関連する実験動画
Updated: Nov 15, 2025

06:10
Using Generative Art to Convey Past and Future Climate Transitions
Published on: March 31, 2023
1.3K
過去千年にわたり火山による気候の振動
Michael E Mann1, Byron A Steinman2, Daniel J Brouillette3
1Department of Meteorology and Atmospheric Science, The Pennsylvania State University, 514 Walker Building, University Park, PA 16802-5013, USA. mann@psu.edu.
まとめ
この研究では 内部的な多十年的な気候の振動の証拠は見つかりませんでした 古気候データにおける明らかな振動は 工業化以前の火山活動によるもので 明確な気候サイクルではない.
科学分野:
- 気候科学
- 古代気候学
- 気候モデリング
背景:
- 過去の研究では,気候の内部的な10年振動 (40〜60年) が示唆されていました.
- 最近の研究では 大西洋多年波動は 人為的な力によって引き起こされていると示唆しています
- 現在の気候モデルは,制御シミュレーションでは堅固な多十年振動がない.
研究 の 目的:
- 古気候データで観測された多十年振動の起源を調査する.
- これらの振動が 内部的な気候システム行動か 遺物かを決定する
主な方法:
- コントロールと強制の比較
- 過去 千年
- 気候シミュレーション
- マルチデケダルの振動行動に関する古気候データの分析.
- シミュレートされた気象変動の周波数帯解析
主要な成果:
- 古気候データは,工業化以前の時代に多十年振動的行動を示している.
- 工業化以前の気候データにおける 明らかな振動は 火山活動パルスによるものです
- 火山活動が50年から70年の周波数帯に 大きく影響します
結論:
- 気候システムにおける 内部的な多十年振動に関する 説得力のある証拠はありません
- 観測された数十年間の変動は,外部の力,特に火山によるものです.
関連する概念動画
Global Climate Change
27.9K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
27.9K
Isothermal Processes
4.4K
A thermodynamic process that occurs at constant temperature is called an isothermal process. Heat slowly flows into the system or out of the system to maintain thermal equilibrium. Processes involving phase changes like water evaporation into steam or freezing water into ice at a constant temperature are examples of Isothermal Processes.
An ideal gas can also undergo isothermal expansion or compression.
For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
An ideal gas can also undergo isothermal expansion or compression.
For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
4.4K
Forced Oscillations
7.3K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
7.3K
Isochoric and Isobaric Processes
3.9K
A thermodynamic process that occurs at constant volume is called an isochoric process. According to the first law of thermodynamics, heat supplied or removed from the system is partially utilized to perform work and change the internal energy of the system. However, in an isochoric process, the volume remains constant. Hence, the work done by the system is zero. Therefore, the exchange of heat changes the internal energy of the system only.
Suppose 1000 g of water is heated from 40...
Suppose 1000 g of water is heated from 40...
3.9K
The Carbon Cycle
42.4K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
42.4K
What is Climate?
19.9K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
19.9K

