Several international agreements and frameworks were adopted in recent three years that shaped national policy making. The Paris agreement on climate change is among those. This is a new legal agreement for the post-2020 climate regime that sets up concrete climate targets and specifies the process towards their achievement. The concept of the Nationally Determined Contribution (NDCs) provides countries an opportunity to contribute to the achievement of the common goal. To assess the progress, the global stocktake will be organized every five years guided by the Talanoa Dialogue Platform. The process of Talanoa involves the sharing of ideas, skills and experience through storytelling. WMO and the broader greenhouse gas (GHG) community have numerous tools and methods to share in support of climate actions. WMO plays an important role in establishment of the common standards, measurement methods and quality assurance for the GHG and other observations of atmospheric composition, development of high quality atmospheric transport and data inversion models, leveraging capabilities across programs and nations and building capacity in developing nations. In 2015 WMO initiated the Integrated Global Greenhouse Gas Information System (IG3IS) that aims to support the actions of nations, sub-national governments, and the private sector to reduce climate-disrupting GHG emissions through a sound-scientific, measurement-based approach. Such information will improve knowledge of the national emissions; help to identify large and additional emission reduction opportunities, and will provide nations with timely and quantified guidance on progress towards their emission reduction strategies and pledges (e.g., NDCs). IG3IS principles, good practices and implementation activities are summarized in the Implementation Plan to be finalized by June 2018. For many nations climate negotiations are closely linked with the air quality policy that can provide additional benefits for human health, agriculture and ecosystems.  The IG3IS initiative stresses that there are multiple players in the field and research projects like CHE can serve as a vehicle for IG3IS implementation by adopting the IG3IS principles and good practice standards.