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Global change in broad sense refers to planetary-scale changes in the Earth system. It is most commonly used to encompass the variety of changes connected to the rapid increase in human activities which started around mid-20th century, i.e., the Great Acceleration .
Early works discussing Earth system science, like these NASA reports, generally emphasized the increasing human impacts on the Earth system as a primary driver for the need of greater integration among the life and geo-sciences, making the origins of Earth system science parallel to the beginnings of global change studies and programs.
The research communities represented in this partnership said in the 2001 Amsterdam Declaration on Global Change that the earth system now operates "well outside the normal state exhibited over the past 500,000 years" and that "human activity is generating change that extends well beyond natural variability—in some cases, alarmingly so—and ...
The International Geosphere-Biosphere Programme (IGBP) was a research programme that ran from 1987 to 2015 dedicated to studying the phenomenon of global change.Its primary focus was coordinating "international research on global-scale and regional-scale interactions between Earth's biological, chemical and physical processes and their interactions with human systems."
In the 1980s, the terms global warming and climate change became more common, often being used interchangeably. [29] [30] [31] Scientifically, global warming refers only to increased surface warming, while climate change describes both global warming and its effects on Earth's climate system, such as precipitation changes. [28]
The concept of earth system governance (ESG) is defined in the 2009 Science and Implementation Plan of the Earth System Governance Project as: "the interrelated and increasingly integrated system of formal and informal rules, rule-making systems, and actor-networks at all levels of human society (from local to global) that are set up to steer societies towards preventing, mitigating, and ...
Changes occurring around the last ice age (in technical terms, the last glacial period) show that the circulation in the North Atlantic can change suddenly and substantially, leading to global climate changes, even though the total amount of energy coming into the climate system did not change much.
[citation needed] In 2004, the International Geosphere-Biosphere Programme published “Global Change and the Earth System, a planet under pressure.” [6] The publication’s executive summary concluded: “An overall, comprehensive, internally consistent strategy for stewardship of the Earth system is required”. It stated that a research ...