# # 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 = 61.180033 km # Date (UTC) = 2014-01-14T10:18:29.559 # Date (julian) = 2456671.92950878 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.6637 6.1744309e+10 0.055529500 0.033086454 99.171774 40.183548 6505.2770 5.4005101e+10 0.065957586 0.033874480 99.276766 40.024852 6507.8903 4.8277780e+10 0.076797575 0.034662506 99.378380 39.869729 6510.5036 4.3857593e+10 0.088118787 0.035450532 99.465542 39.726166 6513.1168 4.0205053e+10 0.099927123 0.036238557 99.555947 39.578787 6515.7301 3.6996465e+10 0.11221128 0.037026583 99.655562 39.420573 6518.3434 3.4080294e+10 0.12500096 0.037814609 99.745440 39.270475 6520.9567 3.1437760e+10 0.13831890 0.038602635 99.827477 39.126914 6523.5699 2.9088069e+10 0.14766628 0.039320370 99.920123 38.974509 6526.1832 2.6715792e+10 0.15324402 0.039860160 100.01974 38.816295 6528.7965 2.4198917e+10 0.15845903 0.042074334 100.11410 38.652825 6531.4098 2.1920981e+10 0.16256448 0.045825084 100.20563 38.493635 6534.0230 2.0030774e+10 0.16556141 0.047950999 100.28766 38.355201 6536.6363 1.8354554e+10 0.16703998 0.048359818 100.37391 38.210611 6539.2496 1.6794518e+10 0.16848302 0.049945735 100.47353 38.046539 6541.8629 1.5319842e+10 0.16874469 0.051046714 100.56103 37.896144 6544.4761 1.3955205e+10 0.16840942 0.052030590 100.63794 37.757709 6547.0894 1.2734216e+10 0.16759866 0.053321361 100.72467 37.604323 6549.7027 1.1584600e+10 0.16591559 0.054682360 100.81843 37.440248 6552.3159 1.0561939e+10 0.16387467 0.055507243 100.90191 37.298650 6554.9292 9.6697936e+09 0.16138762 0.054851880 100.98394 37.160217 6557.5425 8.8676576e+09 0.15858829 0.053526070 101.07141 36.998035 6560.1558 8.1161282e+09 0.15575854 0.052133864 101.15802 36.839591 6562.7690 7.4228627e+09 0.15270739 0.050148132 101.24006 36.701157 6565.3823 6.8612237e+09 0.15008200 0.047884272 101.32071 36.561342 6567.9956 6.4097413e+09 0.14815023 0.045775391 101.39762 36.417781 6570.6089 5.9670172e+09 0.14651205 0.044665297 101.47803 36.269547 6573.2221 5.5390791e+09 0.14472467 0.043479222 101.56592 36.111333 6575.8354 5.1554465e+09 0.14242162 0.041536528 101.64710 35.965218 6578.4487 4.8134011e+09 0.13988955 0.037941089 101.72402 35.826763 6581.0620 4.5014988e+09 0.13724353 0.035577847 101.80432 35.671361 6583.6752 4.1938143e+09 0.13522151 0.034679894 101.88634 35.507316 6586.2885 3.9087603e+09 0.13297268 0.033167567 101.96349 35.367719 6588.9018 3.6518601e+09 0.13087541 0.033078778 102.04045 35.229119 6591.5151 3.4102102e+09 0.12799692 0.028620732 102.12247 35.070945 6594.1283 3.1738926e+09 0.12513196 0.026102078 102.20298 34.917109 6596.7416 2.9511022e+09 0.12187060 0.025723902 102.27989 34.773548 6599.3549 2.7702507e+09 0.11950783 0.024951074 102.35501 34.631773 6601.9681 2.6253578e+09 0.11849556 0.027501633 102.42679 34.493338 6604.5814 2.4770817e+09 0.11627759 0.026416506 102.50265 34.347031 6607.1947 2.3222605e+09 0.11429184 0.025322542 102.58469 34.188817 6609.8080 2.1786495e+09 0.11044145 0.023945937 102.65963 34.044279 6612.4212 2.0540201e+09 0.10794177 0.024006014 102.73141 33.905845 6615.0345 1.9390218e+09 0.10708061 0.023252594 102.81079 33.748410 6617.6478 1.8256773e+09 0.10621448 0.023654023 102.89230 33.585222 6620.2611 1.7106759e+09 0.10592547 0.024851326 102.95895 33.446788 6622.8743 1.6126794e+09 0.10468967 0.024525273 103.02604 33.308354 6625.4876 1.5391087e+09 0.10322295 0.025979474 103.09782 33.169919 6628.1009 1.4688842e+09 0.10140125 0.025744056 103.17019 33.028839 6630.7142 1.3891943e+09 0.099753122 0.025930062 103.24637 32.870625 6633.3274 1.3132994e+09 0.098220631 0.026209420 103.32067 32.720860 6635.9407 1.2428700e+09 0.096441412 0.026540861 103.39245 32.582426 6638.5540 1.1764040e+09 0.095197698 0.025647507 103.46632 32.431767 6641.1673 1.1175428e+09 0.095554333 0.025148868 103.54250 32.267693 6643.7805 1.0580580e+09 0.094592890 0.025310469 103.61134 32.123368 6646.3938 1.0079154e+09 0.093182305 0.026123993 103.67800 31.984934 6649.0071 9.5601718e+08 0.091557076 0.027623931 103.75246 31.830283 6651.6204 9.0091273e+08 0.090982906 0.026959576 103.82755 31.674312 6654.2336 8.4922353e+08 0.089928058 0.027936699 103.89421 31.535877 6656.8469 8.0978891e+08 0.087414182 0.028766736 103.96002 31.397443 6659.4602 7.7781493e+08 0.085224681 0.031738606 104.02155 31.259009 6662.0734 7.4487248e+08 0.083107477 0.033003063 104.08619 31.116370 6664.6867 7.0662517e+08 0.081679339 0.029693405 104.16237 30.958155 6667.3000 6.6771432e+08 0.081065175 0.027213651 104.23373 30.809939 6669.9133 6.3378486e+08 0.080176227 0.027417712 104.30040 30.671485 6672.5265 6.0291099e+08 0.079963726 0.027184793 104.36909 30.522046 6675.1398 5.7472292e+08 0.078418621 0.030066157 104.43941 30.363832 6677.7531 5.5051516e+08 0.076521639 0.031287622 104.50661 30.222418 6680.3664 5.2710346e+08 0.076853808 0.029520530 104.57327 30.083983 6682.9796 5.0511787e+08 0.077700072 0.031173024 104.64321 29.927767 6685.5929 4.8146873e+08 0.077334444 0.033331099 104.71184 29.773360 6688.2062 4.5757995e+08 0.074602144 0.033832785 104.77337 29.634925 6690.8195 4.3182720e+08 0.072729498 0.033021953 104.83702 29.491703 6693.4327 4.0972971e+08 0.071636650 0.031455635 104.90734 29.333489 6696.0460 3.9237814e+08 0.071154486 0.029694900 104.97295 29.185867 6698.6593 3.8171557e+08 0.069754763 0.031122756 105.03447 29.047433 6701.2726 3.7309218e+08 0.067448040 0.031809361 105.10114 28.897425 6703.8858 3.5821582e+08 0.067256489 0.035891860 105.17146 28.739211 6706.4991 3.4038806e+08 0.067104479 0.039315053 105.24178 28.586145 6709.1124 3.2186630e+08 0.066338500 0.041061067 105.30970 28.436186 6711.7256 3.0750596e+08 0.063980000 0.041517823 105.36610 28.297751 6714.3389 2.9303707e+08 0.061390696 0.047328889 105.42559 28.154933 6716.9522 2.8013886e+08 0.058992252 0.049803860 105.49590 27.996719 6719.5655 2.6965132e+08 0.056713954 0.050832600 105.55905 27.848693 6722.1787 2.6323592e+08 0.056582704 0.050384228 105.61545 27.710259 6724.7920 2.5463157e+08 0.052387647 0.043312795 105.67971 27.560655 6727.4053 2.4649996e+08 0.050236293 0.040420420 105.75003 27.402441 6730.0186 2.3469711e+08 0.049137972 0.040404359 105.81532 27.249256 6732.6318 2.2372657e+08 0.047537373 0.043856529 105.87933 27.099013 6735.2451 2.1444963e+08 0.047831743 0.049553639 105.94085 26.960578 6737.8584 2.0237012e+08 0.049778659 0.056869982 106.00297 26.818163 6740.4717 1.9265782e+08 0.049440888 0.064856115 106.06743 26.659949 6743.0849 1.8445016e+08 0.045592955 0.071620415 106.13188 26.504634 6745.6982 1.7523759e+08 0.042559898 0.078860408 106.19634 26.352279 6748.3115 1.6712519e+08 0.038460162 0.068655624 106.26080 26.195307 6750.9248 1.5835003e+08 0.035687126 0.073583191 106.32460 26.038706 6753.5380 1.5438808e+08 0.032602928 0.074718456 106.38100 25.900273 6756.1513 1.5125758e+08 0.029777759 0.074556239 106.43846 25.760013 6758.7646 1.4461273e+08 0.029706333 0.075322125 106.50291 25.607658 6761.3779 1.3750471e+08 0.031487557 0.077999443 106.56737 25.452815 6763.9911 1.3098531e+08 0.036651668 0.079456261 106.63183 25.294601 6766.6044 1.2802818e+08 0.037853137 0.081080911 106.69208 25.140595 6769.2177 1.2580086e+08 0.032601699 0.084982216 106.75075 24.988170 6771.8309 1.1719834e+08 0.027965153 0.091320554 106.81520 24.829959 6774.4442 1.1030965e+08 0.023312962 0.097658892 106.87966 24.673532 6777.0575 1.0582916e+08 0.018632339 0.10399723 106.94412 24.521178 6779.6708 1.0014159e+08 0.013994847 0.11033557 107.00507 24.365317 6782.2840 98451234. 0.0093339315 0.11667391 107.06367 24.207103 6784.8973 94095862. 0.0047571386 0.12301224 107.12749 24.054115 6787.5106 91225085. 0.00019939193 0.12935058 107.19086 23.900675 6790.1239 87320038. -0.0043191022 0.13568892 107.24946 23.742461 6792.7371 83192269. -0.0088280058 0.14202726 107.30805 23.587053 6795.3504 80225886. -0.013350625 0.14836560 107.36665 23.434698 6797.9637 77882285. -0.017879153 0.15470393 107.42977 23.282344 6800.5770 77605405. -0.022449937 0.16104227 107.49385 23.129605 6803.1902 74065167. -0.026948346 0.16738061 107.55244 22.971391 6805.8035 72741893. -0.031492412 0.17371895 107.61104 22.815282 6808.4168 69253468. -0.035977912 0.18005729 107.66964 22.662927 6811.0301 66931467. -0.040487656 0.18639562 107.72824 22.510573 6813.6433 65370016. -0.045009970 0.19273396 107.78684 22.358219 6816.2566 61668604. -0.049462291 0.19907230 107.84544 22.205865 6818.8699 60972553. -0.053995848 0.20541064 107.90403 22.052107 6821.4832 57717977. -0.058437013 0.21174898 107.96263 21.893893 6824.0964 54305034. -0.062839768 0.21808731 108.02643 21.725267 6826.7097 52459700. -0.067274318 0.22442565 108.09411 21.549299 6829.3230 49925548. -0.071630884 0.23076399 108.15271 21.396944 6831.9362 50667566. -0.076035253 0.23710233 108.20918 21.244599 6834.5495 51280072. -0.080580769 0.24344066 108.26191 21.092272 6837.1628 47592480. -0.083659396 0.24977900 108.32490 20.918754 6839.7761 45739428. -0.089591771 0.25611734 108.39137 20.740423 6842.3893 43176148. -0.097060433 0.26245568 108.44998 20.588069