Principal Scientist at ECMWF, no longer posting on X. https://xitter.cf/t.co/vGXhOH5ClL
UK
Joined July 2019
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Goodbye X-osphere! I'll be posting into the blue sky from now on (same ID @robinjhogan). bsky.app/profile/robinjhogan…
Job opportunity at #ECMWF working on #EarthCARE lidar data assimilation! A great opportunity to join the ECMWF team working with the data from this exciting new satellite. The position may be held in Reading or Bonn, deadline for applications 15th Dec. jobs.ecmwf.int/Job/JobDetail…
Core-funded position at @ECMWF working on Convection in Global Weather Prediction! This is a fantastic opportunity to join the thriving community of researchers at ECMWF. The position can be held in Reading or Bonn, deadline for applications 25 November. jobs.ecmwf.int/Job/JobDetail…
Very pleased to see the first synergy retrievals from #EarthCARE revealed by @ESA today, showing how the combination of radar, lidar and radiometer can be used to estimate the properties of clouds and aerosol particles in the atmosphere! (1/3) esa.int/Applications/Observi…
I have worked on the "CAPTIVATE" algorithm that achieves this over the last ten years, along with my amazing colleagues @mason_shannon, Alessio Bozzo and Nicola Pounder - check out the paper we published last year (2/3). amt.copernicus.org/articles/…
First images from the third of #EarthCARE's four instruments! The 1.65, 0.87 and 0.67 micron reflectances from the multi-spectral imager (MSI) are shown as red, green and blue in the image on the left, enabling ice and liquid cloud to be distinguished. (1/3)
More #EarthCARE data!
The mission multispectral imager has also delivered the first images, showcasing various types of clouds and cloud temperatures worldwide.
This image shows a thunderstorm north of Naples in Italy on 17 July.
👈The true-colour part of the image on the left shows a very clear large single cloud.
👉The right part of the image, which uses the instrument’s thermal-infrared band, shows that the top of this storm cloud was about –50°C, and that the land below was about 30°C.
esa.int/Applications/Observi…
The 500-m resolution of the MSI reveals cloud structures in great detail, here showing orographic waves around the Kuril islands. The MSI provides essential contextual information for the radar, lidar and broadband radiometer. (2/3)
All four of #EarthCARE's instruments are now operating! The Atmospheric Lidar (ATLID) is currently being commissioned and we hope to see the first images from it in August - stay tuned! (3/3)
First light from #EarthCARE's Broadband Radiometer (BBR) and it's a beauty! The BBR measures reflected sunlight and emitted thermal infrared radiation in a 17-km swath centred on the radar/lidar, telling us the impact of clouds and aerosols on radiative energy flows. (1/3)
New week, new data from @esa_Earthcare instrument!
You are looking at the very first data from the Broadband radiometer: esa.int/Applications/Observi…
The broadband radiometer provides accurate measurements of the reflected solar and emitted thermal radiation.
#EarthCARE
ALT This image shows the measured brightness in the forward view along EarthCARE’s orbital path across the western Mediterranean, around a 1300 km stretch from northern Spain to Algeria. This brightness indicates how much solar energy is reflected back to space. While the data show a distinct transition between the coast of Spain and the Mediterranean Sea, there is little difference over the open sea. The switch from darker to brighter colours closer to the Algerian coast is down to the presence of aerosols and thin cloud.
What's great about #EarthCARE's BBR is (1) the amazing 650-m resolution in nadir view (compare to 10-20 km for CERES) and (2) the extra perspective from the three views. Look at the different directions of the shadows (in blue) cast by clouds at top & bottom of this image! (2/3)
We didn't know before launch that the #EarthCARE BBR pixel-level data would be so good, but the quality of these images suggests possibilities for studying the 3D radiative effect of clouds and evaluating high resolution models. (3/3)
Good luck to all the progressive parties in the UK tomorrow. I’ll be voting Labour but the main priority is to give the Conservatives a huge kicking for all the damage they have done, summarised here... (1/3)
theguardian.com/commentisfre…
…but expressed more poetically by Jonathan Pie (2/3)
xitter.cf/JonathanPieNews/status…
Announcing the second #EarthCARE launch - this time of the X account! Follow @esa_earthcare for detailed updates from the mission.
Think you know #clouds? Think again!
#EarthCARE will demystify these big and misty, often thin and wispy, and occasionally thunderous behemoths.
We’ll also shine a light on aerosols like pollution and dust, and how they and clouds regulate Earth's #climate.
Follow us for more!
Many of the #EarthCARE team, including myself, have been preparing for the launch of this satellite for over 20 years, so it is unbelievably exciting when the data finally start to arrive -- BBC article by @BBCAmos bbc.co.uk/news/articles/ce93…
Beautiful animation of the first data from #EarthCARE's Cloud Profiling Radar provided by @JAXA_en! youtube.com/watch?v=1wIHIE6_…
Robin Hogan retweeted
Congratulations @ESA and @JAXA_en on the release of the first amazing images from #EarthCARE! We are totally blown away by the quality of the radar data and are very excited to see the measurement of fall speeds from space for the very first time. 🧵1/2
The first results from #EarthCARE cloud profiling radar are here!
Here's how they look like and why you should be as excited as we are: esa.int/Applications/Observi…
The radar was provided by @JAXA_en and it's one of the four instruments aboard the satellite.
First light from #EarthCARE!!! This is an incredible moment - the first ever global measurements of cloud, snow and rain fall speeds. The reflectivity is beautifully detailed and the fall speeds are clearer than we could possibly have dreamed of! (1/4)
The first results from #EarthCARE cloud profiling radar are here!
Here's how they look like and why you should be as excited as we are: esa.int/Applications/Observi…
The radar was provided by @JAXA_en and it's one of the four instruments aboard the satellite.
My colleagues at @ECMWF have already begun to test the assimilation of #EarthCARE radar reflectivity into our model, with the aim of improving our weather forecasts. (3/4) ecmwf.int/en/about/media-cen…
This is only the beginning: the other three instruments on #EarthCARE (built by @ESA) are being turned on one-by-one: stay tuned for more exciting images and results over the coming months! (4/4)