317231 -20.513832 43.872712 6629.4313 8.7591914e+08 0.086712319 0.026031123 -20.605920 43.757600 6631.8615 8.1920253e+08 0.084906769 0.026018279 -20.701281 43.638399 6634.2917 7.5851652e+08 0.083436455 0.026348124 -20.787830 43.527066 6636.7220 7.1230708e+08 0.081815799 0.026269385 -20.868355 43.421112 6639.1522 6.6722428e+08 0.080709726 0.025573682 -20.952363 43.312047 6641.5824 6.2535981e+08 0.081237660 0.025150278 -21.047738 43.192827 6644.0126 5.8417522e+08 0.080151969 0.025344970 -21.141071 43.075432 6646.4428 5.4379970e+08 0.078991216 0.026149373 -21.221597 42.969477 6648.8731 5.1304602e+08 0.077500586 0.027548709 -21.302123 42.863522 6651.3033 4.8427358e+08 0.076868771 0.026716579 -21.390481 42.747262 6653.7335 4.5399543e+08 0.076057736 0.027900155 -21.481074 42.628061 6656.1637 4.2560983e+08 0.073998369 0.028167102 -21.564814 42.517877 6658.5939 3.9808440e+08 0.072295497 0.031114417 -21.645340 42.411922 6661.0241 3.7041879e+08 0.070944211 0.032547246 -21.727567 42.301713 6663.4544 3.4928400e+08 0.069833010 0.032357298 -21.813392 42.182511 6665.8846 3.2898972e+08 0.069874771 0.027097716 -21.897083 42.066272 6668.3148 3.1034652e+08 0.069236191 0.027749348 -21.973381 41.960304 6670.7450 2.9102980e+08 0.069139534 0.026983479 -22.049678 41.854335 6673.1752 2.6971051e+08 0.068956842 0.027721292 -22.138338 41.736924 6675.6055 2.5261426e+08 0.067025336 0.030958019 -22.228931 41.617723 6678.0357 2.3597373e+08 0.065736597 0.030912756 -22.315864 41.498522 6680.4659 2.1984706e+08 0.066183241 0.029542021 -22.401689 41.379321 6682.8961 2.0264023e+08 0.067017121 0.031109202 -22.478283 41.268997 6685.3263 1.8882527e+08 0.066733100 0.033049516 -22.550332 41.163042 6687.7565 1.7572975e+08 0.064381898 0.033920969 -22.626660 41.052973 6690.1868 1.6443951e+08 0.062045921 0.033094461 -22.712485 40.933771 6692.6170 1.5347026e+08 0.060805407 0.032048869 -22.798311 40.814570 6695.0472 1.4395124e+08 0.059911257 0.029850804 -22.884134 40.695369 6697.4774 1.3768508e+08 0.058914593 0.030151683 -22.968361 40.577703 6699.9076 1.2976157e+08 0.056963941 0.030752947 -23.040420 40.471734 6702.3379 1.2636325e+08 0.055009356 0.033146505 -23.112479 40.365766 6704.7681 1.1898850e+08 0.054956300 0.036554716 -23.191347 40.249782 6707.1983 1.1355393e+08 0.054168926 0.040158422 -23.272404 40.130581 6709.6285 1.1041886e+08 0.052844965 0.040732784 -23.353461 40.011380 6712.0587 1.0766526e+08 0.050193484 0.041938988 -23.434518 39.892178 6714.4889 1.0467730e+08 0.047619772 0.047340167 -23.515575 39.772977 6716.9192 1.0155922e+08 0.045194820 0.049755197 -23.596632 39.653776 6719.3494 95498747. 0.042587646 0.051037905 -23.671530 39.540734 6721.7796 90108662. 0.042451403 0.050538795 -23.739341 39.434779 6724.2098 86058675. 0.039478385 0.048174584 -23.808549 39.327930 6726.6400 82633149. 0.035480916 0.040957140 -23.889605 39.213497 6729.0702 83961574. 0.034916430 0.040998604 -23.970621 39.099022 6731.5005 85279215. 0.032861103 0.042746048 -24.046912 38.979822 6733.9307 84074806. 0.031295530 0.048977273 -24.123201 38.860621 6736.3609 76618056. 0.032142843 0.051719425 -24.199490 38.741420 6738.7911 69984210. 0.032007940 0.061676582 -24.275780 38.622219 6741.2213 64023535. 0.029184798 0.066389966 -24.352078 38.503003 6743.6516 62067638. 0.023378223 0.075442834 -24.428378 38.383785 6746.0818 61783895. 0.020033569 0.078036537 -24.504669 38.264579 6748.5120 58027162. 0.013321691 0.069710520 -24.580958 38.145378 6750.9422 55944784. 0.0051963867 0.073612997 -24.657247 38.026177 6753.3724 50188938. -0.027814705 0.074182543 -24.733535 37.906976 6755.8026 47010220. -0.011166098 0.074253435 -24.807335 37.787774 6760.6631 43757870. 0.047814410 0.077325743 -24.952401 37.549371