It's too hot this winter

Climate change, natural climate variation and other reasons.

1. Climate change: Global climate change is one of the main causes of abnormal weather. Due to the greenhouse gas emissions caused by human activities, the earth's climate system has changed. Causes the temperature to rise and the seasonal changes are unstable, including the unusually high temperature in winter.

2. Natural climate variation: In addition to climate change, natural climate variation also leads to unusually hot winter. El Nino phenomenon refers to the abnormal rise of ocean surface temperature in the equatorial region of the Pacific Ocean, which will have an important impact on the global climate. The El Nino event caused the temperature to rise in some areas in winter.