#climate
- Anabatic — Moving upward; describes a warm, ascending air current that rises along the slope of a mountain or hill, as a result of intense ground heating under the direct action of solar radiation. This structural atmospheric phenomenon is essential in mountain meteorology, causing the formation of cumuliform clouds over ridges during midday.
- Kangaroo paw — A genus of herbaceous perennial plants, native to the arid regions of Southwestern Australia, belonging to the Haemodoraceae family. Commonly known as 'Kangaroo paw' due to the tubular, curved, and velvety hairy shape of its inflorescences, this structural plant develops long flowering stalks emerging from a rosette of sword-like leaves, being highly valued worldwide in xeriscaping and as a cut flower.
- Season — Each of the four main divisions of the year (spring, summer, autumn, and winter), structurally determined by the Earth's position on its orbit around the Sun and the tilt of the terrestrial axis. This cyclical phenomenon generates regular climatic variations, systematic changes in the length of day and night, as well as profound transformations in the biological rhythm of global flora and fauna.
- Antarctic — Pertaining to Antarctica or the southern polar regions, relating to the South Pole or the frozen zones at the southernmost extremity of the Globe. The term defines unique geographical, climatic, and ecological elements characterized by extremely low temperatures, massive ice sheets, and marine ecosystems adapted to severe environmental conditions.
- Anticyclone — A large-scale atmospheric formation characterized by an area of high barometric pressure (barometric maximum), where values decrease from the center toward the periphery. This structural phenomenon induces a divergent movement of air masses, which circulate clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere, typically being associated with stable, clear weather, devoid of precipitation, or with the formation of thermal inversions during winter.
- Anticyclonic — Pertaining to an anticyclone, specific or characteristic of high atmospheric pressure systems; rotating clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere. In synoptic meteorology, the term describes stable weather regimes, descending air movements (subsidence), and wind mass circulation around a barometric maximum.
- Anti-hail — Preventing, combating, destroying, or limiting the formation and fall of hail; the body of technologies and infrastructures (rockets, ground generators, special nets) used to protect agricultural crops and material assets against devastating solid precipitation.
- Anthropic — Pertaining to human activity, belonging to mankind, or caused, modified, and created by human presence and actions on the surrounding environment. In modern ecology, the term describes profound transformations of natural ecosystems under the influence of industrialization, urbanization, and resource exploitation by human society.
- Anthropoclimatology — An interdisciplinary branch of climatology that studies the complex relationships and interdependencies between climate and the human species. It analyzes both the influence of climatic factors on human physiology, health, behavior, and activities, and the anthropogenic impact on climate modification at local, regional, and global levels through urbanization, industrialization, and deforestation.
- Anthropogenic — Produced, generated, caused, or directly modified by the presence and economic or industrial activities of man. In geology and environmental sciences, the term is widely used to describe factors, pollutants, artificial topography, or current climate changes that do not have a natural origin, but are the direct result of human civilization's footprint.
- Arctic — Pertaining to the region of the North Pole or its surrounding areas; specific to an extremely cold climate characterized by long, freezing winters, permanently low temperatures, and the presence of ice caps or tundra. In a structural-ecological sense, it describes a fragile biotope adapted to severe light and temperature conditions, playing a crucial role in regulating the planet's global thermal balance and ocean currents.
- Areic — Lacking permanent flowing watercourses or an organized surface drainage system toward the ocean; characteristic of desert or karstic regions where low precipitation or extreme soil permeability prevents the formation of a structural hydrographic network. In an ecological sense, it describes an arid territory where groundwater fails to supply stable surface networks.
- Archival technology — A technical and applied branch of archival science dealing with the study, development, and implementation of practical methods for the physical preservation, restoration, and protection of archival documents. It includes repository microclimate management (temperature, humidity, and light control), biological pest control techniques, industrial bookbinding processes, as well as the use of modern digitization and microfilming technologies to salvage fragile mediums.
- Arid — Lacking moisture, dry, barren; a region or climate characterized by extremely low precipitation and high evapotranspiration, structural conditions that prevent the development of rich vegetation or traditional agriculture. Figuratively, it describes a text, speech, or domain lacking sensitivity, dynamism, expressiveness, or imagination, being considered dull or monotonous.
- To aridify — The action of becoming or causing to become arid, dry, and barren; a process through which a soil, region, or ecosystem loses its natural moisture due to prolonged drought, massive deforestation, or global climate change. Figuratively, it represents the act of transforming a speech, activity, or relationship into something rigid, monotonous, and devoid of dynamism or expressiveness.
- Aridification — The action of aridifying and its result; the climatic and ecological process of gradual drying of a region, characterized by a drastic decline in water reserves, degradation of soil structure, and reduction of vegetative cover. It represents a phase preceding desertification, having major consequences on biodiversity, agriculture, and environmental structural stability.
- Arizona — A federal state located in the southwestern region of the United States of America, known globally for its spectacular arid landscapes, geological formations of immense significance such as the Grand Canyon, and its predominantly desert climate. Its territory represents a center of historical cultural convergence, housing numerous Native American reservations and urban areas undergoing rapid technological and demographic expansion in the modern era.
- Harmattan — An extremely hot, dry, and dust-laden local wind that blows regularly from the Sahara Desert toward the Atlantic Ocean, primarily affecting the West African coast. This structural climatic phenomenon manifests especially during the winter season, drastically reducing visibility due to dust haze and having a major impact on agriculture and human health in the affected regions.
- Scorching heat — Great, suffocating, and scorching heat, characteristic of summer days with extremely high temperatures; canopy heat or oppressive sultriness caused by the direct and intense action of the sun's rays. In an extended sense, the term describes the state of atmospheric dryness and parching that affects the soil and agricultural crops, while in a figurative sense, it can express a strong fever of the body or a state of ardor, intense passion, or consuming spiritual suffering.
- Arctic — A rare graphical, neologistic, or regional variant for the adjective 'arctic', used to describe elements specific to the northern polar region, characterized by extremely low temperatures, glacial landscapes, and severe climate phenomena. In popular dialects or older industrial terminology, the word was sometimes used through phonetic simplification to classify frost-resistant equipment or structural freezing phenomena.