A “national communication” is a kind of report submitted by countries that have ratified the United Nations Framework Convention on Climate Change (UNFCCC).  Developed countries are required to submit national communications every four years and developing countries should do so.    Some least developed countries have not submitted national notifications in the last five to fifteen years, mainly due to capacity constraints. The 32-page document sets out a framework for global action on climate change, including climate change mitigation and adaptation, support for developing countries, as well as transparency of reporting and strengthening of climate targets. Here`s what he wants to do: Iran, Iraq and Libya — all among the 14 members of the Organization of the Petroleum Exporting Countries (OPEC) — and conflict-torn states like Yemen and South Sudan have not ratified the deal. Anxious to “significantly reduce the risks and effects of climate change,” the agreement calls for the average increase in global temperature over this century to be well below 2 degrees Celsius, while striving to limit the increase in temperatures to 1.5 degrees. It also calls on countries to work to ensure that global greenhouse gas emissions are offset as quickly as possible and become climate neutral by the second half of this century at the latest. To achieve these targets, 186 countries responsible for more than 90% of global emissions presented carbon reduction targets known as “Planned National Contributions” (INDCs) ahead of the Paris conference. These targets set out each country`s commitments to reduce emissions (including conservation of carbon sinks) by 2025 or 2030, including overall CO2 emission reduction targets and individual commitments from some 2,250 cities and 2,025 companies. The agreement stipulates that it would only enter into force (and therefore fully operational) if 55 countries emitting at least 55% of global greenhouse gas emissions (according to a list established in 2015)  ratify, accept, approve or accede to the agreement.
  On April 1, 2016, the United States and China, which together account for nearly 40% of global emissions, made a joint statement confirming that the two countries would sign the Paris Climate Agreement.   175 parties (174 states and the European Union) signed the agreement on the first day of its entry for signature.   On the same day, more than 20 countries made a declaration of intention to accede as soon as possible in order to accede in 2016. With ratification by the European Union, the agreement obtained enough parts to enter into force on 4 November 2016. As climate change promotes temperature rise and extreme weather events, it endangers our air, water and food. spread of the disease; and endangers our home and safety. We are facing a growing public health crisis. Before the Paris climate talks, President Obama`s negotiators wanted to make sure it would take time for the U.S. to pull out in the event of a change in direction. But even if the US decided to reinstate the deal, it would have consequences for a withdrawal – even for a few months. A preliminary study on the implications of inventory was published in Nature Communications in April 2020.
Based on a public policy database and an analysis of multi-model scenarios, the authors showed that the implementation of current policies by 2030 leaves an average emission gap of 22.4 to 28.2 GtCO2eq, with the best ways to achieve the Paris targets, well below 2°C and 1.5°C. .