# # 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 = 50.842408 km # Date (UTC) = 2016-01-21T09:41:00.782 # Date (julian) = 2457408.90348128 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.4951 6.5034289e+10 0.064236659 0.033638684 109.07949 42.058577 6506.7689 5.8258468e+10 0.074232407 0.034324362 109.17126 41.915813 6509.0428 5.3580933e+10 0.084821171 0.035010039 109.26065 41.773050 6511.3167 4.9793177e+10 0.095865315 0.035695717 109.34733 41.630287 6513.5905 4.5841728e+10 0.10709633 0.036381394 109.44134 41.475440 6515.8644 4.1877812e+10 0.11851938 0.037067072 109.54247 41.308876 6518.1382 3.7881679e+10 0.13010107 0.037752749 109.63165 41.161986 6520.4121 3.4618899e+10 0.14211361 0.038438427 109.71833 41.019223 6522.6860 3.1963015e+10 0.15267465 0.039096881 109.80501 40.876459 6524.9598 2.9630831e+10 0.15974545 0.039767946 109.89169 40.733696 6527.2337 2.7537055e+10 0.16480382 0.040886138 109.97375 40.590931 6529.5076 2.5468864e+10 0.16893616 0.043044286 110.05533 40.448166 6531.7814 2.3275428e+10 0.17269588 0.046366053 110.15532 40.282996 6534.0553 2.1066405e+10 0.17455900 0.047960024 110.25133 40.122680 6536.3292 1.8989232e+10 0.17502252 0.048085003 110.33291 39.979917 6538.6030 1.7259376e+10 0.17613839 0.049450318 110.41448 39.837153 6540.8769 1.5861694e+10 0.17574838 0.051268363 110.49607 39.694387 6543.1507 1.4619331e+10 0.17425639 0.051421457 110.57765 39.549895 6545.4246 1.3469584e+10 0.17219350 0.052459371 110.65922 39.402034 6547.6985 1.2441063e+10 0.16996664 0.053552980 110.73888 39.256097 6549.9723 1.1495843e+10 0.16798959 0.054957165 110.81536 39.113332 6552.2462 1.0665305e+10 0.16579723 0.055524799 110.89396 38.970567 6554.5201 9.9164716e+09 0.16333935 0.054843293 110.97554 38.827804 6556.7939 9.2027948e+09 0.16102036 0.053896404 111.05480 38.685040 6559.0678 8.5424546e+09 0.15817630 0.052379530 111.13128 38.542277 6561.3417 7.9287567e+09 0.15539689 0.051204323 111.20776 38.399513 6563.6155 7.3762213e+09 0.15266071 0.049216360 111.28424 38.256747 6565.8894 6.8842453e+09 0.15016848 0.047308498 111.36072 38.113983 6568.1632 6.4325129e+09 0.14848600 0.045621606 111.43720 37.971220 6570.4371 6.0183804e+09 0.14678977 0.044736446 111.51369 37.828457 6572.7110 5.6392153e+09 0.14481986 0.043823003 111.59017 37.685693 6574.9848 5.2795574e+09 0.14254682 0.042381994 111.66665 37.542929 6577.2587 4.9515436e+09 0.13980539 0.039814027 111.74312 37.400163 6579.5326 4.6449039e+09 0.13679001 0.036777727 111.81960 37.257399 6581.8064 4.3653567e+09 0.13410367 0.035352414 111.89609 37.114636 6584.0803 4.1158199e+09 0.13128566 0.034471777 111.96906 36.971873 6586.3541 3.8812498e+09 0.12859655 0.033166718 112.04044 36.829110 6588.6280 3.6646560e+09 0.12604329 0.033170204 112.11183 36.690047 6590.9019 3.4595780e+09 0.12263761 0.029384439 112.18321 36.552382 6593.1757 3.2618301e+09 0.11943848 0.026938838 112.25849 36.410817 6595.4496 3.0753524e+09 0.11577401 0.025670196 112.33497 36.268054 6597.7235 2.9093452e+09 0.11273056 0.025494429 112.40735 36.125289 6599.9973 2.7565520e+09 0.11148195 0.024989714 112.47874 35.982523 6602.2712 2.6127228e+09 0.11087333 0.027285210 112.55012 35.839760 6604.5451 2.4758624e+09 0.10986269 0.026394912 112.62150 35.696997 6606.8189 2.3424016e+09 0.10913383 0.026032394 112.68839 35.554234 6609.0928 2.2231668e+09 0.10617718 0.023733492 112.75468 35.411470 6611.3666 2.1099722e+09 0.10346368 0.024724645 112.82565 35.268705 6613.6405 1.9982530e+09 0.10256906 0.023808594 112.89703 35.125939 6615.9144 1.8982242e+09 0.10107144 0.023279664 112.96353 34.983176 6618.1882 1.7961635e+09 0.10050783 0.023912936 113.02982 34.840413 6620.4621 1.7068786e+09 0.099754590 0.024916108 113.10117 34.697650 6622.7360 1.6257087e+09 0.098294316 0.024562104 113.17237 34.555069 6625.0098 1.5449028e+09 0.096766574 0.025409329 113.23866 34.417403 6627.2837 1.4744445e+09 0.094586278 0.025426395 113.30494 34.279357 6629.5576 1.4042294e+09 0.093282294 0.026008298 113.37123 34.136592 6631.8314 1.3381878e+09 0.091335104 0.026015221 113.43751 33.993827 6634.1053 1.2783785e+09 0.089600556 0.026334522 113.50379 33.851064 6636.3791 1.2157682e+09 0.087897533 0.026402516 113.57007 33.708301 6638.6530 1.1601681e+09 0.086530145 0.025643193 113.63636 33.565538 6640.9269 1.1038601e+09 0.086735233 0.025157248 113.70264 33.423747 6643.2007 1.0512210e+09 0.085945873 0.025222927 113.76893 33.286080 6645.4746 1.0030299e+09 0.084568973 0.025674015 113.83521 33.147245 6647.7485 9.5225114e+08 0.083352068 0.026831847 113.90149 33.004482 6650.0223 9.1012684e+08 0.082586909 0.026260347 113.96640 32.861718 6652.2962 8.6706334e+08 0.082228846 0.027332014 114.02759 32.718953 6654.5700 8.2514659e+08 0.081560506 0.027793379 114.09034 32.576188 6656.8439 7.8824322e+08 0.079828117 0.028764115 114.15662 32.433425 6659.1178 7.4880903e+08 0.078447217 0.031810030 114.22114 32.292424 6661.3916 7.0951656e+08 0.077306182 0.032734420 114.28233 32.154758 6663.6655 6.7597843e+08 0.076109820 0.032298786 114.34057 32.021993 6665.9394 6.4530400e+08 0.076127638 0.027007945 114.39411 31.897077 6668.2132 6.1945059e+08 0.075374276 0.027659468 114.44874 31.770340 6670.4871 6.0073049e+08 0.074947930 0.027102970 114.50992 31.632675 6672.7610 5.7461172e+08 0.074661939 0.027320663 114.57110 31.494084 6675.0348 5.4768147e+08 0.073193637 0.029865050 114.63229 31.351320 6677.3087 5.1898695e+08 0.071178040 0.031919392 114.69348 31.208556 6679.5825 4.9119974e+08 0.071029296 0.029786381 114.75466 31.065792 6681.8564 4.6670803e+08 0.071932709 0.030314383 114.81585 30.924348 6684.1303 4.4217341e+08 0.072154956 0.032660703 114.87703 30.786684 6686.4041 4.1777819e+08 0.071199640 0.033996217 114.93821 30.647501 6688.6780 3.9296870e+08 0.068334134 0.033941696 114.99940 30.504736 6690.9519 3.7565429e+08 0.066969859 0.033006779 115.06059 30.363686 6693.2257 3.5900963e+08 0.065944029 0.031526650 115.12177 30.226021 6695.4996 3.4664638e+08 0.065308777 0.029767705 115.18104 30.086443 6697.7735 3.3462862e+08 0.064477416 0.030189147 115.23712 29.943680 6700.0473 3.1824565e+08 0.062878670 0.030702815 115.29532 29.803027 6702.3212 3.0601196e+08 0.061431196 0.033133194 115.35650 29.665361 6704.5950 2.9420495e+08 0.061788229 0.036469751 115.41538 29.525389 6706.8689 2.8366676e+08 0.061501391 0.039958670 115.47147 29.382624 6709.1428 2.7142196e+08 0.060832271 0.041041734 115.52755 29.242365 6711.4166 2.5697127e+08 0.058883264 0.041166248 115.58364 29.104700 6713.6905 2.4330849e+08 0.056602299 0.046184006 115.63973 28.967035 6715.9644 2.3320326e+08 0.054618853 0.048364909 115.69581 28.829369 6718.2382 2.2450636e+08 0.052216090 0.050183431 115.75480 28.688804 6720.5121 2.1193677e+08 0.051447490 0.050360432 115.81598 28.546040 6722.7860 2.0247300e+08 0.050630331 0.049633564 115.87407 28.406373 6725.0598 1.9327020e+08 0.046132355 0.041538657 115.93015 28.268708 6727.3337 1.8623134e+08 0.044437686 0.040515831 115.98295 28.127748 6729.6075 1.8235673e+08 0.043410786 0.040640486 116.03394 27.984985 6731.8814 1.7497262e+08 0.041339985 0.043504183 116.08841 27.845729 6734.1553 1.6719488e+08 0.040169237 0.049344257 116.14449 27.708086 6736.4291 1.6109144e+08 0.041765561 0.051977364 116.20057 27.570427 6738.7030 1.5238502e+08 0.042515628 0.061191403 116.25665 27.432762 6740.9769 1.4498946e+08 0.041256675 0.065719157 116.31274 27.295097 6743.2507 1.4098716e+08 0.037102658 0.072738804 116.36882 27.157431 6745.5246 1.3356519e+08 0.034195079 0.078787418 116.42763 26.996628 6747.7984 1.2798208e+08 0.029774269 0.067086286 116.48672 26.833524 6750.0723 1.2223031e+08 0.027051899 0.072127608 116.54280 26.695859 6752.3462 1.1662385e+08 0.024196229 0.073733887 116.59807 26.558194 6754.6200 1.1495695e+08 0.022823378 0.075216371 116.64906 26.420528 6756.8939 1.0946655e+08 0.019954254 0.076467052 116.70106 26.282863 6759.1678 1.0398523e+08 0.020873757 0.075860439 116.75714 26.145198 6761.4416 97722151. 0.022642200 0.078004712 116.81203 26.007532 6763.7155 92961066. 0.027194504 0.078616812 116.86301 25.869867 6765.9894 90415750. 0.029355820 0.079711804 116.91400 25.732202 6768.2632 87378260. 0.026049331 0.081803151 116.96499 25.594536 6770.5371 85805357. 0.021633146 0.088182362 117.02050 25.447818 6772.8109 82828436. 0.017641212 0.093697481 117.08594 25.281255 6775.0848 78729300. 0.013552165 0.099212599 117.14224 25.132963 6777.3587 73061880. 0.0092969590 0.10472772 117.19322 24.995298 6779.6325 68426778. 0.0050188394 0.11024284 117.24421 24.857633 6781.9064 67672910. 0.00095688728 0.11575795 117.29520 24.719966 6784.1803 68871445. -0.0030721061 0.12127307 117.34618 24.582301 6786.4541 69257242. -0.0073682610 0.12678819 117.39717 24.444635 6788.7280 64986028. -0.012461173 0.13230331 117.45007 24.289795 6791.0019 58451603. -0.018641601 0.13781843 117.50343 24.130727 6793.2757 54572589. -0.025961575 0.14333355 117.55442 23.993062 6795.5496 49530020. -0.037854224 0.14884867 117.60631 23.852964 6797.8234 48139717. -0.082238213 0.15436378 117.66579 23.692350 6800.0973 47169721. -0.053687703 0.15987890 117.72167 23.541489 6802.3712 47662485. 0.014541981 0.16539402 117.77266 23.403824