polar indicator

简明释义

极性指示器

英英释义

例句

1.The polar indicator on the map indicates the orientation of the geographical poles.

地图上的极性指示器指示地理极点的方向。

2.In navigation systems, a polar indicator helps pilots maintain their course over long distances.

在导航系统中，极性指示器帮助飞行员在长距离内保持航向。

3.The compass uses a polar indicator to show the direction of the magnetic north.

指南针使用极性指示器来显示磁北的方向。

4.Marine vessels rely on a polar indicator for accurate positioning in open waters.

海洋船只依赖于极性指示器在开阔水域中进行准确定位。

5.A polar indicator is crucial for ensuring that your satellite dish is correctly aligned.

极性指示器对于确保卫星天线正确对准至关重要。

作文

In the realm of climate science and environmental studies, the term polar indicator refers to various biological or physical parameters that signify changes in polar regions. These indicators are crucial for understanding the impacts of climate change, as they provide valuable insights into the health of ecosystems and the overall state of our planet. For instance, the melting of ice caps is one of the most visible polar indicators, reflecting rising global temperatures. When we observe these changes, it is essential to analyze their implications not only for the polar regions but also for the entire Earth. The Arctic and Antarctic regions serve as barometers for climate change, and their transformation can have far-reaching consequences.One of the primary polar indicators is the decline in sea ice extent. Satellite imagery has shown a significant reduction in sea ice over the past few decades, which directly affects wildlife habitats. Species such as polar bears and seals depend on ice-covered regions for hunting and breeding. As the ice diminishes, these animals face challenges in finding food and shelter, leading to population declines. This situation illustrates how polar indicators can reveal the interconnectedness of climate systems and biodiversity.Another important polar indicator is the increase in ocean temperatures. Warmer waters can disrupt marine ecosystems, causing shifts in species distribution and affecting the food chain. For example, fish populations may migrate toward cooler waters, impacting fishing industries and local economies. Therefore, monitoring these temperature changes is vital for sustainable resource management.Additionally, the phenomenon known as permafrost thaw is a significant polar indicator. Permafrost holds vast amounts of carbon dioxide and methane, two potent greenhouse gases. As it thaws due to rising temperatures, these gases are released into the atmosphere, exacerbating global warming. Understanding this process is critical for predicting future climate scenarios and implementing effective mitigation strategies.Furthermore, the presence of certain species in polar regions can also act as polar indicators. For instance, the health of phytoplankton populations is essential for oceanic health, as they form the base of the marine food web. Monitoring changes in their abundance can provide insights into the overall health of the marine ecosystem and its response to climate change.In conclusion, polar indicators play a pivotal role in climate science, offering essential data about the state of our planet's polar regions. By studying these indicators, scientists can better understand the effects of climate change and develop strategies for conservation and adaptation. As global citizens, it is our responsibility to heed the warnings presented by these polar indicators and take action to protect our environment for future generations. The health of our planet depends on the actions we take today, and recognizing the importance of polar indicators is a crucial step in that direction.

在气候科学和环境研究领域，术语极地指标指的是各种生物或物理参数，这些参数表明极地地区的变化。这些指标对于理解气候变化的影响至关重要，因为它们提供了有关生态系统健康和我们星球整体状态的宝贵见解。例如，冰盖的融化是最明显的极地指标之一，反映了全球气温的上升。当我们观察这些变化时，分析它们对极地地区及整个地球的影响是至关重要的。北极和南极地区作为气候变化的晴雨表，它们的转变可能会产生深远的后果。其中一个主要的极地指标是海冰范围的减少。卫星图像显示，在过去几十年中，海冰显著减少，这直接影响了野生动物栖息地。北极熊和海豹等物种依赖于冰封区域进行捕猎和繁殖。随着冰层的减少，这些动物在寻找食物和庇护所方面面临挑战，导致种群下降。这种情况说明了极地指标如何揭示气候系统和生物多样性之间的相互联系。另一个重要的极地指标是海洋温度的上升。温暖的水域可能会干扰海洋生态系统，导致物种分布的变化并影响食物链。例如，鱼类种群可能迁移到更凉爽的水域，从而影响渔业和当地经济。因此，监测这些温度变化对于可持续资源管理至关重要。此外，称为永久冻土融化的现象是一个重要的极地指标。永久冻土储存着大量的二氧化碳和甲烷，这两种温室气体都具有强大的温室效应。随着温度上升，永久冻土融化，这些气体释放到大气中，加剧全球变暖。了解这一过程对于预测未来的气候情景和实施有效的减缓策略至关重要。此外，某些物种在极地地区的存在也可以作为极地指标。例如，浮游植物种群的健康对海洋健康至关重要，因为它们构成了海洋食物链的基础。监测它们丰度的变化可以提供有关海洋生态系统整体健康及其对气候变化响应的见解。总之，极地指标在气候科学中发挥着关键作用，提供了有关我们星球极地地区状态的基本数据。通过研究这些指标，科学家可以更好地理解气候变化的影响，并制定保护和适应的策略。作为全球公民，我们有责任倾听这些极地指标所发出的警告，并采取行动保护我们的环境，为子孙后代创造更好的未来。我们星球的健康取决于我们今天采取的行动，认识到极地指标的重要性是朝着这个方向迈出的关键一步。