# # 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 = 51.251898 km # Date (UTC) = 2013-01-01T09:59:50.644 # Date (julian) = 2456293.91655838 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.2713 5.8456649e+10 0.047422919 0.032666564 103.55952 36.017688 6503.3788 5.4808040e+10 0.056726349 0.033302068 103.61949 35.916486 6505.4862 5.1273865e+10 0.066366181 0.033937571 103.67830 35.817251 6507.5937 4.8376704e+10 0.076495400 0.034573075 103.73849 35.716519 6509.7012 4.5233633e+10 0.086847899 0.035208578 103.80878 35.604878 6511.8087 4.1917287e+10 0.097420659 0.035844082 103.87907 35.493238 6513.9161 3.8687645e+10 0.10828251 0.036479585 103.93872 35.390310 6516.0236 3.6064248e+10 0.11966572 0.037115089 103.99385 35.291075 6518.1311 3.3762628e+10 0.13146481 0.037750592 104.04898 35.191841 6520.2386 3.1344272e+10 0.14345642 0.038386096 104.11493 35.080430 6522.3460 2.8860315e+10 0.15466295 0.039007866 104.18109 34.968790 6524.4535 2.6410141e+10 0.16127382 0.039588075 104.24311 34.864127 6526.5610 2.4341720e+10 0.16671433 0.040256222 104.30192 34.764881 6528.6685 2.2579397e+10 0.17151592 0.041972780 104.36074 34.665635 6530.7759 2.0879784e+10 0.17541984 0.044915003 104.42225 34.559430 6532.8834 1.9195206e+10 0.17929709 0.047422195 104.48427 34.451923 6534.9909 1.7604420e+10 0.18090387 0.048221749 104.54493 34.347924 6537.0984 1.6251675e+10 0.18070432 0.048731603 104.60374 34.248690 6539.2058 1.5136996e+10 0.17959709 0.049892796 104.66254 34.149455 6541.3133 1.4086792e+10 0.17759380 0.051224922 104.72361 34.041497 6543.4208 1.3021211e+10 0.17517218 0.051492332 104.78564 33.929857 6545.5283 1.1988031e+10 0.17287309 0.052460300 104.84570 33.821748 6547.6357 1.1107883e+10 0.17094387 0.053529126 104.90083 33.722515 6549.7432 1.0398105e+10 0.16892717 0.054723679 104.95596 33.623282 6551.8507 9.7438354e+09 0.16688921 0.055534358 105.01497 33.517053 6553.9582 9.0682911e+09 0.16424133 0.054853408 105.07699 33.405413 6556.0656 8.4104936e+09 0.16186860 0.054003475 105.13748 33.296108 6558.1731 7.8460424e+09 0.15982491 0.053091786 105.18894 33.200536 6560.2806 7.3861576e+09 0.15701297 0.052021318 105.24040 33.104963 6562.3881 6.9740938e+09 0.15399653 0.050510642 105.29635 33.002564 6564.4955 6.5291277e+09 0.15101368 0.048547017 105.35837 32.890923 6566.6030 6.0891811e+09 0.14855042 0.046841758 105.42033 32.779401 6568.7105 5.6975266e+09 0.14626275 0.045118549 105.47548 32.680128 6570.8180 5.3817534e+09 0.14420614 0.044578679 105.53061 32.580893 6572.9254 5.1072255e+09 0.14183027 0.043700178 105.58653 32.478116 6575.0329 4.8103886e+09 0.13914183 0.042341679 105.64442 32.366477 6577.1404 4.5073683e+09 0.13608839 0.039999847 105.70231 32.254838 6579.2479 4.2203648e+09 0.13260558 0.036934233 105.75462 32.157142 6581.3553 3.9896835e+09 0.12944598 0.035489006 105.80607 32.061582 6583.4628 3.7913799e+09 0.12639658 0.034787408 105.85847 31.963671 6585.5703 3.5778015e+09 0.12346042 0.033514836 105.91635 31.852030 6587.6778 3.3673214e+09 0.12125424 0.033308537 105.97424 31.740389 6589.7852 3.1637022e+09 0.11911867 0.031488124 106.02745 31.637768 6591.8927 2.9992912e+09 0.11677813 0.028194580 106.07891 31.538522 6594.0002 2.8574739e+09 0.11454942 0.026172417 106.13044 31.439192 6596.1077 2.7113377e+09 0.11200164 0.025726784 106.18831 31.331709 6598.2151 2.5630325e+09 0.11035589 0.025304448 106.24619 31.224204 6600.3226 2.4231242e+09 0.10991930 0.025653122 106.30030 31.121568 6602.4301 2.3085823e+09 0.10923998 0.027149608 106.35175 31.022334 6604.5376 2.2063754e+09 0.10808121 0.026390468 106.40321 30.923099 6606.6450 2.1013124e+09 0.10725814 0.026344838 106.46025 30.816686 6608.7525 1.9822072e+09 0.10457438 0.023712475 106.51814 30.709180 6610.8600 1.8710270e+09 0.10171113 0.024824684 106.57148 30.605392 6612.9675 1.7766691e+09 0.10059948 0.023597895 106.61926 30.506158 6615.0749 1.7014077e+09 0.099280108 0.023253837 106.66704 30.406923 6617.1824 1.6260310e+09 0.097879886 0.023499730 106.72219 30.301651 6619.2899 1.5394400e+09 0.097159856 0.024595861 106.78008 30.194130 6621.3974 1.4557664e+09 0.096189955 0.024957736 106.83484 30.089183 6623.5048 1.3822769e+09 0.094430837 0.024678863 106.88262 29.989948 6625.6123 1.3229393e+09 0.093025162 0.026128286 106.93039 29.890714 6627.7198 1.2671010e+09 0.090989666 0.025594856 106.98170 29.786601 6629.8273 1.2053357e+09 0.089549340 0.025959532 107.03545 29.679096 6631.9347 1.1383070e+09 0.087703978 0.026025717 107.08881 29.573007 6634.0422 1.0800479e+09 0.086228335 0.026329922 107.14027 29.473773 6636.1497 1.0332710e+09 0.084892156 0.026491620 107.19172 29.374538 6638.2572 9.9016884e+08 0.084137608 0.025660438 107.24421 29.271578 6640.3646 9.4838325e+08 0.084503769 0.025226037 107.29796 29.164072 6642.4721 8.9934259e+08 0.084695923 0.025171016 107.35152 29.056830 6644.5796 8.5634703e+08 0.083951604 0.025406248 107.39931 28.957583 6646.6871 8.1913226e+08 0.083057776 0.026275798 107.44710 28.858336 6648.7945 7.8707472e+08 0.082044775 0.027496156 107.49546 28.756517 6650.9020 7.5348708e+08 0.081775634 0.026461735 107.54507 28.649012 6653.0095 7.1783754e+08 0.081570342 0.027530510 107.59469 28.541506 6655.1170 6.8034981e+08 0.080484159 0.027658549 107.64800 28.434001 6657.2244 6.4139964e+08 0.078850297 0.029161462 107.70175 28.326495 6659.3319 6.0978910e+08 0.077500570 0.031765359 107.75267 28.222914 6661.4394 5.8314698e+08 0.076240364 0.032758744 107.80045 28.123679 6663.5469 5.6166986e+08 0.075004509 0.032331661 107.84823 28.024445 6665.6543 5.4269732e+08 0.074787452 0.027474961 107.89740 27.918977 6667.7618 5.1584209e+08 0.074240115 0.027383288 107.94702 27.811471 6669.8693 4.8844428e+08 0.073630350 0.027462874 107.99602 27.707970 6671.9768 4.6788720e+08 0.073405363 0.026879268 108.04380 27.612411 6674.0842 4.4850298e+08 0.072563411 0.029025858 108.09157 27.516852 6676.1917 4.3414875e+08 0.070266869 0.031837288 108.14049 27.413944 6678.2992 4.1899428e+08 0.069326823 0.030736498 108.19011 27.306423 6680.4067 4.0092275e+08 0.069854964 0.029529234 108.23974 27.198093 6682.5141 3.8377549e+08 0.070666800 0.030817371 108.28936 27.086453 6684.6216 3.6901870e+08 0.070864312 0.032685636 108.33897 26.974814 6686.7291 3.5083382e+08 0.069809015 0.034185284 108.39181 26.866389 6688.8366 3.3496318e+08 0.067289796 0.033978300 108.44556 26.758883 6690.9440 3.2038797e+08 0.066467304 0.033007675 108.49585 26.655669 6693.0515 3.0600880e+08 0.065858278 0.031586414 108.53995 26.560110 6695.1590 2.9573666e+08 0.065443866 0.029830268 108.58405 26.464551 6697.2665 2.8493675e+08 0.064985366 0.030124988 108.63168 26.361365 6699.3739 2.7526493e+08 0.063739742 0.031245386 108.68130 26.253860 6701.4814 2.6434997e+08 0.062114629 0.032115829 108.73091 26.146354 6703.5889 2.5500398e+08 0.062235425 0.035148843 108.78053 26.038849 6705.6964 2.4434351e+08 0.062384466 0.037906615 108.83015 25.931343 6707.8038 2.3420780e+08 0.062129890 0.040071676 108.87645 25.823837 6709.9113 2.2487472e+08 0.061148522 0.040552898 108.92193 25.716331 6712.0188 2.1418471e+08 0.059134270 0.041864859 108.96900 25.608825 6714.1263 2.0412226e+08 0.057119436 0.047312902 109.01862 25.501320 6716.2337 1.9540717e+08 0.055444289 0.048745648 109.06824 25.393814 6718.3412 1.8808617e+08 0.053298547 0.050343842 109.11255 25.297819 6720.4487 1.8155994e+08 0.052747416 0.050367777 109.15666 25.202248 6722.5562 1.7541664e+08 0.052235045 0.049917630 109.20211 25.103764 6724.6636 1.6908535e+08 0.048728816 0.044384777 109.25173 24.996259 6726.7711 1.6210807e+08 0.046320530 0.040958322 109.30134 24.888755 6728.8786 1.5505436e+08 0.045962174 0.040873361 109.34755 24.781249 6730.9861 1.4549080e+08 0.044276551 0.041730929 109.39303 24.673744 6733.0935 1.4106289e+08 0.043099995 0.044432205 109.43851 24.566238 6735.2010 1.3969540e+08 0.043348919 0.049506833 109.48400 24.458732 6737.3085 1.4000927e+08 0.044821107 0.055118293 109.52948 24.351226 6739.4160 1.4084976e+08 0.045115801 0.063335624 109.57905 24.243720 6741.5234 1.3031994e+08 0.043449628 0.067251596 109.62867 24.136215 6743.6309 1.2306186e+08 0.039125171 0.075303631 109.67593 24.028709 6745.7384 1.1126600e+08 0.037240382 0.078877303 109.72142 23.921204 6747.8459 1.0570089e+08 0.032909380 0.067069959 109.76690 23.813698 6749.9533 1.0427151e+08 0.030306542 0.072016905 109.81238 23.706193 6752.0608 1.0021477e+08 0.027313932 0.074064092 109.85787 23.598687 6754.1683 98957962. 0.026076084 0.075942826 109.90638 23.491181 6756.2758 93534958. 0.023378481 0.074876515 109.95600 23.383675 6758.3832 90398680. 0.023105524 0.074515753 110.00431 23.276164 6760.4907 88599079. 0.023447215 0.076997059 110.04980 23.168643 6762.5982 88169379. 0.027881768 0.077085902 110.09529 23.061121 6764.7057 82944376. 0.030257344 0.079517092 110.14078 22.957321 6766.8131 77472973. 0.030269741 0.081553105 110.18626 22.853951 6768.9206 72223858. 0.025395254 0.084168647 110.23485 22.741260 6771.0281 69304442. 0.021199047 0.089373292 110.28683 22.618395 6773.1356 71895885. 0.017370817 0.094484846 110.33497 22.501089 6775.2430 69189792. 0.013149978 0.099596399 110.37631 22.393584 6777.3505 65474372. 0.0087026839 0.10470795 110.41766 22.286078 6779.4580 63371349. 0.0041352719 0.10981951 110.46291 22.178572 6781.5655 60670044. -0.00096332399 0.11493106 110.50839 22.071066 6783.6729 58818022. -0.0068446473 0.12004261 110.55388 21.965731 6785.7804 57641118. -0.015312769 0.12515417 110.59936 21.862361 6787.8879 54573921. -0.048140527 0.13026572 110.64554 21.756913 6789.9954 52305671. -0.028673943 0.13537727 110.69752 21.634047 6792.1028 49167049. 0.021801662 0.14048883 110.74950 21.511181