# # 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 = 33.638567 km # Date (UTC) = 2017-01-22T10:36:40.484 # Date (julian) = 2457775.94213523 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.0946 5.7598762e+10 0.10296675 0.035327203 -35.686206 55.435954 6511.8818 5.2785232e+10 0.11209309 0.035866139 -35.826476 55.314387 6513.6691 4.8143843e+10 0.12129734 0.036405076 -35.966745 55.192821 6515.4563 4.3552714e+10 0.13053662 0.036944012 -36.111579 55.075822 6517.2435 3.9407172e+10 0.13987435 0.037482948 -36.256522 54.958931 6519.0308 3.5895234e+10 0.14936475 0.038021885 -36.380753 54.852680 6520.8180 3.2809501e+10 0.15896966 0.038560821 -36.500980 54.748485 6522.6052 3.0236875e+10 0.16703045 0.039075738 -36.626473 54.638336 6524.3925 2.7679847e+10 0.17184358 0.039566387 -36.762064 54.516769 6526.1797 2.5246422e+10 0.17497041 0.039856487 -36.893704 54.398746 6527.9669 2.3248518e+10 0.17915006 0.041418483 -37.009923 54.294550 6529.7542 2.1517820e+10 0.18211217 0.043437124 -37.126142 54.190354 6531.5414 1.9921767e+10 0.18358961 0.046016714 -37.252777 54.077163 6533.3287 1.8183089e+10 0.18482079 0.047659254 -37.383693 53.960273 6535.1159 1.6579689e+10 0.18494362 0.048174025 -37.503950 53.850618 6536.9031 1.5320233e+10 0.18382668 0.048598549 -37.616162 53.746422 6538.6904 1.4203316e+10 0.18216765 0.049492850 -37.729768 53.640933 6540.4776 1.3082442e+10 0.18042693 0.051079731 -37.860658 53.519390 6542.2648 1.1938393e+10 0.17743936 0.051102783 -37.991548 53.397847 6544.0521 1.0947312e+10 0.17434895 0.051686587 -38.101217 53.292532 6545.8393 1.0164474e+10 0.17166601 0.052463086 -38.209421 53.188337 6547.6265 9.4720223e+09 0.17004451 0.053525627 -38.325563 53.076496 6549.4138 8.7883345e+09 0.16774451 0.054387952 -38.451805 52.954929 6551.2010 8.1182392e+09 0.16558367 0.055306310 -38.572610 52.838598 6552.9883 7.5516845e+09 0.16389307 0.055338025 -38.680814 52.734402 6554.7755 7.1068052e+09 0.16161146 0.054848654 -38.789018 52.630206 6556.5627 6.7376336e+09 0.15881159 0.053930395 -38.893991 52.526010 6558.3500 6.4062475e+09 0.15610997 0.052941096 -38.998186 52.421813 6560.1372 6.0564406e+09 0.15338359 0.052150610 -39.107780 52.310766 6561.9244 5.6455934e+09 0.15036001 0.050917141 -39.229347 52.184526 6563.7117 5.2478831e+09 0.14717554 0.049105131 -39.347236 52.062078 6565.4989 4.9074464e+09 0.14467057 0.047751884 -39.447425 51.957881 6567.2861 4.6395342e+09 0.14222297 0.046375248 -39.547613 51.853684 6569.0734 4.4115282e+09 0.13934670 0.044857200 -39.647802 51.749488 6570.8606 4.1739135e+09 0.13711098 0.044561014 -39.747990 51.645293 6572.6478 3.9475946e+09 0.13465794 0.043859149 -39.851209 51.537946 6574.4351 3.7007989e+09 0.13166362 0.042646035 -39.968099 51.416379 6576.2223 3.4346573e+09 0.12875668 0.041115496 -40.084105 51.295554 6578.0096 3.1622841e+09 0.12599300 0.038634520 -40.180286 51.191358 6579.7968 2.9292798e+09 0.12294144 0.036632464 -40.276466 51.087163 6581.5840 2.7657240e+09 0.11977133 0.035419756 -40.372647 50.980773 6583.3713 2.6392381e+09 0.11712430 0.034833747 -40.468829 50.872569 6585.1585 2.5215913e+09 0.11486425 0.033844053 -40.565010 50.764574 6586.9457 2.4116920e+09 0.11280382 0.033159071 -40.661191 50.660377 6588.7330 2.2825868e+09 0.11102496 0.033135151 -40.757371 50.556180 6590.5202 2.1361834e+09 0.10905510 0.030094390 -40.859875 50.442313 6592.3074 1.9670724e+09 0.10721913 0.027774900 -40.967414 50.320748 6594.0947 1.8046500e+09 0.10530849 0.026120546 -41.068529 50.204768 6595.8819 1.6870594e+09 0.10297179 0.025715029 -41.160702 50.096565 6597.6692 1.6071669e+09 0.10114989 0.025511566 -41.252876 49.988361 6599.4564 1.5439133e+09 0.099694405 0.024957180 -41.345051 49.883856 6601.2436 1.4761686e+09 0.099254744 0.027160426 -41.437226 49.779660 6603.0309 1.4006410e+09 0.098134916 0.026645000 -41.529400 49.675464 6604.8181 1.3385513e+09 0.097081090 0.026557039 -41.621573 49.571267 6606.6053 1.2814309e+09 0.095895504 0.026416187 -41.713746 49.467070 6608.3926 1.2110672e+09 0.093427286 0.023721992 -41.815864 49.342348 6610.1798 1.1416816e+09 0.090802034 0.024174785 -41.918706 49.216131 6611.9670 1.0624535e+09 0.088718885 0.024341765 -42.009911 49.107376 6613.7543 9.9836704e+08 0.087751891 0.023850339 -42.098077 49.003181 6615.5415 9.3847204e+08 0.086399945 0.023268193 -42.185050 48.897793 6617.3288 8.8384246e+08 0.085358787 0.023548248 -42.269208 48.789589 6619.1160 8.3834340e+08 0.084488820 0.024553902 -42.353366 48.681385 6620.9032 8.0087210e+08 0.083635998 0.025058263 -42.440740 48.576397 6622.6905 7.7130700e+08 0.082387573 0.024574213 -42.528907 48.472202 6624.4777 7.3850765e+08 0.081103306 0.025118022 -42.615843 48.368006 6626.2649 7.1083849e+08 0.080184742 0.026253347 -42.700001 48.263809 6628.0522 6.7862729e+08 0.079224878 0.025724279 -42.784158 48.159612 6629.8394 6.4513607e+08 0.078459578 0.025957337 -42.879705 48.037520 6631.6266 6.0872923e+08 0.077332206 0.025994421 -42.977892 47.911279 6633.4139 5.7086140e+08 0.076645694 0.026224513 -43.063941 47.799875 6635.2011 5.3848511e+08 0.075891901 0.026429949 -43.144092 47.695679 6636.9884 5.0897509e+08 0.075042170 0.026165933 -43.224243 47.590772 6638.7756 4.8369315e+08 0.074537950 0.025637852 -43.304395 47.482567 6640.5628 4.5933517e+08 0.075402689 0.025201789 -43.384546 47.374363 6642.3501 4.4256324e+08 0.075607778 0.025166022 -43.467432 47.268894 6644.1373 4.2783259e+08 0.074968548 0.025358446 -43.551590 47.164699 6645.9245 4.0639682e+08 0.074545658 0.025884796 -43.634248 47.059753 6647.7118 3.8159349e+08 0.074200832 0.026812533 -43.710392 46.951550 6649.4990 3.5607780e+08 0.073862268 0.026945825 -43.786536 46.843346 6651.2862 3.3672923e+08 0.073930687 0.026703533 -43.865452 46.737914 6653.0735 3.2731695e+08 0.073908209 0.027563180 -43.945601 46.633717 6654.8607 3.1548624e+08 0.073202136 0.027669551 -44.027458 46.525188 6656.6480 2.9825731e+08 0.071969520 0.028592125 -44.116296 46.398947 6658.4352 2.7845004e+08 0.071227020 0.030832902 -44.204400 46.273979 6660.2224 2.5376288e+08 0.070727439 0.031828175 -44.280542 46.169784 6662.0097 2.3916284e+08 0.069843644 0.033038848 -44.356685 46.065589 6663.7969 2.2989531e+08 0.068949486 0.032262372 -44.432829 45.959138 6665.5841 2.2147768e+08 0.069138385 0.027590000 -44.508974 45.850934 6667.3714 2.1200314e+08 0.068792433 0.027239870 -44.585118 45.742729 6669.1586 2.0217860e+08 0.067757154 0.028192799 -44.661261 45.634526 6670.9458 1.8802171e+08 0.067860643 0.026890437 -44.737404 45.526322 6672.7331 1.7834325e+08 0.067246835 0.027304507 -44.811255 45.420411 6674.5203 1.7308876e+08 0.065558599 0.029393715 -44.883391 45.316215 6676.3076 1.6294454e+08 0.062947973 0.031911942 -44.955526 45.211713 6678.0948 1.5917600e+08 0.061287541 0.030873213 -45.027662 45.103509 6679.8820 1.5436007e+08 0.060340844 0.029538903 -45.099798 44.995305 6681.6693 1.4414773e+08 0.059782135 0.030170808 -45.178914 44.879348 6683.4565 1.3823239e+08 0.058785369 0.031857588 -45.263058 44.757806 6685.2437 1.2773264e+08 0.056986436 0.032962284 -45.341894 44.642160 6687.0310 1.2019667e+08 0.053792283 0.034325626 -45.414030 44.533956 6688.8182 1.1573270e+08 0.049843155 0.033974061 -45.486166 44.425751 6690.6054 1.0898475e+08 0.047156262 0.033046479 -45.558301 44.321343 6692.3927 1.0044880e+08 0.044216976 0.032309330 -45.630435 44.217148 6694.1799 91419444. 0.040894022 0.031008861 -45.700761 44.111142 6695.9672 85584399. 0.038454547 0.029681819 -45.768889 44.002939 6697.7544 79367545. 0.034855978 0.030186735 -45.837018 43.894735 6699.5416 77472547. 0.030993207 0.031090665 -45.905146 43.790364 6701.3289 76048570. 0.025553347 0.031891983 -45.973273 43.686169 6703.1161 73780007. 0.016323594 0.033965755 -46.046636 43.571812 6704.9033 72757998. -0.040302554 0.036621139 -46.126122 43.445571 6706.6906 66203854. 0.0076472975 0.039648293 -46.201949 43.326431 6708.4778 57908794. 0.12975940 0.040563895 -46.270077 43.222234