Water vapor does not drive climate. When temperature goes up, water evaporates, and when temperature goes down, water vapor condenses. Water vapor is a feedback, not a forcing.
The water resource like ocean has a major role in the earth’s weather and climate. Water vapor increases as the climate warm, which in turn tends to further warm in the atmosphere. And ocean has the ability to absorb, store, and transport heat from the sun. it also affect the atmospheric temperature and circulation around the world and sea water is the main source of most rainfall.
Water evaporated to the steam to affect the climate .
Climate and water are intimately connected. Water vapor is the major greenhouse gas. Water acts to heat, cool and protect our climate simultaneously.
Water has a moderating effect on climate, the water in our atmosphere and in our oceans prevent extreme and rapid changes of temperature, the oceans store heat for thousands of years and slowly absorb or release it slowing climate changes.
One example is deserts, they can be extremely hot during daytime and then the temperature can quickly drop over night to be cold.
Countries/Islands that are near oceans have what are called maritime climates which are generally milder.
Water vapor, not CO2, has been driving global temperature changes the past few decades.
Water vapor gets into the atmosphere from a number of sources. For instance, water vapor is consistently the most common volcanic gas, accounting for more than 60% of total emissions during a surface eruption. But it is water evaporating from the surface of the oceans that provides most of the water vapor in Earth's atmosphere. Tropospheric water vapor increases in close association with warming and this represents a major climate feedback. The condensation of water vapor into liquid or ice creates for clouds, rain, snow, and other forms of precipitation.
Most of the phenomena that we experience as weather is caused by water vapor. Less obviously, the latent heat of vaporization is one of the most important terms in the atmospheric energy budget on both local and global scales. The heat energy absorbed by liquid H2O as it turns into water vapor is later released into the atmosphere whenever condensation occurs. For example, latent heat release in atmospheric convection is directly responsible for powering destructive storms such as tropical cyclones and severe thunderstorms.
"Stratospheric water vapor concentrations decreased by about 10% after the year 2000. Here we show that this acted to slow the rate of increase in global surface temperature over 2000–2009 by about 25% compared to that which would have occurred due only to carbon dioxide and other greenhouse gases. More limited data suggest that stratospheric water vapor probably increased between 1980 and 2000, which would have enhanced the decadal rate of surface warming during the 1990s by about 30% as compared to estimates neglecting this change. These findings show that stratospheric water vapor is an important driver of decadal global surface climate change. "
Contributions of Stratospheric Water Vapor to Decadal Changes in the Rate of Global Warming
The authors conclude the paper by saying: “This work highlights the importance of stratospheric water vapor for decadal rates of warming based directly upon observations, illuminating the need for further observations and a closer examination of the representation of stratospheric water vapor changes in climate models aimed at interpreting decadal changes and for future projections.” In other words, we need to improve our theoretical knowledge, gather better data, and make more changes to those inaccurate climate models.
It rains and snows.
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