Kristine C. Harper

Weather control. Juxtaposing those two words is enough to raise eyebrows in a world where even the best weather models still fail to nail every forecast, and when the effects of climate change on sea level height, seasonal averages of weather phenomena, and biological behavior are being watched with interest by all, regardless of political or scientific persuasion. But between the late nineteenth century—when the United States first funded an attempt to “shock” rain out of clouds—and the late 1940s, rainmaking (as it had been known) became weather control. And then things got out of control. In Make It Rain, Kristine C. Harper tells the long and somewhat ludicrous history of state-funded attempts to manage, manipulate, and deploy the weather in America. Harper shows that governments from the federal to the local became helplessly captivated by the idea that weather control could promote agriculture, health, industrial output, and economic growth at home, or even be used as a military weapon and diplomatic tool abroad. Clear fog for landing aircraft? There’s a project for that. Gentle rain for strawberries? Let’s do it! Enhanced snowpacks for hydroelectric utilities? Check. The heyday of these weather control programs came during the Cold War, as the atmosphere came to be seen as something to be defended, weaponized, and manipulated. Yet Harper demonstrates that today there are clear implications for our attempts to solve the problems of climate change.

State Control of the Atmosphere in Twentieth-Century America

Make It Rain

The history of the growth and professionalization of American meteorology and its transformation into a physics- and mathematics-based scientific discipline. For much of the first half of the twentieth century, meteorology was more art than science, dependent on an individual forecaster's lifetime of local experience. In Weather by the Numbers, Kristine Harper tells the story of the transformation of meteorology from a “guessing science” into a sophisticated scientific discipline based on physics and mathematics. What made this possible was the development of the electronic digital computer; earlier attempts at numerical weather prediction had foundered on the human inability to solve nonlinear equations quickly enough for timely forecasting. After World War II, the combination of an expanded observation network developed for military purposes, newly trained meteorologists, savvy about math and physics, and the nascent digital computer created a new way of approaching atmospheric theory and weather forecasting. This transformation of a discipline, Harper writes, was the most important intellectual achievement of twentieth-century meteorology, and paved the way for the growth of computer-assisted modeling in all the sciences.

The Genesis of Modern Meteorology

Weather by the Numbers

Ronald E. Doel

Matthias Heymann

Using newly declassified documents, this book explores why U.S. military leaders after World War II sought to monitor the far north and understand the physical environment of Greenland, a crucial territory of Denmark. It reveals a fascinating yet little-known realm of Cold War intrigue and a delicate diplomatic duet between a smaller state and a superpower amid a time of intense global pressures. Written by scholars in Denmark and the United States, this book explores many compelling topics. What led to the creation of the U.S. Thule Air Base in Greenland, one of the world’s largest, and why did the U.S. build a nuclear-powered city under Greenland’s ice cap? How did Danish concern about sovereignty shape scientific research programs in Greenland? Also explored here: why did Denmark’s most famous scientist, Inge Lehmann, became involved in research in Greenland, and what international reverberations resulted from the crash of a U.S. B-52 bomber carrying four nuclear weapons near Thule in January 1968?

Kristine C. Harper

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