# # 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 = 56.759113 km # Date (UTC) = 2014-01-21T09:16:26.222 # Date (julian) = 2456678.88641461 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.8685 5.3931526e+10 0.061146533 0.033449758 113.23840 45.064237 6506.5567 4.8907448e+10 0.072336586 0.034260355 113.37608 44.867352 6509.2448 4.4093352e+10 0.083756020 0.035070952 113.50966 44.670504 6511.9329 4.0072672e+10 0.095607320 0.035881549 113.62427 44.501606 6514.6210 3.6498455e+10 0.10787329 0.036692146 113.74526 44.323304 6517.3092 3.3358479e+10 0.12061917 0.037502743 113.87887 44.126397 6519.9973 3.0424907e+10 0.13381360 0.038313340 113.99499 43.955282 6522.6854 2.7596891e+10 0.14548962 0.039096736 114.11262 43.781071 6525.3735 2.5112377e+10 0.15184409 0.039739583 114.23921 43.591196 6528.0617 2.2786300e+10 0.15681776 0.041491404 114.35067 43.418954 6530.7498 2.0513223e+10 0.16030452 0.044878392 114.46237 43.245208 6533.4379 1.8521697e+10 0.16381047 0.047705689 114.58895 43.048302 6536.1260 1.6705762e+10 0.16417472 0.047903274 114.70189 42.872628 6538.8142 1.5131540e+10 0.16610537 0.049553137 114.81038 42.703855 6541.5023 1.3874859e+10 0.16675666 0.051163640 114.91888 42.535080 6544.1904 1.2649212e+10 0.16663959 0.051798818 115.03219 42.357108 6546.8785 1.1513745e+10 0.16667208 0.053187424 115.15147 42.167573 6549.5667 1.0509630e+10 0.16563912 0.054543759 115.25394 41.998801 6552.2548 9.5748733e+09 0.16411320 0.055522636 115.36248 41.820031 6554.9429 8.7734882e+09 0.16164953 0.054852167 115.48203 41.623124 6557.6310 8.0162607e+09 0.15860137 0.053470568 115.58564 41.452476 6560.3192 7.3687608e+09 0.15548243 0.051986539 115.68811 41.283703 6563.0073 6.8564771e+09 0.15235277 0.049919932 115.79058 41.114928 6565.6954 6.3532411e+09 0.14951083 0.047528742 115.89923 40.928844 6568.3835 5.8674602e+09 0.14770618 0.045419096 116.00981 40.738540 6571.0717 5.4197221e+09 0.14612353 0.044483702 116.11228 40.575795 6573.7598 5.0374670e+09 0.14414571 0.043047767 116.21153 40.409829 6576.4479 4.7273971e+09 0.14195075 0.040855832 116.30797 40.241056 6579.1360 4.4543357e+09 0.13903811 0.036995710 116.40441 40.072281 6581.8242 4.1740659e+09 0.13681358 0.035347040 116.50281 39.897424 6584.5123 3.8850887e+09 0.13466117 0.034236447 116.60829 39.700518 6587.2004 3.5973470e+09 0.13268473 0.033202774 116.70660 39.530742 6589.8885 3.3337619e+09 0.13050128 0.031283192 116.80223 39.367181 6592.5767 3.1158412e+09 0.12748184 0.027513407 116.89264 39.198409 6595.2648 2.9264623e+09 0.12427652 0.025651031 116.98592 39.029636 6597.9529 2.7532152e+09 0.12117006 0.025422023 117.08236 38.860864 6600.6410 2.5986223e+09 0.11982217 0.026307737 117.17388 38.692089 6603.3292 2.4446224e+09 0.11799467 0.026468408 117.26668 38.519978 6606.0173 2.2874548e+09 0.11655373 0.027472892 117.37217 38.330102 6608.7054 2.1364413e+09 0.11261567 0.023713720 117.46655 38.155782 6611.3935 2.0004653e+09 0.10852147 0.024707493 117.55649 37.987036 6614.0817 1.8882261e+09 0.10688292 0.023884228 117.64087 37.818264 6616.7698 1.7893687e+09 0.10530732 0.023403118 117.72777 37.649490 6619.4579 1.6876533e+09 0.10501399 0.024636402 117.81818 37.480716 6622.1460 1.5918173e+09 0.10416174 0.024719121 117.90403 37.316515 6624.8342 1.5012200e+09 0.10271577 0.025308834 117.98842 37.153168 6627.5223 1.4193680e+09 0.10088353 0.025518563 118.07280 36.984396 6630.2104 1.3536731e+09 0.099534588 0.025928820 118.15985 36.815623 6632.8985 1.2845119e+09 0.097854914 0.026140087 118.25026 36.646851 6635.5867 1.2119291e+09 0.096159024 0.026487767 118.34696 36.461583 6638.2748 1.1331151e+09 0.094973692 0.025659670 118.43819 36.279297 6640.9629 1.0600972e+09 0.095369777 0.025152838 118.51654 36.110524 6643.6510 9.9902367e+08 0.094634407 0.025290918 118.59913 35.945974 6646.3392 9.4658033e+08 0.093318269 0.026095710 118.68351 35.782977 6649.0273 9.0135975e+08 0.091723345 0.027596068 118.76790 35.614202 6651.7154 8.5702677e+08 0.091138252 0.027032428 118.84998 35.445429 6654.4035 8.1412510e+08 0.090018943 0.027864313 118.92834 35.276656 6657.0917 7.7129294e+08 0.087592670 0.029007441 119.00670 35.112245 6659.7798 7.3267519e+08 0.085628639 0.031671933 119.08545 34.949110 6662.4679 6.9682011e+08 0.083629003 0.032781743 119.16983 34.780336 6665.1560 6.6838720e+08 0.082401005 0.028291452 119.25177 34.614007 6667.8442 6.3916978e+08 0.081291486 0.027413534 119.33013 34.451261 6670.5323 6.0402333e+08 0.080329635 0.027082031 119.41824 34.263016 6673.2204 5.6817573e+08 0.079700243 0.027788865 119.50347 34.077193 6675.9085 5.3162860e+08 0.077305593 0.031538546 119.57580 33.914448 6678.5967 5.0356491e+08 0.076142792 0.030537539 119.65214 33.747692 6681.2848 4.8065318e+08 0.077212003 0.029875845 119.73051 33.578958 6683.9729 4.6180042e+08 0.077695853 0.032614399 119.80886 33.416212 6686.6610 4.3995988e+08 0.076547227 0.034145688 119.88513 33.251372 6689.3492 4.2051209e+08 0.073442727 0.033701719 119.95746 33.082596 6692.0373 4.0275490e+08 0.072272086 0.032722026 120.03394 32.917971 6694.7254 3.8428062e+08 0.071473089 0.030244319 120.11212 32.755225 6697.4135 3.6951744e+08 0.070784550 0.030143599 120.18446 32.592482 6700.1017 3.5122826e+08 0.068967183 0.030743126 120.26125 32.417087 6702.7898 3.3144700e+08 0.067737091 0.033507381 120.34564 32.220177 6705.4779 3.0958242e+08 0.067943423 0.037518243 120.41858 32.055693 6708.1660 2.8956713e+08 0.067517433 0.040224390 120.49090 31.891226 6710.8542 2.7595014e+08 0.065597885 0.040663687 120.56323 31.722451 6713.5423 2.6685620e+08 0.062792995 0.045647971 120.63556 31.557475 6716.2304 2.5773344e+08 0.060275155 0.048740740 120.70790 31.394729 6718.9185 2.4725190e+08 0.057186858 0.051242971 120.78023 31.231984 6721.6067 2.3820387e+08 0.057255311 0.050486690 120.85068 31.067359 6724.2948 2.2873382e+08 0.054166670 0.047464976 120.91699 30.898586 6726.9829 2.1787167e+08 0.050345060 0.040960232 120.99510 30.716035 6729.6710 2.0584122e+08 0.049298109 0.040598162 121.07670 30.532424 6732.3592 1.9215540e+08 0.047208288 0.043806330 121.14903 30.369678 6735.0473 1.8079402e+08 0.047068199 0.049343634 121.21792 30.206932 6737.7354 1.7298727e+08 0.048929818 0.056478247 121.28422 30.044186 6740.4235 1.6582729e+08 0.048521543 0.064773907 121.35053 29.875938 6743.1117 1.5666533e+08 0.044436927 0.071800727 121.41963 29.701809 6745.7998 1.5046455e+08 0.041245246 0.078903111 121.49699 29.511934 6748.4879 1.4439015e+08 0.036961203 0.069583835 121.57017 29.344625 6751.1760 1.3993894e+08 0.033526180 0.073786101 121.64145 29.181880 6753.8642 1.3830753e+08 0.030499749 0.075773884 121.70776 29.019135 6756.5523 1.2938691e+08 0.027262224 0.075588031 121.77974 28.842451 6759.2404 1.2384920e+08 0.027642013 0.075877970 121.85553 28.655064 6761.9285 1.1684745e+08 0.031036846 0.078044940 121.91581 28.492318 6764.6167 1.1039764e+08 0.034642190 0.079512828 121.97869 28.329573 6767.3048 1.0673763e+08 0.034163279 0.081634480 122.04499 28.166827 6769.9929 1.0116004e+08 0.028277794 0.086862515 122.11985 27.977651 6772.6810 96768059. 0.023272302 0.093382400 122.19332 27.792759 6775.3692 94028391. 0.018293633 0.099902285 122.25962 27.630013 6778.0573 89795817. 0.013303094 0.10642217 122.32870 27.448500 6780.7454 86854021. 0.0083419648 0.11294205 122.39793 27.265988 6783.4335 81031041. 0.0033158967 0.11946194 122.46423 27.103244 6786.1217 74646495. -0.0017557258 0.12598182 122.52685 26.940498 6788.8098 73835967. -0.0066479364 0.13250171 122.58713 26.777753 6791.4979 73402012. -0.011508137 0.13902159 122.65697 26.589170 6794.1860 71108761. -0.016421132 0.14554148 122.73103 26.399294 6796.8742 67792963. -0.021398661 0.15206136 122.80654 26.213013 6799.5623 66704107. -0.026316062 0.15858125 122.86681 26.056295 6802.2504 64464142. -0.031378283 0.16510113 122.93160 25.884677 6804.9385 63055301. -0.036523977 0.17162102 123.00165 25.695544 6807.6267 57092077. -0.042290838 0.17814090 123.06193 25.532798 6810.3148 52150173. -0.048561829 0.18466079 123.12590 25.360059 6813.0029 51045464. -0.055228262 0.19118067 123.19623 25.170184 6815.6910 49123533. -0.064804750 0.19770056 123.25704 25.005983 6818.3792 48039732. -0.096284237 0.20422044 123.32021 24.835453 6821.0673 46748844. -0.079638524 0.21074033 123.39051 24.645617 6823.7554 46009427. -0.035327904 0.21726021 123.45475 24.455747