相关实验视频
Updated: Jul 13, 2025
07:28
Evolution of Staircase Structures in Diffusive Convection
Published on: September 5, 2018
6.6K
海洋热浪的垂直结构
Ying Zhang1, Yan Du2,3, Ming Feng4
1State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.
Nature communications
|October 14, 2023
概括
海洋热浪 (MHWs) 有不同的垂直结构,包括浅层,深层和地下类型. 了解这些模式对于预测它们在气候变化中的影响至关重要.
科学领域:
- 海洋学 海洋学 海洋学
- 气候科学 气候科学
- 海洋生态海洋生态学
背景情况:
- 海洋热浪 (MHWs) 是地表水域中异常温暖的事件,具有重大影响.
- 在全球范围内,人们对MHW的垂直结构知之甚少.
- 在MHW期间,表面变暖可以扩展到更深的海洋层.
研究的目的:
- 根据其垂直热结构对MHW进行分类.
- 调查不同类型的MHW的空间分布和影响因素.
- 分析MHW区域和深度的趋势.
主要方法:
- 利用Argo分析浮动数据来识别MHW的垂直结构.
- 将MHW分为四种类型:浅层,地下反向,地下强化和深层.
- 分析了空间模式和与海洋动态的相关性.
主要成果:
- 确定了四种不同的MHW垂直结构类型.
- 发现了每个MHW类型的特定度分布.
- 在过去二十年中,观察到MHW面积和深度的增长趋势.
结论:
- MHW的垂直结构受到行星波浪和旋等海洋动态的影响.
- 所有MHW类型都显示出日益增长的趋势,表明对气候变暖的反应.
- 这项研究增强了对MHW驱动因素和生态后果的理解.
相关概念视频
01:20Mechanisms of Heat Transfer II
3.3K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.3K
01:14Mechanisms of Heat Transfer
339
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
339
01:14Mechanisms of Heat Transfer I
4.3K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.3K
01:19Mechanism of heat transfer
1.2K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.2K
02:46Quantifying Heat
54.6K
Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a...
54.6K
01:21Isochoric and Isobaric Processes
3.5K
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...
3.5K