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Watch EarthCARE launch live

28/05/2024 22712 views 34 likes

ESA / Applications / Observing the Earth / FutureEO / EarthCARE

ESA's EarthCARE mission is ready for lift-off! Follow the live coverage and launch today 28 May on ESA WebTV or ESA YouTube. Live coverage begins at 23:30 CEST where we'll hear from our mission scientists and spacecraft operators, then follow the launch on a SpaceX Falcon 9 from Vandenberg Space Force Base, California, expected at 00:20 CEST.

About EarthCARE - ESA's cloud and aerosol mission

EarthCARE, the most complex of all of ESA’s Earth Explorer missions, will quantify and reduce the uncertainty about the role that clouds and aerosols play in heating and cooling Earth’s atmosphere – contributing to our better understanding of climate change.

Understanding and monitoring Earth’s radiation balance is crucial for addressing climate-related issues and is something that can only be done from space.

Developed as a cooperation between ESA and the Japan Aerospace Exploration Agency (JAXA), EarthCARE will examine the role that clouds and aerosols play in reflecting solar radiation back into space and also in trapping infrared radiation emitted from Earth’s surface.

EarthCARE will, for the first time, measure vertical profiles of cloud particles and aerosols, and their fall speed – providing new insights into interactions between clouds, aerosols and precipitation. It will also register the distribution of water droplets and ice crystals and how they are transported in clouds.

This essential data will improve the accuracy of both cloud development models and their behaviour, composition and interaction with aerosols, as well as improve future climate models and support numerical weather prediction.

Coming soon: EarthCARE

EarthCARE is equipped with four state-of-the-art instruments that work together to provide a holistic view of the interplay between clouds, aerosols and radiation.

The satellite’s atmospheric lidar delivers cloud-top information and profiles of thin clouds and aerosols. The cloud profiling radar, provided by JAXA, provides information on the vertical structure, motion and internal dynamics of clouds. The multispectral imager offers a wide-scene overview in multiple wavelengths, and the broadband radiometer directly measures reflected solar radiation and outgoing infrared radiation.

By using all four instruments at the same time, our understanding on the impact of clouds and aerosols on reflecting sunlight and trapping heat can be directly correlated with measured reflected solar radiation and emitted thermal radiation combined on one satellite.

EarthCARE will orbit Earth at an altitude of around 400 km which is as low as possible to optimise the use of both lidar and radar. It will fly in a polar orbit, crossing the equator in the early afternoon, to optimise daylight conditions.

The White Dragon

According to JAXA tradition, satellites are also given nicknames in addition to their ‘official’ names. The nickname chosen for EarthCARE is ‘Hakuryu’ or ‘White Dragon’ in Japanese.

The name ‘Hakuryu’ embodies the distinctive characteristics of the satellite's appearance, with its white body and solar panel resembling a long tail. In Japanese mythology, dragons are ancient and divine creatures that govern water and fly in the sky: an appropriate metaphor for a mission that will study clouds and aerosols.

Additionally, the launch year of EarthCARE in 2024 coincides with the Japanese Year of the Dragon, known as ‘tatsu-doshi.’