Sromovsky L A, Best F A, Collard A D, Fry P M, Revercomb H E, Freedman R S, Orton G S, Hayden J L, Tomasko M G, Lemmon M T
University of Wisconsin, Madison 53706, USA.
Science. 1996 May 10;272(5263):851-4. doi: 10.1126/science.272.5263.851.
The Galileo probe net flux radiometer measured radiation within Jupiter's atmosphere over the 125-kilometer altitude range between pressures of 0.44 bar and 14 bars. Evidence for the expected ammonia cloud was seen in solar and thermal channels down to 0.5 to 0.6 bar. Between 0.6 and 10 bars large thermal fluxes imply very low gaseous opacities and provide no evidence for a deep water cloud. Near 8 bars the water vapor abundance appears to be about 10 percent of what would be expected for a solar abundance of oxygen. Below 8 bars, measurements suggest an increasing water abundance with depth or a deep cloud layer. Ammonia appears to follow a significantly subsaturated profile above 3 bars. Unexpectedly high absorption of sunlight was found at wavelengths greater than 600 nanometers.
伽利略探测器的净通量辐射计在木星大气中压力介于0.44巴至14巴之间、高度范围达125公里的区域测量了辐射。在压力降至0.5至0.6巴的太阳和热通道中发现了预期氨云的证据。在0.6至10巴之间，大热通量意味着极低的气体不透明度，且未提供深水云存在的证据。在接近8巴处，水汽丰度似乎约为太阳氧丰度预期值的10%。在8巴以下，测量结果表明随着深度增加水汽丰度上升，或者存在深层云层。氨在3巴以上似乎呈现明显的未饱和分布。在波长大于600纳米处发现了意外高的太阳光吸收。
