StormDebris:
The History of Meteorology
Edmond Halley and the Mapping of Global Winds
Date: 1686
Location: England
Type: Scientific paper / early atmospheric theory
Author: Edmond Halley
Why it matters: First attempt to map and explain global wind patterns systematically
Timeline placement: The Instrumental Turn
In 1686, Edmond Halley published one of the earliest attempts to describe wind as a global system rather than a collection of local disturbances. Best known today for Halley’s Comet, Halley also turned his attention to the atmosphere to determine why the winds blow the way they do across the Earth.
His paper, presented to the Royal Society, offered a large-scale explanation for the trade winds, monsoons, and other persistent wind patterns observed by sailors and merchants. Rather than treating winds as isolated events, Halley framed them as part of a planetary system driven by solar heating.
Although later developments in atmospheric science would revise his conclusions, Halley’s work marked a turning point. It shifted attention toward global circulation and set the stage for understanding the atmosphere as a connected, dynamic system.
Historical Context
By the late seventeenth century, European science was undergoing a transformation often associated with the Scientific Revolution. Observation, experimentation, and mathematical reasoning were increasingly emphasized, supported by new instruments and expanding global travel.
Maritime exploration played a crucial role. Sailors crossing the Atlantic and Indian Oceans encountered persistent wind patterns, especially the steady trade winds. According to historian Dava Sobel, these winds were not merely curiosities but essential to navigation, shaping trade routes and imperial expansion.
Despite their importance, the underlying causes of these winds were poorly understood. Earlier explanations often relied on local or qualitative reasoning, without a global framework. As James Rodger Fleming notes, early meteorology lacked coordinated observation systems and remained fragmented.
Halley approached the problem with a broader perspective. Drawing on reports from across the globe and influenced by the emerging emphasis on systematic explanation, he sought to unify these observations into a single account of atmospheric motion.
Edmond Halley (1656–1742), English astronomer and geophysicist, is shown in a formal portrait painted by Richard Phillips. Halley is best known for calculating the orbit of the periodic comet now named after him, but his work extended far beyond astronomy into early geophysics and atmospheric science. He produced some of the first systematic maps of global wind patterns and trade winds, helping to shift meteorology toward a planetary, data-driven perspective grounded in observation and navigation.
In his 1686 paper, An Historical Account of the Trade Winds, and Monsoons, Halley proposed that wind patterns arise primarily from differences in solar heating across the Earth’s surface.
His reasoning unfolds in a sequence:
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The Sun heats the Earth unevenly, with the greatest intensity near the equator.
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Warm air rises in these heated regions, creating areas of lower pressure.
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Cooler air from surrounding regions flows in to replace it, generating wind.
Halley extended this idea across the globe. As the Sun appears to move westward across the sky, the zone of maximum heating shifts, producing a continuous pattern of rising air and horizontal flow. According to Halley, this moving heat-driven system explains the steady easterly trade winds observed in the tropics.
He also applied this framework to monsoons. Seasonal changes in solar heating between land and sea, he argued, cause large-scale reversals in wind direction, particularly in regions such as the Indian Ocean.
What distinguishes Halley’s model is its scale. Winds are no longer treated as local gusts but as parts of a planetary engine powered by sunlight. The atmosphere begins to look less like a patchwork and more like a circulating system, with energy flowing through it like currents in a vast, invisible ocean.
What It Proposed
The map overlays prevailing trade winds, monsoons, and seasonal wind shifts onto a Mercator projection, using directional arrows to indicate observed wind behavior across oceans. Created by cartographer Herman Moll in the early eighteenth century, it reflects the growing influence of navigational science and empirical observation in mapping the world. Beyond its geographic detail, the map represents an early fusion of meteorology and cartography, showing wind not as a local curiosity but as a global, structured system shaping maritime travel and commerce.
Strengths and Insights
Halley’s work represents a significant conceptual advance. Most importantly, it treats atmospheric motion as a global phenomenon governed by consistent physical principles.
His emphasis on solar heating as a driving force was especially influential. Modern meteorology still recognizes uneven heating as a fundamental cause of atmospheric circulation. As Fleming argues, Halley’s model helped shift attention toward energy balance and large-scale dynamics.
Halley also integrated empirical observation with theoretical reasoning. Drawing on sailors’ reports, he attempted to map wind patterns across oceans, creating one of the earliest global visualizations of atmospheric behavior.
Another strength lies in the move toward system-building. Like Aristotle before him, Halley sought coherence, but with a crucial difference: his framework was grounded in increasingly empirical and geographically expansive data.
Limitations and Errors
Despite its insights, Halley’s model contained significant inaccuracies. Most notably, it did not account for the Earth’s rotation in the way later scientists would formalize through the Coriolis Effect.
Halley assumed that air would move directly toward regions of heating, producing straightforward east–west flows. In reality, the rotation of the Earth deflects moving air masses, contributing to the characteristic curvature of global wind belts.
Additionally, his model treated the atmosphere largely as a single-layer system. It did not include vertical structure, pressure gradients in the modern sense, or the complex circulation cells identified later, such as the Hadley Cell, named after George Hadley, who refined the explanation in the eighteenth century.
As with earlier theories, these limitations reflect the tools available at the time. Systematic global measurements of pressure, temperature, and wind did not yet exist. Without such data, Halley’s model relied on qualitative reasoning and scattered observations.
Historical Impact
Meteorologica exerted influence far beyond its original cultural setting. In antiquity, it became part of the broader Aristotelian framework studied in philosophical schools, where its explanations of atmospheric phenomena were transmitted alongside works on physics, cosmology, and biology. Its authority derived not from experimental verification but from its integration within a comprehensive natural philosophy.
During the medieval period, the text entered both Islamic and Latin scholarly traditions through translation and commentary. It became a standard reference in university curricula, where students encountered meteorological explanations within the framework of Aristotelian physics. The categories of exhalation, elemental transformation, and qualitative change shaped atmospheric theory for centuries. Later commentators refined and debated Aristotle’s positions, often working within the structure he had established rather than abandoning it outright.
The persistence of Aristotelian meteorology illustrates the stabilizing force of systematic explanation. Because Meteorologica linked atmospheric phenomena to a broader cosmological order, it provided intellectual stability. Even as observational practices expanded, scholars frequently interpreted new phenomena through Aristotelian categories.
Its eventual decline was gradual rather than abrupt. From the seventeenth century onward, the development of instruments such as the thermometer and barometer introduced new forms of evidence that did not fit easily within the elemental framework. Quantitative measurement and mathematical analysis slowly displaced qualitative explanation. Yet even during this transition, Aristotle’s insistence on natural causation and systematic explanation continued to shape the emerging scientific tradition.
The long historical arc of meteorology does not move directly from myth to modern science. It passes through Meteorologica, which provided a structured way of thinking about atmospheric change that endured for nearly two millennia. Its importance lies not in the correctness of its mechanisms but in the durability of its explanatory architecture.
Related Pages
Timeline
This work belongs to the instrumental phase of meteorology.
Themes
Global wind mapping contributes to the conceptual foundations of atmospheric theory.
Later Developments
Global wind mapping allowed for better forecasting techniques.
Sources & Notes
Primary Sources
Halley, Edmond. An Historical Account of the Trade Winds, and Monsoons. Philosophical Transactions of the Royal Society, 1686. https://royalsocietypublishing.org/rstl/article/16/183/153/109910/An-historical-account-of-the-trade-winds-and?searchresult=1
Secondary Sources
Fleming, James Rodger. Historical Perspectives on Climate Change. Oxford University Press, 1998. Limited preview available via Google Books.
Sobel, Dava. Longitude. Walker & Company, 1995. Context on navigation and global winds. Preview available via Internet Archive.
National Oceanic and Atmospheric Administration (NOAA). “What are trade winds?”. Accessed via NOAA.
Notes
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Halley’s original paper uses descriptive rather than mathematical language; terminology has been modernized where necessary for clarity.
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The concept later known as the Coriolis Effect was formalized in the nineteenth century and was not available to Halley.
Revision Note
Last reviewed: April 2026