関連する実験動画
Updated: Jun 26, 2026

08:39
Simulating Temperature in a Soil Incubation Experiment
Published on: October 28, 2022
熱帯気候は,ボリビアのアルティプラノのミレニアムおよび軌道時間スケールで変化しています
P A Baker1, C A Rigsby, G O Seltzer
1Duke University, Division of Earth and Ocean Sciences, Durham, North Carolina 27708-0227, USA. pbaker@geo.duke.edu
Nature
|February 24, 2001
まとめ
南米の気候の歴史は,過去5万年にわたってアルティプラノの雨季を明らかにしています. これらの変化は,地球の軌道サイクルと北大西洋の気候現象と相関しており,共通の気候ドライバーを示唆しています.
科学分野:
- 古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは
- 気候変動のダイナミクス
- トロピカル気象学 トロピカル気象学
背景:
- 熱帯南米は,世界の大気循環 (ウォーカー循環) の重要な中心地です.
- 南米の気候の歴史を理解することは,世界の気候の洞察にとって極めて重要です.
- この地域の過去の気候変動に関するデータは限られている.
研究 の 目的:
- ボリビアのアルティプラノの過去5万年の気候の歴史を再構築する.
- 南米の熱帯気候と世界の気候パターンとの関係を調査する.
- 軌道とミレニアムの時間スケールでの気候強制を特定するために.
主な方法:
- サラー・デ・ウイウニの掘削と堆積物分析.
- 沈殿体の中核のダウンホールロギング.
- 沈殿層の年代測定は,時系列的な枠組みを確立するために行われます.
主要な成果:
- アルティプラノの効果的湿度の大きな変化は,軌道 (20,000年) とミレニアムタイムスケールで発生しました.
- 最後の氷河期最大を含む湿った時期は,夏の太陽照射の最大値と一致しました.
- ミレニアムスケールの湿ったイベントは北大西洋の寒いイベント (ハインリッヒ,若いドライアス) と相関しています.
結論:
- 寒い北大西洋の海面温度は,南米の熱帯の湿気状態と同期した.
- 共通の強制メカニズムは,北大西洋の気候の変動と南米の湿度の変化を結びつける可能性が高い.
- 地球の軌道周期と北大西洋の気候現象は,過去5万年にわたって熱帯アンデス気候に大きく影響した.
関連する概念動画
What is Weather?
Overview
What is Climate?
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.
Global Climate Change
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.
Temperature Measurement Sites
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Graphs of Two-Variable Functions
A weather map provides a practical example of a function of two variables. Across a wide region such as the United States, temperatures vary from one location to another. Each location can be identified by two geographic coordinates: longitude and latitude. Since a single temperature value is assigned to each coordinate pair, the situation can be represented mathematically as a function with two inputs and one output.In mathematical notation, longitude and latitude can be labeled as x and y,...
Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...

