“This enlargement of a Pioneer 11 picture covers part of Jupiter’s north temperature zone, and its north polar region. It shows the breakup of the regular banded structure of Jupiter’s clouds as one goes north toward the pole. The alternating, planet-girdling orange belts and grey-white zones, the most prominent features on the planet, first appear to break down into swirling scalloped and oval structures, and farther north to disappear completely. The northernmost part of the picture shows areas within 70 of the North Pole. According to Dr. Andrew Ingersoll, California Institute of Technology, these polar regions contain what appears to be an array of unorganized hurricane like convective storms. Many of these storms are circular, and some are several hundred miles across. Since Jupiter’s polar regions cannot be seen from Earth, this picture shows many features never seen before, and far the greatest array of details ever seen on the giant planet. Pioneer 11 flew within 42,000 km (26,000 mi) of Jupiter. This view was taken in blue light from 600,000 km (373,000 mi). The Pioneer Project is managed by NASA’s Ames Research Center, Mountain View, CA. and the Pioneer spacecraft were built by TRW Systems, Redondo Beach, Ca. The Jovian polar storms may be similar to Earth’s fast-spinning tropical hurricanes in that they are of similar size, and like hurricane may well be “heat pumps”, powered by the latent heat of condensation of water vapor and ammonia vapor. Sharply defined spiral features and scallops, most of them at the boundaries of high-latitude belt and zone regions are believed to result from the wind shears between adjacent, counterflowing jet streams produced in the belts and zones. Many of the jet streams producing these spiral features have speeds relative to the planet of 150 mph each, in opposite directions. This means 300 mph winds at [three words illegible]. Scientists believe that understanding of Jupiter’s Meteorology will lead to better understanding of weather on Earth. Jupiter is a liquid planet and hence has no solid surface, nor any “oceans”, only a gradual transition going down from atmosphere gat to liquid.”
The above is exactly how it’s written on the verso.
Compare/contrast:
bjj.mmedia.is/planet_rend/jup_north.jpg
Credit: Björn Jónsson's website (lots of really cool stuff there)
Finally:
"Figure 9-15. Image D8. Range 1,079,000 km (671,000 mi.), 13 1/2 hours after periapsis."
And:
"The series of images Figures 9-15 through 9-20 shows Jupiter receding as Pioneer 11 leaves the giant planet and rises high above the ecliptic plane on its way to Saturn. Due to an anomaly which affected the rate at which the telescope swept across the planet the command sequence to obtain these pictures had to be changed day by day. Nevertheless all were obtained without any being lost, despite the fact that there was no time to verify the command sequence by computer simulations in advance."
Both above from/at:
history.nasa.gov/SP-349/ch9.htm
Specifically:
history.nasa.gov/SP-349/p176.jpg
