The Copenhagen World Climate Conference, also known as the Copenhagen United Nations Climate Change Conference, was an important international conference held in Copenhagen, Denmark, in 20091February. The purpose of this meeting is to discuss how to deal with global climate change and its impact.

The Copenhagen Climate Conference has caused great controversy for the following reasons:

1. Distribution of responsibilities and obligations: One of the main disputes at the meeting was the distribution of responsibilities and obligations between developed and developing countries in dealing with climate change. Developing countries believe that developed countries should bear more responsibilities, because they have emitted a lot of greenhouse gases in the past few decades, while developing countries need more time and resources to develop their economies. However, developed countries believe that developing countries should also bear corresponding obligations, because their emissions are also increasing.

2. Financial and technical support: Another controversial point is how much financial and technical support developed countries should provide to developing countries to help them cope with climate change. Developing countries believe that developed countries should provide more financial and technical support to help them reduce greenhouse gas emissions and adapt to the impact of climate change. However, developed countries believe that they should not bear all the burdens.

3. Emission reduction targets and agreements: Another controversial point at the meeting was what emission reduction targets and agreements countries should set. Many countries want to set a legally binding global emission reduction target to ensure that countries can effectively fulfill their commitments. However, some countries are opposed to setting legally binding targets, believing that this limits their economic development.

4. Transparency and supervision: the transparency and supervision mechanism of countries in dealing with climate change is also one of the controversial points of the meeting. Many countries hope to establish a global monitoring mechanism to ensure that countries can effectively fulfill their commitments made at the conference. However, some countries oppose such a mechanism, believing that it violates their sovereignty.

Generally speaking, the controversy in Copenhagen Climate Conference is mainly caused by the different positions and interests of countries in dealing with climate change. Although the meeting finally reached the Copenhagen Accord, there are still disputes in many aspects.