IPCC Working Group I (WG I)
<p>The IPCC Working Group I (WG I) assesses the physical scientific aspects of the climate system and climate change.</p>
<p>The main topics assessed by WG I include: changes in greenhouse gases and aerosols in the atmosphere; observed changes in air, land and ocean temperatures, rainfall, glaciers and ice sheets, oceans and sea level; historical and paleoclimatic perspective on climate change; biogeochemistry, carbon cycle, gases and aerosols; satellite data and other data; climate models; climate projections, causes and attribution of climate change. </p>
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