A very happy new year to all followers, colleagues, and partners who trust & collaborate with us on developing the unique Near Real Time (NRT) Atmosphere portfolio CopernicusSentinel-3 exclusively procured by EUMETSAT!
And here the 1st 2023 maps of NRT aerosols & fires (day & night)!
The animation below shows all the fires detected this month operationally by Sentinel-3 A+B satellites, over America, during night (black background), and day (white background) times. The color bar refers to the fire radiative power (FRP) (in MW) integrated at 0.5 deg resolution.
Several regions in South-America between northern Argentina, Bolivia and the Brazilian Amazon have been experiencing unusually late active fires. Only infrequent few hot spots can be observed in North-America.
At EUMETSAT, we continuously evolve our satellite products: an iterative cycle of Science => Operational => Science => Operational… to enhance the quality.
Very happy to announce the public release of Collection 3.0 of the Copernicus Sentinel-3 Near Real Time (NRT) Aerosol product, operationally available from 3.11.2022 on-wards!
We have worked hard the last 12 months to address new developments expressed by some of our users, or identified from expert analyses on our side. Everything is described in our webpage & user product notice. Check out here.
Additional documentation (updated ATBD & Validation report) to be published very soon!
A major achievement is the design and implementation of a new classification – Naive Probabilistic – mask (cloud, snow, aerosol) to increase the coverage of aerosol events over oceans & as highlighted by our colleagues from the Copernicus Atmospheric Monitoring Service (CAMS).
Additional achievements are: – the implementation of a Quality Indication (QI) ranking system per aerosol pixel.For example, previous animation show the best QI (= 3). – the improvement in vegetation and bare soil modelling allowing a reduction of a bias over all land surfaces.
Check out all new maps, on EUMETSAT METIS website. And report us your feedback. We continue some evolution. Stay tuned for new works coming in the next quarters!
Big kudos to all EUMETSAT scientific, system engineers, and operator Colleagues for their involvement in this operational deployment! And great thanks to all experts who have listened to our ideas and give us feedback and endorsements such as the Sentinel-3 Sea and Land Surface Temperature (SLSTR) Quality Working Group (QWG), Sentinel-3 Validation Team (S3VT) Atmosphere, and CAMS!
Let’s continue our partnership!
Announcement of Collection 3.0 of Copernicus Sentinel-3 NRT Aerosols here
METIS platform – Live images of Copernicus Sentinel-3 NRT Aerosols here
The Copernicus program from the European Commission here
Sentinel-3 Atmosphere portfolio led by EUMETSAT here
Fires in Western Europe, Spain, France (e.g. Gironde and La Teste De Buch) are not only dangerous for the immediate surrounding population. But their emission of fine particles aerosols is of high concern. These smoke pollution can spread over long distance & impact on human health.
Fires are hitting us in Western Europe, especially in Spain, Portugal, and France. This is a very concerning situation for all surrounding population. We provide in Near Real Time (NRT – i.e. < 3h) information to all operational users thanks to OFRaP-CS3, the reference CopernicusSentinel-3 NRT Fires processor of EUMETSAT.
These days, in April 2022. quite a high load of dust particles can be clearly observed in the Mediterranean basin. They are notably visible with Copernicus Sentinel-3, see example of pictures from the Level 2 (l2) Near Real Time (NRT) aerosol product (by EUMETSAT from the OSSAR-CS3 Processor v3.0 – Collection 2.0)
These aerosols mostly originate from Sahara and travel toward South Europe.
There is not only one type of clouds, but many of them, with diverse properties leading to various ways to visualize them when looking at our satellite measurements. Here an example with the Copernicus Sentinel-3 (S3) A Sea & Land Surface Temperature Radiometer (SLSTR) over Amazonia.
SLSTR has a special channel at 1.3 um in which water vapor (H2O) so much absorbs that no signal at the top of the atmosphere may be measured. Unless clouds at a very high altitude are present, shielding then a large fraction of the H2O column in the atmosphere. Consequently, a bright signal spikes up and elevated clouds shine!
From the picture above, snow & ice clouds are primary the highest one! Anything else lower, such as surface and fractional low clouds, seems “invisible”. They cannot be “seen”.
No doubt winter has come in Europe! The Earth inclination has changed.
As observed last Winter with GOME-2 UltraViolet (UV) measurements, a big change in the effective UV irradiance reaching the Earth surface is also seen over the day between last July and nowadays.
Here below is an example with the estimated reduced Vitamine D production in our skin as a direct consequence. These pictures are from the ESA / KNMI Tropospheric Emission Monitoring Internet Service (TEMIS). Satellite UV dose is computed from the assimilated global O3 – ozone field at local solar noon, and with surface downwelling solar (SDS) radiation & cloud information measured by the Meteosat Second Generation (MSG) satellites led by the EUMETSAT agency.
A recent work achieved by my colleagues of the National Observatory of Athens (NOA): 9 years of observations acquired by the CALIOP space-borne instrument were combined with EARLINET ground-based measurements to provide a climatology of desert dust particles over South and East Asia.
Having such a knowledge is important for many research studies focused on atmospheric transport and climate effect of dust.
You can see more details on my webpage here, and the paper of Proestakis et al. (2018) published in the Atmospheric Chemistry and Physics (ACP) journal here.