Tahiti

[pukpr]

Similar to #4 discussion on Darwin

Tahiti data is spotty before the year 2000 so fit from 1904 to 2020

Identical forcing

• 0.00218600964 :offset:
• 0.00000000000 :bg:
• 0.00000000000 :impA:
• 0.00000000000 :impB:
• 0.00000000000 :impC:
• -9.99535824152:delA:
• 0.28365863093:delB:
• 10.01283103656:asym:
• -0.06469998749:ann1:
• 0.96071280939:ann2:
• -0.06223865002:sem1:
• 1.75910760343:sem2:
• 0.00000000000:year:
• 0.02949273880:IR:
• 0.00000000000 :mA:
• -0.00000000000 :mP:
• 0.00539529472 :shiftT:
• 0.00000000000 :init:

Different set of LTE parameters

0.00197347721 :trend:
 -0.01437032690 :K0:
 -3.80029546205 :level:
 -5.34244683190,    0.32088317075,    2.74240360334 29
 31.30748046120,    0.45148185860,    1.21548173208-172
  0.55120678977,    0.10350090199,    1.84070400659-3
  1.73008027226,    0.18841190269,   -0.69950924380-9
 -3.51148753380,    0.25432489317,   -3.05745513355 19
  0.83719891448,    0.17910920944,    2.42108779424-5
-454.96299531248,    0.59341677352,   -1.57099826319 2492
-960.06016007148,    0.21218960900,    0.99690273927 5260
 -0.18253301007,    0.22613227412,   -2.30997170865 1
-37535.90565868833,    0.38025945583,    2.19638845691 205639

Assuming a fundamental of approximately 0.18, the harmonics are

• 3
• 5
• 10
• 20
• 30
• 176

[pukpr]

Applying harmonics of 0.178

   0.00085401658 :trend:
  -0.00190308503 :K0:
  -1.62859103436 :level:
-454.94512354728,    0.44307266349,    0.18481457337 2557
  -0.17793248698,    0.17320892569,   -2.84014323729 1
  -0.35586497396,    0.12676912149,    0.73008694266 2
  -1.77932486982,    0.09642831809,   -1.66034797749 10
  -0.53379746095,    0.06025545378,    0.06369470003 3
  -2.31312233077,    0.18413559370,   -1.05486300000 13
  -3.55864973965,    0.07735724961,   -2.31608937869 20
  -5.33797460947,    0.54598348836,   -2.48889902960 30
  -0.71172994793,    0.10314693945,    3.03472893799 4
  -0.88966243491,    0.09727743114,    2.03528596476 5
  -8.36282688818,    0.13519026046,   -0.38746421218 47
 -11.74354414084,    0.15813511487,    3.01597366815 66
 -31.31611770891,    0.45990959184,   -2.87481406383 176

CC=0.76 excluded interval

[pukpr]

Tahiti vs Darwin tidal factors

Only a slight variation in the very long period tidal factors. The forcing is essentially identical even though the fitting algorithm was allowed to adjust the parameters slightly.

Once the semi-annual impulse is applied the forcing remains identical

The differences are almost completely in the LTE modulation and in the 180° phase shift in the factors.

[pukpr]

../io/backup tahiti-p789-1875-1932hi

CC_END 1932.0
CC_START 1875.0
LOCKT false
NLOOPS 20
REL false

  -0.00000034963 :offset:
  -0.00000185260 :bg:
  -0.00000025515 :impA:
  -0.00000011053 :impB:
   0.00000012924 :impC:
   2.05017353644:delA:
   0.00943142769:delB:
  -2.13049298857:asym:
   0.05999764596:ann1:
   4.94207548195:ann2:
  -0.01280575836:sem1:
  -3.86873217864:sem2:
  -0.00006649387:year:
   0.09336097466:IR:
   0.00000081812 :mA:
  -0.00504963426 :mP:
  -0.00008200411 :shiftT:
  -0.01503374516 :init:
---- Tidal ----
   9.10846048884,    0.00050110523,    0.12982454143 1
  29.53063161821,    0.00080162688,   -1.25535712767 2
  27.09267692660,    0.00434777525,   -1.68515739226 3
   7.08840421924,    0.00872615081,    1.78282107915 4
  13.60611040750,    0.01266895309,   -1.26824793792 6
  13.66083077700,    0.31766799318,   -2.64389716529 7
3396.73824406533,    0.00165411133,    2.68312025508 8
   9.12068919638,    0.02009903172,    0.24939606887 9
  13.77727494300,    0.00952383465,    0.81683844537 10
6793.47648813065,    0.00073922690,   -0.92298262355 11
  27.55454988600,    0.08731902557,   -1.29372564513 12
  27.66676714572,    0.00611152425,    0.80398575627 13
  27.44323926226,    0.00414815611,    2.65913140982 14
1616.30271425126,    0.00314291004,   -1.07259086097 15
   6.85940288609,    0.01610880191,    0.91488274507 16
   7.09580808029,    0.01897316058,    0.84011229279 17
   9.55688280279,    0.01037095441,   -0.89158499806 18
   9.13295078376,    0.09003503441,   -0.86225549322 19
2190.35004466729,    0.00044056967,   -1.88729359603 20
  27.21222081500,    0.00082097012,    2.73303739157 21
   9.18484996200,    0.00591883352,    1.95622092569 22
  14.76531580910,    0.02337771413,    0.15766215505 23
  31.81204039259,    0.01453163980,   -1.70529453791 24
   9.54345731979,    0.00536378527,    0.80353309029 25
  13.63341568476,    0.12446275192,   -1.83759095584 26
  26.98505934729,    0.00188823021,   -1.80900458337 27
 365.24982190613,    0.01288306848,    2.58406917975 28
 182.62491095306,    0.02327349127,   -0.66589049889 29
 121.74994063538,    0.00381153618,    2.32354061327 30
   9.61372689544,    0.00536763583,    2.28764681091 31
   5.64270643091,    0.00528796411,    2.28843543731 32
---- LTE ----
   0.00000000000 :trend:
   0.00000000000 :accel:
  -0.13377187008 :K0:
  -0.01097819606 :level:
5747.60041426865,    0.28246015525,    2.63061426779-5570
-201.25515118175,    0.45127858055,   -2.65028599163 195
  -1.03186082856,    0.10663617767,   -2.48869888222 1
 -10.31860828561,    0.06040336346,    2.31771223662 10
  -3.09558248568,    0.15410667660,    0.96267051691 3
 -11.35046911417,    0.04593709742,   -3.07071488140 11
 -14.44605159985,    0.13406355133,    1.03384074915 14
  -5.15930414280,    0.23498458564,   -0.69737629228 5
 -13.41419077129,    0.22878511170,   -0.01681499644 13
  -6.19116497137,    0.06712468773,   -1.25298676857 6
  -9.28674745705,    0.14097204321,    0.55943322049 9
  -7.22302579993,    0.10382645788,    3.06197715971 7
 -12.38232994273,    0.05775624269,    1.95751833060 12
  -8.25488662849,    0.22685038870,    1.52086593058 8
CC   0.4861713966   0.7887239692   6 1
   0.99795669302:dLOD: