# # 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 = 43.986906 km # Date (UTC) = 2016-12-21T10:30:57.016 # Date (julian) = 2457743.93815990 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.9678 6.0590085e+10 0.10020478 0.035288982 99.264041 27.446224 6512.0202 5.5248584e+10 0.11048730 0.035907856 99.310569 27.349587 6514.0725 4.9779999e+10 0.12078895 0.036526730 99.359952 27.252949 6516.1248 4.5110172e+10 0.13128539 0.037145605 99.410060 27.156311 6518.1771 4.0984276e+10 0.14194332 0.037764479 99.460140 27.059673 6520.2295 3.7136398e+10 0.15269989 0.038383353 99.506684 26.963036 6522.2818 3.3883608e+10 0.16284791 0.038991044 99.553213 26.866399 6524.3341 3.0991640e+10 0.16820494 0.039545661 99.599743 26.769759 6526.3865 2.8462743e+10 0.17227055 0.040073243 99.646280 26.673109 6528.4388 2.6162778e+10 0.17616943 0.041790573 99.692817 26.576459 6530.4911 2.3955949e+10 0.17912694 0.044516249 99.739350 26.479813 6532.5434 2.1831265e+10 0.18162015 0.047138182 99.785878 26.383176 6534.5958 1.9950185e+10 0.18213203 0.048111218 99.832407 26.286538 6536.6481 1.8273210e+10 0.18134093 0.048370373 99.876710 26.189900 6538.7004 1.6761650e+10 0.18062461 0.049497753 99.919661 26.093262 6540.7528 1.5325306e+10 0.17916146 0.051209724 99.962612 25.996624 6542.8051 1.3957964e+10 0.17672657 0.051307893 100.00853 25.899987 6544.8574 1.2739643e+10 0.17410620 0.052339899 100.05505 25.803349 6546.9097 1.1649210e+10 0.17080126 0.053213098 100.10158 25.706711 6548.9621 1.0693641e+10 0.16728875 0.053954954 100.14812 25.610061 6551.0144 9.8432295e+09 0.16471527 0.055240806 100.19466 25.513411 6553.0667 9.0615615e+09 0.16290971 0.055301523 100.24033 25.416764 6555.1191 8.3870001e+09 0.16059424 0.054753328 100.28328 25.320127 6557.1714 7.7620123e+09 0.15792857 0.053758682 100.32623 25.223489 6559.2237 7.1890375e+09 0.15481449 0.052361930 100.37077 25.126851 6561.2760 6.6723953e+09 0.15171933 0.051236653 100.41731 25.030213 6563.3284 6.1830122e+09 0.14891755 0.049548516 100.46384 24.933575 6565.3807 5.7523099e+09 0.14629781 0.047886107 100.50803 24.836938 6567.4330 5.3339264e+09 0.14404984 0.046251051 100.55098 24.740300 6569.4854 4.9482591e+09 0.14184903 0.044884014 100.59393 24.643662 6571.5377 4.5937145e+09 0.13984681 0.044356423 100.63688 24.547014 6573.5900 4.2739663e+09 0.13731684 0.043184009 100.67984 24.450365 6575.6423 3.9987042e+09 0.13473141 0.041730236 100.72279 24.353716 6577.6947 3.7399498e+09 0.13196079 0.039129211 100.76574 24.257078 6579.7470 3.5041408e+09 0.12890457 0.036659838 100.80869 24.160440 6581.7993 3.2824479e+09 0.12599589 0.035354561 100.85261 24.064772 6583.8517 3.0767779e+09 0.12313901 0.034590596 100.89914 23.971714 6585.9040 2.8831532e+09 0.12036841 0.033248057 100.94567 23.878656 6587.9563 2.6978219e+09 0.11812730 0.033370252 100.99049 23.783889 6590.0086 2.5266167e+09 0.11521751 0.031045991 101.03344 23.687252 6592.0610 2.3753511e+09 0.11188436 0.028014305 101.07639 23.590614 6594.1133 2.2349186e+09 0.10895152 0.026110328 101.11690 23.493968 6596.1656 2.1058897e+09 0.10604450 0.025726521 101.15627 23.397318 6598.2180 1.9805287e+09 0.10432254 0.025303105 101.19565 23.300668 6600.2703 1.8612066e+09 0.10391642 0.025545533 101.23821 23.204029 6602.3226 1.7577080e+09 0.10335213 0.027241327 101.28116 23.107391 6604.3749 1.6545712e+09 0.10223458 0.026293905 101.32411 23.011096 6606.4273 1.5611984e+09 0.10169511 0.026736170 101.36706 22.918037 6608.4796 1.4675586e+09 0.099317309 0.023719691 101.41001 22.824979 6610.5319 1.3832668e+09 0.096577879 0.024511224 101.45296 22.730841 6612.5843 1.3068477e+09 0.095098035 0.023884217 101.49591 22.634203 6614.6366 1.2316714e+09 0.094110640 0.023501910 101.53886 22.537565 6616.6889 1.1647396e+09 0.092755157 0.023390424 101.57999 22.442739 6618.7412 1.1000565e+09 0.092142085 0.024330522 101.61937 22.349668 6620.7936 1.0414141e+09 0.091419281 0.025022925 101.65875 22.256597 6622.8459 9.9072962e+08 0.090029179 0.024532842 101.70067 22.160979 6624.8982 9.4032328e+08 0.088583685 0.025343127 101.74363 22.064341 6626.9506 8.9316624e+08 0.086537528 0.025379805 101.78658 21.967703 6629.0029 8.4451016e+08 0.085465324 0.026108583 101.82623 21.871066 6631.0552 8.0198015e+08 0.083759857 0.025936375 101.86560 21.774429 6633.1075 7.6318333e+08 0.082440908 0.026171029 101.90543 21.678244 6635.1599 7.2673943e+08 0.080914560 0.026423763 101.94838 21.585186 6637.2122 6.9532969e+08 0.079423605 0.026057483 101.99132 21.492128 6639.2645 6.5803185e+08 0.078677672 0.025533527 102.03472 21.395197 6641.3169 6.2371043e+08 0.079408957 0.025149376 102.07902 21.290488 6643.3692 5.9035592e+08 0.079136697 0.025248361 102.12332 21.185779 6645.4215 5.5837782e+08 0.078546473 0.025649148 102.16344 21.087926 6647.4738 5.3209494e+08 0.077797256 0.026687260 102.20281 20.991288 6649.5262 5.0996807e+08 0.077098575 0.026908387 102.24218 20.894848 6651.5785 4.8457016e+08 0.076920059 0.026927502 102.28155 20.801790 6653.6308 4.5978150e+08 0.076639275 0.027847740 102.32092 20.708732 6655.6832 4.3566058e+08 0.075344642 0.027892498 102.36123 20.614738 6657.7355 4.1581686e+08 0.074023733 0.029754251 102.40418 20.518101 6659.7878 3.9954613e+08 0.072752907 0.031670260 102.44713 20.421464 6661.8401 3.7636235e+08 0.071527434 0.032962852 102.49071 20.321061 6663.8925 3.5218481e+08 0.070417168 0.032235887 102.53500 20.216368 6665.9448 3.2647366e+08 0.070692643 0.026999043 102.57929 20.111675 6667.9971 3.0491166e+08 0.070189515 0.027469720 102.61875 20.018419 6670.0495 2.8714353e+08 0.069744965 0.027305720 102.65812 19.925348 6672.1018 2.7037479e+08 0.069567557 0.026938596 102.69750 19.832280 6674.1541 2.5956161e+08 0.068703349 0.029084796 102.73687 19.739221 6676.2064 2.5030773e+08 0.066498796 0.031846775 102.77624 19.646163 6678.2588 2.4013680e+08 0.065600808 0.030763537 102.81419 19.551686 6680.3111 2.3006435e+08 0.065953167 0.029508596 102.84998 19.455048 6682.3634 2.1934371e+08 0.066577828 0.030702216 102.88578 19.358410 6684.4158 2.0982861e+08 0.066643384 0.032675190 102.92669 19.256919 6686.4681 2.0248366e+08 0.065672930 0.034033423 102.97098 19.152226 6688.5204 1.9439565e+08 0.063219396 0.033905319 103.01469 19.048917 6690.5727 1.8560548e+08 0.061992678 0.033050227 103.05407 18.955846 6692.6251 1.7666470e+08 0.061203809 0.032039472 103.09344 18.862776 6694.6774 1.6902227e+08 0.060566595 0.030311616 103.13442 18.765922 6696.7297 1.6245495e+08 0.060204420 0.029978973 103.17871 18.661231 6698.7821 1.5683207e+08 0.059075788 0.031291279 103.22301 18.556539 6700.8344 1.4992067e+08 0.057363779 0.031286605 103.26014 18.461643 6702.8867 1.4117568e+08 0.056884666 0.033584775 103.29593 18.368585 6704.9390 1.3421253e+08 0.057012058 0.036638672 103.33213 18.274967 6706.9914 1.2607414e+08 0.056583608 0.040171807 103.37642 18.170275 6709.0437 1.1962978e+08 0.055932241 0.041104749 103.42072 18.065582 6711.0960 1.1613926e+08 0.054187723 0.040801486 103.46021 17.967458 6713.1484 1.1310936e+08 0.052189115 0.044223196 103.49600 17.874399 6715.2007 1.0928330e+08 0.050229245 0.047583843 103.53179 17.781341 6717.2530 1.0211725e+08 0.048114736 0.049858618 103.57414 17.679316 6719.3053 94137934. 0.045993257 0.051079742 103.61843 17.574624 6721.3577 87403223. 0.046156964 0.050411667 103.66028 17.473269 6723.4100 87183678. 0.044753365 0.049597607 103.69608 17.380198 6725.4623 87246201. 0.040731646 0.041287226 103.73187 17.287128 6727.5147 88713660. 0.039626715 0.040274717 103.76988 17.188320 6729.5670 86265133. 0.038753499 0.040667518 103.81014 17.083628 6731.6193 81850035. 0.036925321 0.042982572 103.85045 16.978935 6733.6716 79827169. 0.035831752 0.047570845 103.89474 16.874242 6735.7240 74780918. 0.036770785 0.050061980 103.93904 16.769549 6737.7763 66868447. 0.037556441 0.056608484 103.97885 16.670984 6739.8286 63599471. 0.037201351 0.063840634 104.01464 16.577926 6741.8810 61428666. 0.034857831 0.068271229 104.05043 16.484868 6743.9333 62222102. 0.030050667 0.077343350 104.08951 16.383285 6745.9856 61653414. 0.028296547 0.078981230 104.12977 16.278593 6748.0379 51954386. 0.021500477 0.067216511 104.17004 16.173901 6750.0903 49213592. 0.015788869 0.072158271 104.21031 16.069209 6752.1426 47588138. 0.0065704715 0.073969463 104.25057 15.964516 6754.1949 48678574. -0.029083218 0.075900004 104.29084 15.862907 6756.2473 50331188. -0.00084654177 0.074803134 104.33110 15.762240 6758.2996 46740572. 0.060608858 0.074338833 104.37137 15.660433