Summary/Abstract
United in Science 2020 presents a unified assessment of the state of our Earth system, detailing how emissions have evolved in 2020, and providing projections for the critical years ahead. The report further addresses key thematic issues on the front lines of climate change, such as water, oceans and the cryosphere and highlights the vulnerability of land-based, marine and air observing systems which are essential to underpin our understanding of climate science.
The report examines, among other related topics, global fossil CO2 emissions, global climate from 2016-2020, changes to the ocean and cryosphere, observational data, and the gaps between emissions pledges and safe emissions levels.