The prospect of a complete spectrally-resolved Earth Radiation Budget dataset from the inter-operation of new EO missions.

气候变化是社会面临的最大挑战之一，需要立即采取行动，防止最具破坏性或不可逆转的后果。但气候变化是一个情绪化的问题，国际参与者利用记录的变迁和未来气候预测的不确定性，将辩论政治化，并为不作为找借口。气候变化是一个舞台，在这里，对当今气候状况及其对人为排放的反应的准确、可靠的记录可以产生全球影响。然而，就气候监测和提供独立观测记录而言，这是一个激动人心的时刻，需要打破争论。最近选定了两个卫星任务，它们将为辩论提供真正的新数据。truth已被选为欧空局地球观察任务，在测量太阳反射域（气候系统的能量输入）方面提供了前所未有的精度，预计将于2027年发射，为期7-10年。FORUM最近还被选为欧空局地球探测任务，首次测量气候系统发射的长波辐射的中远红外部分，预计将于2026年发射，名义寿命为4年。结合正在运行的EUMETSAT IASI-NG仪器，在本世纪20年代末，我们将首次拥有一个能够以高光谱分辨率测量气候系统全部能量边界条件的空间气候观测站。IASI-NG仪器测量出的长波发射的近至中红外部分。该项目将研究这种独特的观测组合和计量方法的影响，以优化从它们的协同使用中获得的价值。

Climate change is a one of societies greatest challenges, needing immediate action to prevent the most damaging of irreversible consequences. But climate change is an emotive issue, where the vicissitudes of the records and uncertainty in future predictions of the climate is used by international players to politicise the debate & excuse inaction. Climate change is a theatre where an accurate, trustable record of the state of today's climate & its reaction to anthropogenic emissions can have global impact. However, it is an exciting time in terms of monitoring of the climate & the provision of independent observational records needed to cut through the argument. Two satellite missions have recently been selected that will provide genuinely new data to inform the debate. TRUTHS has been selected as an ESA EarthWatch mission, providing an unprecedented level of accuracy in measuring the solar-reflective domain - the energy input to the climate system, expected to be launched in 2027 with a 7-10 year mission. FORUM has also recently been selected as an ESA Earth Explorer mission, measuring the mid- far-infrared portion of the outgoing longwave emission of the climate system for the first time, expected to be launched in 2026 with a nominal lifetime of 4 years. Combined with the operational EUMETSAT IASI-NG instrument, which measures the near- to mid-IR portion of the outgoing longwave emission - in the late 2020s we will, for the first time, have a space climate observatory capable of measuring the full energetic boundary conditions of the climate system at high spectral resolution. This project will study the impact of this unique combination of observations & the metrological methods needed to optimise the value obtained from their synergetic use.