关于全球气候变化（也称为全球变暖）的讨论可能会非常迅速地变得非常复杂。幸运的是，它可以简单地解释。以下是您需要了解的气候变化的基础知识：数百万年来，在地球的地质历史中，气候已经多次变暖和变冷。然而，我们在过去几十年中观察到的全球平均温度升高异常迅速且非常大。它转化为地球上几乎所有地方温暖的气温和温暖的海水。温度的升高导致世界上大部分冰川的融化增加。此外，厚厚的格陵兰岛和南极洲冰盖正在减少体积，海冰覆盖了越来越小的北极地区，同时也越来越薄。美国大部分地区的冬季积雪较薄，并且在冬季不会持续很长时间。由于冰川融化，海水水位不断上升，水温升高，占用空间更大。虽然气候这个词指的是温度和降水的许多方面的长期统计数据，但天气是一种更直接的现象，而且是我们每天都在外面感受到的。全球气候变化正在以不同的方式改变我们对天气事件的体验，这取决于我们居住的地方。常见的变化包括更频繁的暴雨事件，常规的冬季融化或持续的干旱。人类活动在大气中释放出许多产生温室效应的气体。温室气体阻挡了地球表面反射的太阳能量。然后将这些热量重新导向地面，从而提高温度。大多数观察到的变暖可归因于这些气体。最重要的温室气体是二氧化碳和甲烷。当我们提取，加工和燃烧煤，石油和天然气等化石燃料用于电力，制造和运输时，它们就会被释放出来。这些气体也是在工业活动期间，当我们为住房和农业清理土地以及在一些农业活动期间产生的。在自然太阳周期中，地球的表面温度会随着微小的变化而上升和下降。然而，这些太阳活动周期及其产生的变化是很好理解的，并且比温室气体驱动的那些更不重要。
澳大利亚西悉尼大学论文代写：海平面上升
Discussions about global climate change (also known as global warming) can become very complex very quickly. Fortunately, it can be explained simply. Here’s the basics of climate change you need to know: For millions of years, in the geological history of the Earth, climate has warmed and cooled many times. However, the global average temperature increase we have observed over the past few decades has been exceptionally rapid and very large. It transforms into warm temperatures and warm waters in almost every part of the planet. The increase in temperature has led to an increase in the melting of most of the world’s glaciers. In addition, the thick Greenland and Antarctic ice sheets are shrinking in size, and sea ice covers smaller and smaller Arctic areas, while also becoming thinner. Winter snow is thin in most parts of the United States and does not last long in winter. As the glaciers melt, the water level of the seawater continues to rise, the water temperature rises, and the space is occupied. Although the term climate refers to long-term statistics on many aspects of temperature and precipitation, weather is a more direct phenomenon and is felt outside every day. Global climate change is changing our experience of weather events in different ways, depending on where we live. Common changes include more frequent rainstorm events, regular winter melts or persistent droughts. Human activities release many greenhouse gases in the atmosphere. Greenhouse gases block the amount of solar energy reflected on the Earth’s surface. This heat is then redirected to the ground to increase the temperature. Most of the observed warming can be attributed to these gases. The most important greenhouse gases are carbon dioxide and methane. When we extract, process and burn fossil fuels such as coal, oil and natural gas for electricity, manufacturing and transportation, they are released. These gases were also produced during industrial activities when we cleared the land for housing and agriculture and during some agricultural activities. During the natural solar cycle, the surface temperature of the Earth rises and falls with small changes. However, these solar activity cycles and their resulting changes are well understood and less important than those driven by greenhouse gases.