shanghaibaba 写了: 2025年 7月 8日 16:17
你听他扯家宝蛋呢。既然能降下这么多雨,就说明空气里面有这么多的湿度。频繁的人工降雨更加不容易形成暴雨,因为水汽都降掉了。既然下了这么大的暴雨,这就跟人工降雨关系不大。人工降雨还没能做到平白无故得变出水来。真当科学家是东海龙王?
博导昨天贴了人工降雨的批文,能看到计划从3月到10月人工降雨,不过好像看不到频繁程度:
站内帖子:Re: reddit上在吵这个camp到底是不是个maga camp
刚查了一下,新闻都说人工降雨和洪水没关系……人工降雨是7/2 early afternoon做的,当时发现空气湿度很高,就没再继续弄。当时“种”的云两小时后就消散了,对4号凌晨的暴雨没有影响:
https://apnews.com/article/fact-check-t ... 008ed2db44
FACT FOCUS: No, weather modification did not cause the deadly flash floods in Texas
By MELISSA GOLDIN
July 8, 2025
Doricko, the Rainmaker CEO, wrote as part of a series of X posts. “Rainmaker did not operate in the affected area on the 3rd or 4th or contribute to the floods that occurred over the region.”
He said Rainmaker’s last cloud seeding operation prior to the floods occurred in the early afternoon on July 2 over eastern portions of south-central Texas. Two clouds were seeded and remained in the sky for about two hours before dissipating. Rainmaker suspended its cloud seeding operations indefinitely the same day in response to “unusually high moisture content.”
这篇文章的开头还有几位专家解释:
“The claim that cloud seeding played a role in this tragic event is complete nonsense,” said Andrew Dessler, director of Texas A&M University’s Texas Center for Extreme Weather.
Dev Niyogi, a professor at the University of Texas at Austin who studies extreme weather, said it is “extremely unlikely” cloud seeding played a role in the floods. He cited weather factors as the reason: “the moisture flow coming into the area and the widespread rains the system had, as well as the forecast of very heavy rains over the wider area.”
Sen. Ted Cruz of Texas said at a press briefing on Monday that “to the best of my knowledge, there is zero evidence of anything related to anything like weather modification” when asked about such speculation. He added: “The internet is a strange place. People can come up with all sorts of crazy theories.”
……
Cloud seeding utilizes an artificial material — typically silver iodide — to induce precipitation or clear fog. The practice is an imprecise undertaking with mixed results.
Dessler explained that “cloud seeding can work in certain limited situations and produce very modest increases in precipitation,” but often delivers nothing.”
Regardless, the process cannot create storms out of thin air. Ken Leppert, an associate professor of atmospheric science at the University of Louisiana Monroe, said it “had absolutely nothing” to do with the flash floods in Texas.
“Cloud seeding works by adding aerosols to existing clouds,” he said. “It doesn’t work by helping to create a cloud/storm that doesn’t already exist. The storms that produced the rainfall and flooding in Texas were not in existence two days before the event.”
The Texas Hill Country, in the central part of the state, is naturally prone to flash flooding due to the dry, dirt-packed areas where the soil lets rain skid along the surface of the landscape instead of soaking it up.
After a flood watch notice was issued midday on July 3, the National Weather Service issued an urgent warning overnight for at least 30,000 people. The July 4 flash floods started with a particularly bad storm that dropped most of its 12 inches (30 centimeters) of rain in the dark early morning hours. There was so much rain that the Guadalupe River rose higher than it has in 93 years by almost a foot, according to local reports.