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SpaceX to launch ESA’s EarthCARE on a Falcon 9 launch from Vandenberg Area Pressure Base – Spaceflight Now

May 28, 2024
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SpaceX to launch ESA’s EarthCARE on a Falcon 9 launch from Vandenberg Area Pressure Base – Spaceflight Now
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A rendering of the Earth Cloud Aerosol and Radiation Explorer (EarthCARE) spacecraft onboard a SpaceX Falcon 9 second stage because the payload fairings deploy. Graphic: ESA

The European Area Company is making ready to launch its newest Earth observing satellite tv for pc, designed to higher perceive the local weather. The Earth Cloud Aerosol and Radiation Explorer (EarthCARE) has 4 devices which can research clouds and aerosols across the Earth “to enhance the accuracy of local weather fashions and help numerical climate prediction.”

ESA’s spacecraft will launch onboard a SpaceX Falcon 9 rocket from Area Launch Complicated 4 East (SLC-4E) at Vandenberg Area Pressure Base. Liftoff is about for 3:20 p.m. PDT (6:20 p.m. EDT, 2220 UTC).

Spaceflight Now can have stay protection starting about half-hour previous to liftoff.

The Falcon 9 first stage booster supporting this mission, tail quantity B1081 within the SpaceX fleet, will launch for a seventh time. It beforehand launched Crew-7; SpaceX’s twenty ninth Business Resupply Providers mission (CRS-29); NASA’s Plankton, Aerosol, Cloud, ocean Ecosystem (PACE); the Transporter-10 rideshare mission; and two Starlink flights (6-34 and 8-1).

Rather less than eight minutes after liftoff, B1081 will return to VSFB to landing at Touchdown Zone 4 (LZ-4). This would be the nineteenth touchdown at LZ-4 and the 314th booster touchdown thus far.

The Airbus-built Earth Cloud Aerosol and Radiation Explorer (EarthCARE) spacecraft is boxed up in a cleanroom earlier than it was shipped to California for launch. Picture: Airbus

Initially, the spacecraft was set to launch on a Russian Soyuz rocket. ESA introduced a launch settlement with Arianespace in Oct. 2019 and famous a launch interval that opened in June 2022 from the Guiana Area Middle in French Guiana. Nonetheless, following Russia’s invasion of Ukraine in February 2022, ESA Director Common Josef Aschbacher introduced in Oct. 2022 that EarthCARE would launch on Europe’s Vega-C rocket.

Plans shifted once more when a static fireplace check on the trail to Vega-C’s return-to-flight marketing campaign sidelined that rocket till possible late 2024. That brought on ESA to as soon as once more change plans and the mission was then assigned to SpaceX’s Falcon 9 rocket.

Europe’s lack of the Soyuz and lack of its personal launchers put a number of different spacecraft on comparable paths to EarthCARE. SpaceX has beforehand been tapped to launch Euclid in 2023, two Galileo missions (the primary of which launched in late April) and Hera, which can launch in Oct. 2024.

Clouds and aerosols

The targets of the EarthCARE spacecraft bear some resemblance to NASA’s PACE spacecraft, which launched earlier this 12 months utilizing the identical Falcon 9 booster. Each satellites are designed to extend the understanding round cloud formation and the position of the ambiance within the total local weather.

EarthCARE can also be a joint effort between ESA and the Japanese Aerospace Exploration Company (JAXA), which supplied one of many spacecraft’s 4 primary devices. In line with JAXA custom, the satellite tv for pc has a Japanese nickname: Hakuryu (White Dragon in Japanese).

#EarthCARE is launching quickly!
Do you know that in keeping with @jaxa_en custom, satellites are additionally given nicknames along with their ‘official’ names. The nickname chosen for EarthCARE is ‘Hakuryu’ or ‘White Dragon’ in Japanese.

The identify ‘Hakuryu’ embodies the distinctive… pic.twitter.com/RLFNWDmK4e

— ESA Earth Commentary (@ESA_EO) May 27, 2024

The spacecraft weighs about 2,200 kg (4,850 lbs.) and has a complete size of about 17.2 m (56.4 ft.). Will probably be deployed to a sun-synchronous Earth orbit at 393 km in altitude and a 97.05° inclination. It’s designed to totally cowl the Earth each 25 days and has an anticipated mission lifespan of a minimum of three years (together with a six-month commissioning interval).

JAXA’s contribution is the Cloud Profiling Radar instrument in addition to information processing for the instrument whereas it’s on orbit. The CPR is one among two energetic devices on EarthCARE, together with the Atmospheric Lidar.

The CPR is a Doppler-capable radar, that includes a 2.5 m (8.2 ft.) antenna, which is ready to peer by means of mild precipitation and clouds “offering detailed insights into their vertical construction and velocity, particle dimension distribution and water content material,” in keeping with ESA.

Clouds play a vital position in Earth’s local weather system by reflecting daylight again into house, generally known as the albedo impact, and by trapping warmth radiating from Earth’s floor, a part of the greenhouse impact. Graphic: ESA

The Atmospheric Lidar is a half-tonne instrument that makes use of about 500 watts to generate an ultraviolet wavelength laser beam. In live performance with the CPR and EarthCARE’s Multispectral Imager, it could possibly “derive cloud prime peak and aerosol bodily properties, in addition to classification of the assorted atmospheric elements.”

The 2 passive devices on the spacecraft are the Multispectral Imager and the Broadband Radiometer. The MI is designed to collect photographs with a 500 m (1640.4 ft.) decision over a 150 km (93.2 mi.) swath.

The imager additionally options seven channels: seen, near-infrared, two shortwave infrared and three thermal-infrared.

“These photographs present context to assist interpret the measurements made by EarthCARE’s two energetic devices, the lidar and the radar, that gather info solely from a skinny curtain beneath the satellite tv for pc, and to increase that info into 3D scenes,” ESA mentioned.

Lastly, the Broadband Radiometer “offers correct measurements of the mirrored photo voltaic and emitted thermal radiation, co-located with the views from the cloud profiling radar and the atmospheric lidar.” To do that, it makes use of three telescopes (forward-looking, backward-looking and nadir) “to derive the top-of-the-atmosphere fluxes over a large wavelength band.”

The Earth Cloud Aerosol and Radiation Explorer (EarthCARE) encapsulated inside Falcon 9 payload fairings previous to its launch on Might 28, 2024. Picture: SpaceX by way of ESA





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