A financial contract concluded by two or more parties to derive the future value of related assets.

Weather derivatives include over-the-counter trading and futures options trading of all organizations. OTC market participants mainly trade temperature, rainfall and other indexes in the form of swaps and options.

Catastrophe derivatives include catastrophe insurance futures, catastrophe swaps, catastrophe options, natural disaster risk options and futures, which are mainly based on weather conditions and have little to do with market factors such as real interest rates.

Therefore, "weather derivative financial products" and "catastrophe derivative products" are financial instruments to avoid meteorological risks.