Hello,
I am browsing L2A images from january 2017 to august 2019 on Copernicus Open Access Hub but no images are found before april 2018. However when I browse L1C images there is no problem.
why is this occuring?
thanks
Hello,
I am browsing L2A images from january 2017 to august 2019 on Copernicus Open Access Hub but no images are found before april 2018. However when I browse L1C images there is no problem.
why is this occuring?
thanks
Hello
Google is your friend…
" Level-2A products are systematically generated at the ground segment over Europe since March 2018, and the production was extended to global in December 2018. Level-2A generation can also be performed by the user through the Sentinel-2 Toolbox using as input the associated Level-1C product (demonstrated below)."
https://sentinels.copernicus.eu/web/sentinel/user-guides/sentinel-2-msi/product-types/level-2a
Cheers
Jan
S2 MPC Operations Manager
Hello Jan,
Last year, I downloaded L2A products of “2017” as I listed below.
However now I cannot see these images on the search results when I browse. Thats why I asked this question.
By the way I know It is possible to generate L2A product from L1C in SNAP but my question was not about it.
Thanks.
Hi @PiriReis
The products you identify are pre-operational production L2A products (S2MSI2Ap).
https://scihub.copernicus.eu/news/News00179
Cheers
Jan
Hello.
I’m replying to this conversation because it seems the closest to my question.
As far as I know, this is an essential timeline of L2A availability:
I know I can process L2A from L1C by myself using Sen2Cor, but my question is: is there a technical reason for which no Sentinel-2 L2A product sensed before March 2017 was made available by Copernicus? I mean, for example, possible constraints in older L1C processing baselines, different radiometric quality levels, or something else.
Thanks in advance
Hello @laterza
the technical reason is there wasn’t an L2A processor before that date
However, we are currently preparing to reprocess the whole archive, including all products up to L2A (where possible).
Cheers
Jan
Jan Jackson
OPT-MPC S2 Technical Manager
Thank you, Jan!
we are currently preparing to reprocess the whole archive, including all products up to L2A
This sounds great!
(where possible)
So my question still stands: are there technical reasons for which it will not be possible sometimes?
Thank you
Hello @latzera
As I understand it, there shouldn’t be. I’m typing this with my fingers crossed We have been validating the processor against early orbits, and this hasn’t thrown up any issues in data quality, but the process is still ongoing.
Cheers
Jan
Jan Jackson
OPT-MPC S2 Technical Manager