New Yorker 09月04日
科学家驳斥政府气候报告,科学共识获力挺
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针对美国能源部一份试图淡化全球变暖影响的报告,86位气候科学家联合提交了一份长达四百页的反驳意见。该能源部报告仅选取了五位与主流科学界观点相悖的研究者,并得出“二氧化碳引起的变暖经济影响可能不如普遍认为的那么严重”等结论。然而,这份反驳意见通过详实的科学数据、研究和观察,有力地批驳了报告中的片面论据,例如关于“气象干旱”的统计方法问题,并强调了全球变暖带来的实际危害。文章还借此探讨了在当前政治环境下,科学共识与个人研究之间的辩论,以及科学精神在面对挑战时如何坚持和传播。

🔬 **科学界对政府报告的有力反驳**:86位气候科学家联合提交了一份详尽的反驳意见,回击了美国能源部一份试图淡化全球变暖影响的报告。该能源部报告仅基于五位与主流科学界观点相悖的研究者,其结论,如“二氧化碳引起的变暖经济影响可能不如普遍认为的那么严重”,遭到了科学界的广泛质疑和驳斥。

🌍 **对“气象干旱”论据的详细批驳**:反驳意见特别针对能源部报告中关于美国“气象干旱”未见增加的论点进行了深入分析。科学家们指出,仅以降雨量衡量干旱是片面的,忽略了气候变暖导致的蒸发加剧。同时,通过平均美国大陆的干旱数据掩盖了西部干旱加剧和东部洪涝增多的区域性趋势,引用了多项研究证明近年西部干旱的严重性已达千年或数百年之最。

🏛️ **科学共识与政治环境的冲突**:文章揭示了当前政治环境对科学事实的干扰,引用了官员将气候变化视为“宗教”或“骗局”的言论,以及“信任专家并非科学或民主的特征”的观点。这反映了科学研究和决策在政治化背景下面临的挑战,以及“自己做研究”在复杂科学问题上的不适用性,强调了科学机构和研究人员在维护科学完整性方面的重要性。

📉 **科学事业面临的挑战与坚守**:作者指出,美国的科学事业正面临严峻挑战,包括研究经费削减、卫星数据中断以及为特定产业和意识形态服务的报告出台。尽管如此,科学方法凭借其数百年的积累、部分教育机构的保护以及跨国界的合作,仍将继续产生重要的研究成果。这些成果即使暂时被压制,最终也可能以流行病、野火或海平面上升等形式显现,但人类对知识和理解的追求不会停止。

As I watch the Trump White House and its orbiting debris field of oddballs and charlatans, a single long-ago movie scene keeps returning to my mind. In “Annie Hall,” waiting in line in a movie theatre, Woody Allen’s character becomes irritated by a guy behind him, an academic blowhard pontificating to his date about the culture. When he mentions the Canadian media guru Marshall McLuhan, Allen erupts and then, in a delightful spectacle of comeuppance, produces McLuhan himself, who tells the man, “I heard what you were saying. You know nothing of my work. . . . How you ever got to teach a course in anything is totally amazing.” Allen then says, to the camera, “Boy, if life were only like this.”

Every so often, it is. On Tuesday, eighty-six climate scientists delivered a four-hundred-page response to a Department of Energy report from July which had attempted to show that global warming is no big deal. That report was the scientific equivalent of a bespoke suit. Given that President Trump had declared climate change to be a “hoax,” and given that Energy Secretary Christopher Wright had previously declared it to be a “side effect of building the modern world,” it stands to reason that Wright’s department picked to conduct its report exactly five climate researchers, all notable for careers in which they’ve stood conspicuously outside the overwhelming scientific consensus that global warming is a grave and immediate danger. These five duly concluded, among other things, that “CO2-induced warming might be less damaging economically than commonly believed, and excessively aggressive mitigation policies could prove more detrimental than beneficial.”

The rest of the Trumpian apparatus then swung into motion. Lee Zeldin, the former congressman and failed gubernatorial candidate from New York who somehow ended up as the administrator of the Environmental Protection Agency and who had declared that his goal is to drive “a dagger straight into the heart of the climate-change religion,” embraced the findings, and quickly moved to use them in his effort to overturn the “endangerment finding” that the E.P.A. had previously relied on to regulate greenhouse gases.

The D.O.E report, however, had to be opened up for public comment, and so a climate scientist at Texas A. & M. University, Andrew Dessler, used the social-media platform Bluesky (which has largely replaced X for scientific conversation) to start assembling a global team of eighty-six researchers from all the relevant disciplines who, in a matter of a few weeks, subjected the report’s findings to peer review. Their “comment” is two and a half times as long as the report, and it is almost painfully hilarious to read. For instance, the five skeptics contended that “meteorological drought” was not increasing in the United States; as the researchers point out in their response, this is cherry-picked nonsense. In the first place, “meteorological drought” is only a measure of how much rain falls; the hotter temperatures associated with climate change have been increasing evaporation, which dries up more of that rain. And, in any event, the contrarians used the entire continental U.S. as the statistical basis for their finding, which makes no sense: as global warming increases evaporation in the arid West, it also increases rainfall in the moist East, producing the flooding rains that have caused so much damage in regions like the Appalachians. As the comment archly points out, “taking an average across the CONUS runs the risk of averaging out these trends.” Indeed, the authors note, with all the scientific citations, that “research has indicated that recent droughts in the WUS were more severe than droughts over the past 1000+ years: while megadroughts have occurred in the paleoclimatic record, the western US megadrought of 2000-2018 was the worst since the mid-1500 (Williams et al.2020) and from 2000-2021 was the worst since 800 (Williams et al. 2022) as defined using soil moisture anomalies. Similarly, climate change made the 2012-2014 period in CA the driest period in 1200 years (Griffin and Anchukaitis 2014; Williams et al. 2015).”

The comment has sections like this on every topic raised by the D.O.E. report; it’s a blitzkrieg of studies, observations, and data which makes clear that the authors were miles out of their depth, and further still out of the mainstream. But, of course, that doesn’t necessarily count for much in the current dispensation, where reality is becoming a Choose Your Own Adventure story. In the wake of the resignations of four officials at the Centers for Disease Control and Prevention last week, some early-summer remarks from the Health and Human Services Secretary, Robert F. Kennedy, Jr., started popping up again on social media. He’d told Tucker Carlson that “trusting the experts is not a feature of science. It’s not a feature of democracy. It’s a feature of religion and it’s a feature of totalitarianism. In democracies, we have the obligation—and it’s one of the burdens of citizenship—to do our own research and make our own determinations about things.”

That’s clearly not true about vaccines—we’ve trusted the experts for a century, and it’s worked out pretty well, including during the COVID pandemic, when vaccines saved millions of lives. And it’s a clearly absurd thing to say about global warming: Are we planning to “do our own research” on, to pick a topic covered at length in Tuesday’s response by the eighty-six researchers, the “hemispheric symmetry of the planetary albedo”?

The American scientific enterprise, the source of so much wealth and national prestige, is being unravelled before our eyes—research grants are being cut off, satellites disconnected, reports cooked up to meet the needs of particular industries and ideologies. It is as sad as any of the other dismal effects of the past election. But the scientific method will not, perhaps, go quietly. With hundreds of years of patient work behind it, with some educational institutions willing to protect their scientists, and with researchers hard at work in less-benighted nations, the human desire to know and to understand will continue to produce results. Many of those findings will be contrary to the interests of the blowhards who, at least temporarily, control our nation, and so they may be suppressed for the moment. But whether or not they are heeded, in the end, the truth will out. If it’s not in the form of enlightened policy, it will be in the form of pandemics and wildfires, of untreated disease and rising sea level. Because life really is like this. ♦

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气候变化 科学共识 政府报告 科学驳斥 全球变暖 Climate Change Scientific Consensus Government Report Scientific Rebuttal Global Warming
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