Impacts on weather
Temperature Extremes:
There is a clear trend of increasing average global temperatures, which leads to more frequent and severe heatwaves. Conversely, in some regions, changing atmospheric patterns can also lead to occasional extreme cold events.
Altered Precipitation Patterns:
Many areas are experiencing changes in precipitation, with some regions seeing more intense rainfall and increased risk of flooding, while others are facing more drought conditions due to decreased rainfall.
More Intense Storms:
There is evidence that hurricanes and typhoons are becoming more intense, with higher wind speeds and greater precipitation, likely due to warmer ocean surface temperatures.
Changing Seasons:
The timing and length of seasons are changing, with earlier springs, longer summers, and shorter winters in many temperate regions. This can affect agriculture, wildlife, and the prevalence of certain diseases.
Shifts in Wind Patterns:
Large-scale wind patterns, such as the jet stream, are experiencing shifts and changes in their typical behavior, which can lead to prolonged weather conditions, such as heatwaves or cold spells.
Increased Evaporation:
Higher temperatures lead to increased evaporation rates, which can exacerbate drought conditions and impact water availability.
Ocean Current Changes:
Changes in weather patterns are linked to changes in ocean currents, which can alter climate patterns at regional and global scales.
Glacial Melt and Cold Freshwater Injection:
The melting of glaciers and ice sheets is injecting cold freshwater into the oceans, which can affect ocean currents and, consequently, weather patterns.
Expansion of Arid Climates:
Some regions are experiencing an expansion of arid and semi-arid climates, leading to desertification and changes in local weather conditions.
Increased Atmospheric Moisture:
Warmer air can hold more moisture, which can lead to more intense precipitation events when it does rain, increasing the risk of flash floods.
Thunderstorms and Tornadoes:
There is some evidence to suggest that severe thunderstorms and potentially tornadoes may become more frequent or intense in some areas due to the increased energy in the atmosphere.
Snow and Ice Storms:
While warmer temperatures generally lead to less snow overall, increased atmospheric moisture can lead to heavy snowfall events when conditions are right.