AIDJEX Bulletin #40 - Polar Science Center - University of Washington

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3.20- - 1 t W o? 2 3.051 ...:-.;.. .... I. (D * .......... . . - . .. e ."., .. 4 3.05 (D I. I --.. -..-. ." s .* * ....- - ...... " ............ ... . ..I .. ........ ...I ...... . . . . .. .I.. ... 5 2.95 . * I. . .. *. . - .... ................... I -. -..- ......_._. .--.". .. i i -....). -- * 7 2-90 .. . . .............._........ ..a.. . 2.85 i - u w u, 4- 3.15 3.10 1 2.80 2 .PI5 .... ........ .. .... . . . . . .I. ... ..... . " ..... .--.. .." . .. " ... ..' . * , - s . . . . - . . , * e. 1. .. . ."... .. *. .,. a ..... ..... 2.82'- I - 1 -1-1 -45.0 -35.0 -25.0 -15.0 -5.0 5 .o 15 .o -45.0 -.Qc- .J.l.cj -25.g -15.0 -5.0 5 .o 15 -0 I NTERNFIL TEMPEKHTURE DEG C 1663 I NTER.!~!i-lL ,TEKT'ERFl: I.SE !lEG C 1671 Fig. 12. Temperature sensitivity of the ADRAMS clocks respect to temperature here is of the same sense during the field test from satellite data. The as the slope with respect to frequency in Figure units of clock interval are tens of milliseconds. 11, but about half the magnitude. The difference The scatter is due to poor resolution in the routine to calculate clock rate, sampling resolutions, of the mean from the designed clock interval of 61.825 seconds is 5 msec, and is equivalent to a and the effect of winds. The slope of period with 1 mb pressure error if not corrected.
compensated. in insulated buoy hulls. Those with coefficients greater than O.lmb/OC must be used a Either an efficient clock routine or a clock with a low temperature coefficient (less than 1 lo-'/ C, -40+O0C) must be used with daily clock corrections. If 0.1 mb accwlacy is desired, 0 Temperature compensation of barometers must be used, and buoy hulls must be insulated if temperature coefficients are greater than 0.01 mb/OC. 0 An efficient clock correction routine must be used. These criteria are subjective and somewhat arbitrary, and they should be used with that in mind. It is hoped that they will provide a framework from which to consider design alternatives. REFERENCES Brown, W, P., and E. G. Kerut. 1976. Air droppable RAMS (AD'RAMS) buoy. In Ocean 76, Proceedings of the 1976 IntemationaZ Conference on Engineering in the Ocean Environment, IEEE Publ. No. 76 CHO 1118-9 OEC, sec. 14, D1-6. 81
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DATA BUOYS AIDJEX BULLETIN No. 40 J
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NOTE TO FRIENDS, AND BYSTANDERS . .
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SUMMARY OF TECHNICAL DEVELOPMENTS I
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milestones, kept the vendor working
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The scene during deployment of HF-N
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The initial AIDJEX scientific plan
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poizr-orbiting satellite, which is
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t@ the spacecraft during each orbit
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BUOY NAHE COMMUN. COMMANDS FIXES TA
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L( 0 I 2 3 4 3 Radial error, kilome
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The buoy will be subjected to tempe
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nics occupy about 12 feet of the 17
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Ill -- - KEY AIUJEX WIN WW AEBa 0 4
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event that a melt pond should form
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chute supplied by Paranetics Inc. i
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6'" IqORGANIC LITHIUM BP.TTEI?Y IMP
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Page 36 and 37: provides a grid from which geostrop
Page 38 and 39: words; a four-bit air temperature w
Page 40 and 41: PERFORMANCE OF MET/OCEAN BUOYS IN A
Page 42 and 43: Sensor samples were taken every thr
Page 44 and 45: strengths are known, were used with
Page 46 and 47: the ice (causing reduced shear). An
Page 48 and 49: (McPhee, Mangum, and Martin) , TABL
Page 50 and 51: 70°N 75'N n 3 P 17OOW (D Y 170°W
Page 52 and 53: 12OOW * U Station 25. Xeasurements
Page 54 and 55: (McPhee , Mangum, and Martin) 2701
Page 56 and 57: (McPhee, Mangum, and Martin) a 0 a
Page 58 and 59: "i BUOY 4 I 43 360- 309- 257 206 15
Page 60 and 61: a30gl 251 I 60 511 r 43 BUOY 4 I
Page 62 and 63: n 4, (McPhee, Mangum, and Martin) 8
Page 64 and 65: (McPhee, Mangum, and Martin) 33 W c
Page 66 and 67: . '-,..I.. . B A R R O W W I N D S
Page 68 and 69: :
Page 70 and 71: I 25 23 t h--:!li[ NCI PiHCEl4l 22
Page 72 and 73: .5 .4 .3 0 A R 2 R 0 W J - 0 B U -
Page 74 and 75: 9 1.5 1.0 c 8 w .5 R 930 $ 565 1000
Page 76 and 77: Clock corrections were applied rout
Page 78 and 79: Q) u o z z i 4- 4- Z + + z f n 9 Ef
Page 80 and 81: TABLE 1 DIFFERENCES IN DAILY TEMPER
Page 82 and 83: Laboratory calibration of the ADRAM
Page 86 and 87: POSITION MEASUREMENTS OF AIDJEX MAN
Page 88 and 89: some redundancy. Four points were u
Page 90 and 91: 75.5 75.: - E75.1 LLI % y75.c - 1 1
Page 92 and 93: The translocation principle removes
Page 94 and 95: POSITION ACCURACY To evaluate the q
Page 96 and 97: TABLE 1 STAND-ALONE ACCURACY 68th P
Page 98 and 99: Az i mu t h s When both receivers a
Page 100 and 101: DATA PROCESSING Following the field
Page 102 and 103: model ice motion in the statistical
Page 104 and 105: FREC 1 INCY / DOPPLER / FREQUENCY /
Page 106 and 107: 35 30 25 v) > 0 2 20 LL 0 r= E m 15
Page 108 and 109: An example of a large-scale buoy ar
Page 110 and 111: observations are needed in remote a
Page 112 and 113: useful for determining how various
Page 114 and 115: as well as velocity fields, we must
Page 116 and 117: Since small changes in the yield su
Page 118 and 119: The transformation of the system of
Page 120 and 121: e able to judge how well such a mod
Page 122 and 123: then the flow rule becomes Q = +A -
Page 124 and 125: [-B' -F Finally, we eliminate Carte
Page 126 and 127: differential equation. 2. Discontin
Page 128 and 129: Substituting (36) and (37) into (34
Page 130 and 131: arbitrarily assign the values of 1
Page 132 and 133: The special case when advection can
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TABLE 1 STRETCHING, STRESS, ASP CHA
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ate of deformation, we have normali
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CHARACTERISTIC EQUATIONS The ordina
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One way to circumvent the problems
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The equations governing solutions a
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It is readily seen that when body f
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which may be substituted into equat
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a the stress derivative dCldS remai
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Although we have not studied in thi
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Courant, R., and D. Hilbert. 1962.
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A RESEARCH PLAN TO TEST THE AIDJEX
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the barges managed to reach their d
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APPROACH A baseline simulation 0-f
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SENSITIVITY OF ICE RESPONSE TO DIFF
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Since free drift of ice is computed
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and what is observed becomes less i
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stresses appear to be relatively un
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ehavior is directly related to accu
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TABLE 1 COMPARISON OF ESTIMATED ERR
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a) Base line b) 24-hour prediction
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\ / a) Base line b) 24- hour predi
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a) Base line b) 24- hour predi ct i
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\ / a) Base line b) 24-hour predict
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.. a) Base line b) 24- hour predict
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J2 a) Base line b) 24-hour predicti
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) 24-hour prediction c) 36-hour pre
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8 Figure 17. AIDJEX surface pressur
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APPENDIX 1 AIDJEX DATA FILES 1. Pos
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9A. Surface-1 eve1 ai r pressure (d
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19. Surface pressure (Val i dated)
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APPENDIX 2 AIDJEX DATA TRANSFERRED
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I -7-71327GEO A Cards (continued) 7
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B Cards (continued) 201
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