Global Atmospheric Research Programme

Global Atmospheric Research Programme. It was a landmark international scientific collaboration established to advance understanding of the Earth's atmosphere. Co-sponsored by the International Council for Science and the World Meteorological Organization, its primary goals were to improve weather forecasting and lay the groundwork for studying climate change. The programme coordinated massive field experiments and fostered unprecedented global data exchange, fundamentally transforming the atmospheric sciences.

Background and establishment

The origins of the programme lie in the scientific optimism following the International Geophysical Year and the dawn of the Space Age. Scientists recognized that understanding global weather systems required observations beyond national borders. Key figures within ICSU and the WMO, building on proposals from the 1960s, formally established the programme in 1967. Its creation was driven by the convergence of emerging technologies like satellite meteorology and high-speed computers, and a growing consensus on the need for a coordinated global approach to atmospheric research, as highlighted in earlier reports to the United Nations.

Objectives and scope

The programme had two overarching scientific objectives. The first was to improve the accuracy of extended-range weather forecasting by studying the predictable components of atmospheric behavior. The second, broader objective was to understand the physical basis of climate, focusing on the interactions between the atmosphere and the world's oceans. Its scope was truly global, aiming to observe the entire atmospheric system through a combination of conventional networks, novel technologies, and complex numerical models. This required integrating efforts across disciplines like fluid dynamics, thermodynamics, and radiative transfer.

Major projects and experiments

The programme's most ambitious undertaking was the First GARP Global Experiment, a cornerstone of which was the Global Weather Experiment in 1978-79. This unprecedented effort involved a vast international fleet including ships from the United States Navy, specialized aircraft, constant-level balloons, and a constellation of satellites like TIROS-N. Other significant projects included the GARP Atlantic Tropical Experiment, which studied tropical convection systems, and the Monsoon Experiment, investigating the dynamics of the Asian monsoon. These experiments were planned and executed through the joint efforts of committees like the Joint Organizing Committee and involved scientists from nations including the Soviet Union, Japan, and members of the European Space Agency.

Key findings and scientific contributions

The programme yielded transformative insights into atmospheric dynamics and predictability. It provided the first comprehensive global datasets that validated and improved general circulation models. Research quantified the crucial role of the tropical ocean in driving global circulation and demonstrated the limits of medium-range weather prediction. The experiments greatly advanced the understanding of planetary waves, jet streams, and the transfer of energy between latitudes. Furthermore, it proved the critical importance of satellite data assimilation for numerical weather prediction, a legacy that directly benefits operations at centers like the European Centre for Medium-Range Weather Forecasts and the National Centers for Environmental Prediction.

Legacy and transition

The programme concluded in 1982, having successfully achieved its core mandate and setting the stage for the next era of Earth system science. Its most direct legacy was the establishment of the World Climate Research Programme in 1980, which expanded the focus to explicitly include the oceans and climate change. The infrastructure and collaborative models it pioneered became foundational for subsequent major projects like the Tropical Ocean Global Atmosphere programme and the World Weather Watch. The culture of open data exchange and international cooperation it institutionalized remains a cornerstone of modern environmental science, influencing ongoing efforts under the auspices of the Intergovernmental Panel on Climate Change.

Category:Atmospheric science Category:International scientific organizations Category:Climate change organizations