# # 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 = 45.709306 km # Date (UTC) = 2012-02-03T09:49:40.084 # Date (julian) = 2455960.90949171 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.9837 1.3608505e+11 0.067270204 0.033484492 -15.088803 65.041376 6505.9837 1.1367699e+11 0.076134548 0.034087570 -15.612032 64.790224 6507.9836 9.8110887e+10 0.085363502 0.034690648 -16.041352 64.574293 6509.9836 8.5913486e+10 0.094873875 0.035293726 -16.464054 64.357971 6511.9835 7.5527627e+10 0.10454380 0.035896804 -16.962050 64.102526 6513.9835 6.6400192e+10 0.11437570 0.036499882 -17.444244 63.845737 6515.9834 5.9138975e+10 0.12455178 0.037102960 -17.856330 63.622040 6517.9833 5.3231872e+10 0.13502960 0.037706038 -18.233654 63.411107 6519.9833 4.9145866e+10 0.14603831 0.038309117 -18.660902 63.167151 6521.9832 4.4609102e+10 0.15705201 0.038912195 -18.998474 62.970889 6523.9832 4.0512276e+10 0.16247340 0.039422791 -19.443000 62.711954 6525.9831 3.6735671e+10 0.16686144 0.039670013 -19.772653 62.507881 6527.9831 3.2827423e+10 0.17212361 0.041430190 -20.170294 62.259815 6529.9830 2.9575433e+10 0.17621138 0.043801636 -20.510512 62.044797 6531.9830 2.6412621e+10 0.17880104 0.046659385 -20.878481 61.804345 6533.9829 2.3898874e+10 0.17958539 0.047937291 -21.227429 61.576262 6535.9828 2.1724812e+10 0.17893181 0.047797942 -21.531110 61.377661 6537.9828 1.9998651e+10 0.17975809 0.049148568 -21.829036 61.173650 6539.9827 1.8682192e+10 0.17917187 0.050833206 -22.119445 60.969578 6541.9827 1.7383266e+10 0.17631382 0.051007854 -22.409854 60.765507 6543.9826 1.6031523e+10 0.17363474 0.051639788 -22.741909 60.523568 6545.9826 1.4648031e+10 0.17119584 0.052464370 -23.064814 60.282424 6547.9825 1.3316111e+10 0.16986478 0.053660998 -23.339504 60.078369 6549.9825 1.2282920e+10 0.16831520 0.054967487 -23.614133 59.874358 6551.9824 1.1384994e+10 0.16632583 0.055580591 -23.881160 59.662607 6553.9824 1.0557832e+10 0.16371187 0.054841251 -24.142439 59.456260 6555.9823 9.7705586e+09 0.16149156 0.054028000 -24.401409 59.248848 6557.9822 9.1195019e+09 0.15969155 0.053250435 -24.652328 59.044530 6559.9822 8.6233090e+09 0.15714426 0.052276320 -24.859476 58.881323 6561.9821 8.2026262e+09 0.15404112 0.050888708 -25.091405 58.690691 6563.9821 7.7906465e+09 0.15065605 0.048792330 -25.340302 58.478771 6565.9820 7.3307640e+09 0.14811001 0.047203298 -25.583617 58.266850 6567.9820 6.8480205e+09 0.14633204 0.045786909 -25.826859 58.054994 6569.9819 6.3778146e+09 0.14448057 0.044916332 -26.064344 57.843090 6571.9819 5.9747466e+09 0.14218725 0.044235111 -26.277822 57.650960 6573.9818 5.6289176e+09 0.13914900 0.042869609 -26.466138 57.481474 6575.9817 5.3160236e+09 0.13637498 0.041389707 -26.688778 57.274930 6577.9817 4.9927158e+09 0.13351855 0.038678371 -26.916396 57.063010 6579.9816 4.6752148e+09 0.13043406 0.036530848 -27.127151 56.864889 6581.9816 4.3981886e+09 0.12722059 0.035299372 -27.302914 56.695406 6583.9815 4.1427317e+09 0.12419728 0.034524861 -27.510893 56.494854 6585.9815 3.9180719e+09 0.12168346 0.033186108 -27.707630 56.299495 6587.9814 3.6866057e+09 0.12018060 0.033375814 -27.877116 56.123730 6589.9814 3.4702117e+09 0.11837369 0.031099043 -28.083306 55.916694 6591.9813 3.2973517e+09 0.11602248 0.028094619 -28.270175 55.729827 6593.9813 3.0972801e+09 0.11391249 0.026189953 -28.439788 55.560175 6595.9812 2.9263229e+09 0.11140084 0.025725324 -28.643650 55.340685 6597.9811 2.7655390e+09 0.10972930 0.025413116 -28.818156 55.157298 6599.9811 2.5925093e+09 0.10910752 0.024988738 -28.985726 54.981184 6601.9810 2.4528795e+09 0.10857930 0.027507701 -29.181948 54.761417 6603.9810 2.3157523e+09 0.10708864 0.026082538 -29.344495 54.584743 6605.9809 2.2085139e+09 0.10668167 0.027487959 -29.499779 54.413590 6607.9809 2.1167042e+09 0.10441051 0.023770150 -29.650469 54.237786 6609.9808 2.0012188e+09 0.10155633 0.023997279 -29.831686 54.037780 6611.9808 1.8757426e+09 0.099231941 0.024333022 -30.007312 53.840230 6613.9807 1.7548666e+09 0.098267956 0.023933412 -30.151722 53.664427 6615.9806 1.6584584e+09 0.096640895 0.023281703 -30.301182 53.493672 6617.9806 1.5933180e+09 0.095749492 0.023764362 -30.450543 53.322818 6619.9805 1.5225302e+09 0.094775316 0.024762502 -30.594953 53.147014 6621.9805 1.4373832e+09 0.093360740 0.024764461 -30.761679 52.944043 6623.9804 1.3458216e+09 0.091349907 0.024855059 -30.927569 52.741618 6625.9804 1.2577693e+09 0.090177149 0.026567483 -31.065702 52.572092 6627.9803 1.1892496e+09 0.088275437 0.025695492 -31.203834 52.397847 6629.9803 1.1287846e+09 0.086874312 0.025931870 -31.341960 52.222050 6631.9802 1.0733843e+09 0.085225016 0.026030335 -31.480060 52.046289 6633.9802 1.0225521e+09 0.084026652 0.026323378 -31.614624 51.870502 6635.9801 9.7319981e+08 0.082920750 0.026546768 -31.746477 51.694696 6637.9800 9.2657999e+08 0.082254281 0.025681416 -31.878329 51.518893 6639.9800 8.8324664e+08 0.082314932 0.025277805 -32.010171 51.345493 6641.9799 8.4655685e+08 0.082557476 0.025151628 -32.141993 51.176006 6643.9799 8.1472431e+08 0.081657213 0.025340568 -32.273841 51.001545 6645.9798 7.8215235e+08 0.080848263 0.025910695 -32.404472 50.825741 6647.9798 7.4608665e+08 0.080074021 0.026953632 -32.530047 50.649938 6649.9797 7.1105480e+08 0.079451401 0.026283201 -32.655603 50.474158 6651.9797 6.7993224e+08 0.078952890 0.027234932 -32.781146 50.298394 6653.9796 6.5597292e+08 0.078305958 0.028025812 -32.906720 50.122590 6655.9795 6.3070759e+08 0.076644284 0.028014967 -33.029680 49.946787 6657.9795 6.0651821e+08 0.075313448 0.030037292 -33.148975 49.770983 6659.9794 5.8172157e+08 0.073952485 0.031630286 -33.268248 49.595212 6661.9794 5.5541955e+08 0.072509443 0.033033771 -33.387523 49.419439 6663.9793 5.3274488e+08 0.071169036 0.032211817 -33.506820 49.243634 6665.9793 5.0604508e+08 0.071283209 0.026942556 -33.626116 49.067830 6667.9792 4.8154890e+08 0.070589679 0.027463142 -33.745129 48.892026 6669.9792 4.5632685e+08 0.069992158 0.027350033 -33.858144 48.716220 6671.9791 4.3425728e+08 0.069705927 0.026879302 -33.971147 48.540434 6673.9791 4.1637695e+08 0.068972130 0.028923464 -34.084137 48.364673 6675.9790 4.0284278e+08 0.066917779 0.031673499 -34.180956 48.214068 6677.9789 3.8890038e+08 0.066147880 0.030966548 -34.275133 48.067570 6679.9789 3.6828305e+08 0.066541349 0.029458862 -34.387177 47.893279 6681.9788 3.4720368e+08 0.067474348 0.030408304 -34.497952 47.717489 6683.9788 3.2634360e+08 0.067943165 0.032622992 -34.604666 47.541727 6685.9787 3.0928928e+08 0.067714063 0.033738611 -34.711399 47.365932 6687.9787 2.9325931e+08 0.065714561 0.033797087 -34.818137 47.190127 6689.9786 2.7546042e+08 0.064152944 0.033135115 -34.924877 47.014321 6691.9786 2.6536551e+08 0.063359662 0.032770388 -35.021344 46.855434 6693.9785 2.6106603e+08 0.062595482 0.031268401 -35.110288 46.708937 6695.9784 2.5560625e+08 0.062690339 0.029679744 -35.211066 46.542951 6697.9784 2.4682157e+08 0.062158705 0.030215083 -35.317324 46.367186 6699.9783 2.3314074e+08 0.060964755 0.030687706 -35.417784 46.191380 6701.9783 2.2235162e+08 0.059565073 0.032844866 -35.518243 46.015575 6703.9782 2.1230840e+08 0.060141967 0.036123075 -35.618703 45.839772 6705.9782 2.0527250e+08 0.060352084 0.038407602 -35.704299 45.689979 6707.9781 1.9820147e+08 0.060229062 0.040046712 -35.788012 45.543481 6709.9781 1.9227313e+08 0.059305455 0.040510447 -35.888051 45.368411 6711.9780 1.8705484e+08 0.057414378 0.041804939 -35.986090 45.192631 6713.9780 1.7464359e+08 0.055645764 0.047223672 -36.080269 45.016828 6715.9779 1.6239135e+08 0.054324711 0.048378755 -36.179413 44.841024 6717.9778 1.5276985e+08 0.052581795 0.049813784 -36.275525 44.671018 6719.9778 1.4572466e+08 0.051595423 0.050440869 -36.354007 44.524519 6721.9777 1.4404565e+08 0.051695651 0.050598495 -36.436981 44.369635 6723.9777 1.3953036e+08 0.049828310 0.049914212 -36.531140 44.193873 6725.9776 1.3447292e+08 0.046081476 0.040965345 -36.625313 44.018083 6727.9776 1.2932028e+08 0.045373602 0.039657984 -36.717383 43.845233 6729.9775 1.2708534e+08 0.044017516 0.040393890 -36.790631 43.698736 6731.9775 1.2263141e+08 0.042302474 0.043695349 -36.867843 43.546693 6733.9774 1.1885469e+08 0.041157268 0.049230920 -36.962003 43.370927 6735.9773 1.1426366e+08 0.042562100 0.050330960 -37.052430 43.195139 6737.9773 1.0585798e+08 0.043533071 0.057248760 -37.140241 43.019518 6739.9772 1.0119986e+08 0.043099343 0.064022507 -37.213525 42.872949 6741.9772 97220405. 0.040767757 0.068545678 -37.288129 42.723741 6743.9771 95033605. 0.035933682 0.077639126 -37.376031 42.547935 6745.9771 90525288. 0.034629555 0.078977640 -37.463923 42.372151 6747.9770 85462139. 0.030156528 0.067024811 -37.551806 42.196390 6749.9770 80780149. 0.027166697 0.072010439 -37.626420 42.047164 6751.9769 77810396. 0.024055143 0.074124714 -37.699671 41.900658 6753.9769 73601873. 0.022505221 0.076138568 -37.781254 41.724994 6755.9768 71814232. 0.019597427 0.074177081 -37.859505 41.560993 6757.9767 69500292. 0.017966854 0.073775898 -37.932754 41.414494 6759.9767 70774950. 0.016589285 0.076055646 -38.010109 41.253613 6761.9766 67510437. 0.0058003941 0.078048914 -38.091711 41.077852 6763.9766 59459125. 0.020056056 0.079411957 -38.173333 40.902050 6765.9765 53346703. 0.052747602 0.079709461 -38.250797 40.735206