# # 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 = 53.230729 km # Date (UTC) = 2015-12-29T09:40:54.541 # Date (julian) = 2457385.90340904 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.8850 7.1241708e+10 0.049707569 0.032550085 111.46272 29.961902 6503.2582 6.0621339e+10 0.059566444 0.033265705 111.52480 29.842168 6505.6313 5.2569558e+10 0.069730545 0.033981326 111.58274 29.730423 6508.0045 4.6529747e+10 0.080353548 0.034696947 111.64068 29.618679 6510.3777 4.1722653e+10 0.091461772 0.035412568 111.69863 29.506935 6512.7508 3.7432804e+10 0.10295050 0.036128189 111.75657 29.395190 6515.1240 3.3580972e+10 0.11482663 0.036843809 111.81451 29.280980 6517.4972 3.0095787e+10 0.12707601 0.037559430 111.87245 29.165096 6519.8703 2.7033995e+10 0.13973233 0.038275051 111.92965 29.049953 6522.2435 2.4427313e+10 0.15217427 0.038981009 111.98346 28.938193 6524.6166 2.2121221e+10 0.15936269 0.039646025 112.03727 28.826434 6526.9898 2.0094086e+10 0.16554937 0.040705781 112.09424 28.714686 6529.3630 1.8269847e+10 0.16994962 0.042813958 112.15218 28.602942 6531.7361 1.6602276e+10 0.17441064 0.046300123 112.20869 28.491197 6534.1093 1.5179051e+10 0.17690755 0.047975130 112.26249 28.379453 6536.4825 1.3915142e+10 0.17784730 0.048222165 112.31629 28.267708 6538.8556 1.2676946e+10 0.17851398 0.049573321 112.37635 28.142957 6541.2288 1.1471560e+10 0.17745020 0.051252338 112.43688 28.017241 6543.6019 1.0323371e+10 0.17510112 0.051539875 112.49215 27.902458 6545.9751 9.3636747e+09 0.17188820 0.052464303 112.54596 27.790698 6548.3483 8.6184789e+09 0.16960642 0.053771650 112.60129 27.678944 6550.7214 7.9754765e+09 0.16710184 0.055165999 112.65923 27.567200 6553.0946 7.4014669e+09 0.16499551 0.055287519 112.71717 27.455456 6555.4678 6.8571236e+09 0.16233961 0.054460342 112.76724 27.343712 6557.8409 6.3663420e+09 0.15978471 0.053339020 112.81690 27.231967 6560.2141 5.9366548e+09 0.15674695 0.052081292 112.86878 27.120222 6562.5872 5.5515362e+09 0.15348758 0.050321125 112.92258 27.008477 6564.9604 5.1961557e+09 0.15063619 0.048336344 112.97639 26.896731 6567.3336 4.8837080e+09 0.14794963 0.046335152 113.03020 26.784971 6569.7067 4.5982664e+09 0.14569473 0.044898421 113.08401 26.673212 6572.0799 4.3178116e+09 0.14347548 0.044184407 113.14254 26.551645 6574.4530 4.0243360e+09 0.14061491 0.042637407 113.20307 26.425931 6576.8262 3.7255950e+09 0.13788506 0.040420407 113.25757 26.307971 6579.1994 3.4658553e+09 0.13445040 0.036960893 113.30723 26.196226 6581.5725 3.2423761e+09 0.13152880 0.035423237 113.35747 26.084481 6583.9457 3.0393938e+09 0.12853914 0.034542996 113.41128 25.972737 6586.3189 2.8610391e+09 0.12559301 0.033167174 113.46508 25.860992 6588.6920 2.6948689e+09 0.12278201 0.033148828 113.51589 25.752238 6591.0652 2.5471413e+09 0.11904607 0.029128357 113.56555 25.644632 6593.4383 2.4201799e+09 0.11546325 0.026694691 113.61649 25.535753 6595.8115 2.3014308e+09 0.11139985 0.025707727 113.67030 25.423994 6598.1847 2.1903992e+09 0.10851201 0.025318997 113.72411 25.312234 6600.5578 2.0641262e+09 0.10770244 0.026136677 113.77976 25.188048 6602.9310 1.9295001e+09 0.10701773 0.026722159 113.83563 25.062333 6605.3042 1.8022720e+09 0.10651205 0.026920207 113.88689 24.946996 6607.6773 1.6917667e+09 0.10494497 0.024369543 113.93656 24.835251 6610.0505 1.6047836e+09 0.10194706 0.024051213 113.98622 24.724858 6612.4236 1.5260064e+09 0.099846210 0.024004221 114.03588 24.617252 6614.7968 1.4496715e+09 0.098841257 0.023391524 114.08554 24.509646 6617.1700 1.3660822e+09 0.097619280 0.023495602 114.14086 24.385554 6619.5431 1.2763390e+09 0.097198693 0.024656963 114.19674 24.259839 6621.9163 1.1952545e+09 0.096260509 0.024785737 114.24788 24.147924 6624.2895 1.1291506e+09 0.094462231 0.025017254 114.29755 24.040304 6626.6626 1.0711687e+09 0.092793733 0.025746667 114.34722 23.931253 6629.0358 1.0182284e+09 0.091386757 0.026102636 114.39688 23.819510 6631.4089 9.6772019e+08 0.089547272 0.025972306 114.44655 23.707766 6633.7821 9.2328659e+08 0.087891380 0.026288800 114.49236 23.596021 6636.1553 8.8318150e+08 0.086114584 0.026489456 114.53788 23.484277 6638.5284 8.3905521e+08 0.084835640 0.025648620 114.58873 23.367742 6640.9016 7.9294666e+08 0.085086306 0.025160341 114.64461 23.246682 6643.2748 7.4607812e+08 0.084431011 0.025234103 114.69821 23.129032 6645.6479 7.0413948e+08 0.083095762 0.025755209 114.74788 23.017273 6648.0211 6.6640865e+08 0.081806117 0.026978394 114.79755 22.905513 6650.3942 6.2833429e+08 0.080958268 0.026345490 114.84869 22.784913 6652.7674 5.9145577e+08 0.080616719 0.027461664 114.89991 22.663855 6655.1406 5.5813137e+08 0.079610658 0.027668298 114.94988 22.550275 6657.5137 5.3027880e+08 0.077992144 0.029497018 114.99954 22.438531 6659.8869 5.1089490e+08 0.076674671 0.031649592 115.04760 22.328388 6662.2601 4.9058409e+08 0.075303545 0.032898367 115.09313 22.220781 6664.6332 4.7086582e+08 0.074475273 0.029889186 115.13866 22.113175 6667.0064 4.4499626e+08 0.074426845 0.027105800 115.18971 21.992513 6669.3795 4.1798917e+08 0.073566564 0.027965891 115.24092 21.871454 6671.7527 3.9724370e+08 0.073672711 0.026876075 115.28746 21.758047 6674.1259 3.7776667e+08 0.072915468 0.029060964 115.33299 21.646287 6676.4990 3.6639606e+08 0.070502010 0.032035343 115.38273 21.530744 6678.8722 3.4796997e+08 0.069661120 0.030353258 115.43861 21.409686 6681.2453 3.2797245e+08 0.070821938 0.029845586 115.49180 21.292113 6683.6185 3.1012023e+08 0.071357328 0.032095016 115.53732 21.184508 6685.9917 2.9292629e+08 0.070910858 0.033752289 115.58285 21.076902 6688.3648 2.8192578e+08 0.068045726 0.033869407 115.63317 20.957956 6690.7380 2.6601166e+08 0.066452853 0.033031288 115.68439 20.836896 6693.1112 2.5331882e+08 0.065513800 0.031565954 115.73165 20.722313 6695.4843 2.4365660e+08 0.064909899 0.029770509 115.77717 20.610569 6697.8575 2.3426553e+08 0.064085210 0.030199781 115.82299 20.496227 6700.2306 2.2664152e+08 0.062254275 0.030838796 115.86955 20.375168 6702.6038 2.1434055e+08 0.061135873 0.033358875 115.91673 20.254110 6704.9770 2.0667899e+08 0.061491280 0.036657298 115.96794 20.133051 6707.3501 1.9614093e+08 0.061271599 0.040136670 116.01915 20.011993 6709.7233 1.8780848e+08 0.060477285 0.040672492 116.06478 19.904151 6712.0965 1.7787732e+08 0.058394318 0.042009049 116.11031 19.796530 6714.4696 1.7057149e+08 0.056283834 0.047338714 116.15907 19.681281 6716.8428 1.6402688e+08 0.054284875 0.049642702 116.21029 19.560223 6719.2159 1.5711154e+08 0.052036990 0.051164675 116.25955 19.439164 6721.5891 1.5101864e+08 0.052445941 0.050481400 116.30611 19.318105 6723.9623 1.4217749e+08 0.050564817 0.049905618 116.35394 19.197047 6726.3354 1.3884451e+08 0.046521338 0.040954393 116.40516 19.075988 6728.7086 1.3039416e+08 0.045944522 0.040632409 116.45515 18.956604 6731.0818 1.2270377e+08 0.044104726 0.041912734 116.49654 18.848998 6733.4549 1.1782440e+08 0.042737922 0.046394190 116.53793 18.741391 6735.8281 1.1152263e+08 0.043818788 0.050172501 116.58628 18.624258 6738.2012 1.0932775e+08 0.045095842 0.058429024 116.63750 18.503200 6740.5744 1.0808947e+08 0.044344819 0.065031634 116.68611 18.382132 6742.9476 1.0316424e+08 0.040685139 0.070919677 116.73267 18.261055 6745.3207 98603620. 0.037184933 0.078701718 116.78116 18.139986 6747.6939 93225050. 0.032658524 0.067122281 116.83238 18.018927 6750.0671 88815597. 0.029882192 0.072118629 116.88236 17.897869 6752.4402 86317725. 0.026875575 0.073625064 116.92892 17.776810 6754.8134 84276381. 0.025054326 0.074905457 116.97548 17.655751 6757.1865 82068629. 0.022223574 0.076173956 117.02204 17.534692 6759.5597 76415574. 0.023011974 0.075955020 117.06860 17.413633 6761.9329 73339333. 0.026290954 0.078045298 117.11516 17.297091 6764.3060 69531621. 0.029468739 0.079497946 117.16172 17.180688 6766.6792 67778225. 0.030108804 0.081250086 117.20828 17.060457 6769.0524 69809697. 0.025238267 0.084581236 117.25484 16.939399 6771.4255 65973443. 0.020597049 0.090337198 117.30141 16.818340 6773.7987 61352975. 0.015828766 0.096093160 117.34797 16.697281 6776.1718 56554783. 0.010922962 0.10184912 117.39453 16.576222 6778.5450 56191298. 0.0063771764 0.10760508 117.44109 16.455163 6780.9182 55306241. 0.0017124361 0.11336105 117.48765 16.335869 6783.2913 52663487. -0.0033168765 0.11911701 117.53421 16.219467 6785.6645 49304196. -0.0087486741 0.12487297 117.58231 16.097985 6788.0376 47204040. -0.014407190 0.13062893 117.63553 15.959630 6790.4108 45839002. -0.020591046 0.13638489 117.68640 15.827360 6792.7840 46738828. -0.027351768 0.14214085 117.73297 15.706283 6795.1571 44834891. -0.038674659 0.14789682 117.77953 15.586163 6797.5303 44521958. -0.081485713 0.15365278 117.82610 15.469761 6799.9035 45654705. -0.051730146 0.15940874 117.87304 15.352106 6802.2766 41777104. 0.013847616 0.16516470 117.92625 15.213751