The long-term patterns and averages of weather conditions in a given region, encompassing temperature, precipitation, humidity, wind, and atmospheric pressure. Climate science examines the Earth's climate system, its variability, and the impacts of natural and anthropogenic forcing. This tag covers climatology, climate change, paleoclimatology, climate models, and related environmental phenomena.
Climate change refers to significant, long-term changes in the Earth's climate, particularly the rapid warming observed since the mid-20th century. Driven primarily by greenhouse gas emissions from fossil fuel combustion, deforestation, and industrial processes, anthropogenic climate change poses unprecedented risks to ecosystems, human health, food security, and global economic stability. This comprehensive article examines the physical science basis, observed impacts, projected future scenarios, and mitigation pathways outlined in the IPCC AR6 synthesis.
The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere. This natural process is essential for life on Earth, but human activities have intensified it significantly.
The Paris Agreement is a legally binding international treaty on climate change, adopted by 196 parties at the COP21 climate summit in December 2015. It sets a goal of limiting global warming to well below 2°C, preferably to 1.5°C, compared to pre-industrial levels.
ENSO is the irregular fluctuation of sea surface temperatures and atmospheric pressure across the tropical eastern Pacific Ocean. Its two phases, El Niño and La Niña, profoundly influence global weather patterns, affecting precipitation, temperature, and storm tracks worldwide.
Paleoclimatology reconstructs past climates using proxy data from ice cores, tree rings, sediment layers, and coral records. These reconstructions reveal that the current rate of warming exceeds anything in at least the past 2,000 years, providing crucial context for understanding anthropogenic climate change.
Carbon capture and storage (CCS) encompasses technologies that capture CO₂ emissions from industrial sources or directly from the atmosphere, then transport and store them underground. CCS is increasingly viewed as essential to achieving net-zero emissions by mid-century.
Arctic amplification describes the phenomenon of accelerated warming in the Arctic region, occurring at roughly twice the global average rate. This drives cascading effects including sea ice loss, permafrost thaw, and changes to the jet stream, with far-reaching consequences for global weather patterns.
Climate justice examines the disproportionate impacts of climate change on vulnerable populations and marginalized communities worldwide. This article explores the ethical dimensions of climate policy, historical emissions responsibility, loss and damage frameworks, and the role of indigenous knowledge in adaptation strategies.
The global transition to renewable energy represents one of the most significant technological and economic transformations in human history. This article reviews the current state of solar photovoltaics, wind power, hydroelectricity, geothermal energy, and emerging technologies.
Monsoon systems affect nearly half of the world's population, particularly in South Asia, East Africa, and West Africa. This article examines how rising global temperatures are altering monsoon dynamics, intensifying extremes, and threatening water security for billions.
Climate models are mathematical representations of Earth's climate system, ranging from simple energy balance models to comprehensive Earth System Models. This article traces their evolution, explains the physics embedded in their codes, and discusses uncertainties in projection outputs used by the IPCC.