Katarzyna Ewa Lewińska
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kelewinska.bsky.social
Katarzyna Ewa Lewińska
@kelewinska.bsky.social
Remote Sensing (EO) scientist @humboldteolab.bsky.social, @SilvisLab alumni

environmentalist
bicycle mechanic
F&SF enthusiast, retired geek
https://kelewinska.github.io/
A kind reminder to all @esa.int's #LPS25 attendees that today during the 𝐂.𝟎𝟓.𝟎𝟒 session at 𝟏𝟔:𝟏𝟓-𝟏𝟕:𝟒𝟓 (𝐇𝐚𝐥𝐥 𝐋𝟏/𝐋𝟐) I will present on the global availability of usable Landsat and Sentinel-2 data and how it impacts feasibility of analyses.
Hope to see many of you in the audience!
June 24, 2025 at 7:58 AM
If you are interested in scaling up your #remote_sensing analyses but do not know how, come for the inspiration to the @esa.int's #LPS25 session 𝗗.𝟬𝟰.𝟬𝟱 (𝗧𝗵𝗿 𝟮𝟲𝘁𝗵 𝗝𝘂𝗻 | 𝟴:𝟯𝟬-𝟭𝟭:𝟬𝟬 | 𝗛𝗮𝗹𝗹 𝗟𝟯) led by @kristofvantricht.bsky.social, @marccoru.bsky.social and me.
#BigData #Satellites #EO
June 22, 2025 at 7:38 PM
📣Attending @esa.int's #LPS25 next week?
Make sure to catch the 𝐂.𝟎𝟓.𝟎𝟒 session (𝐓𝐮𝐞 𝟐𝟒𝐭𝐡 | 𝟏𝟔:𝟏𝟓-𝟏𝟕:𝟒𝟓 | 𝐇𝐚𝐥𝐥 𝐋𝟏/𝐋𝟐), during which I will talk about 🌍 global 🛰️ #Landsat and #Sentinel-2 data availability and how it shapes feasibility of long-term analyses.
See you in Vienna!
June 20, 2025 at 8:30 AM
To celebrate the #ShowYourStripes Day a few places (or their approximations) i called home over the past years. (Sorry Madison WI, but you are not supported in the app :|)

it is scary... 🥵
June 19, 2025 at 6:51 AM
A daunting document outlining, among others, the future of the #Landsat program. Only a bunch of troglodytes could call the Landsat Next 'unaffordable', especially when its budget is like a drop comparing to the US military expenses.
www.nasa.gov/wp-content/u...
May 31, 2025 at 6:15 AM
#ChatGPT is better with the calendar, though.
April 10, 2025 at 1:32 PM
With all the talk about #AI taking our jobs - i think we are fine for now. #Google's #Gemini will arrive to work on a wrong day of the week 😅
April 10, 2025 at 1:30 PM
📣In our new paper we analyzed the impact of #Landsat and #Sentinel-2 🛰️ #satellite data density and SMA endmembers on trends in #grasslands ground cover:
- for monthly composites data density is irrelevant
- correct endmember definitions are critical‼️
Check out the full paper tinyurl.com/wha6pzax
April 4, 2025 at 1:05 PM
📣Our global 🌍 overview of usable Landsat and Sentinel-2 🛰️ data now comprises also information from 2024!
The complete 1982-2024 dataset can be browsed via a #GEE app: tinyurl.com/322e63p2 and downloaded from here:
doi.org/10.5061/drya...
March 14, 2025 at 2:19 PM
📣If you are passionate about #BigData in #EO 🛰️ and strive to 📈 improve scalability and efficiency of analysis workflows, 📉decreasing computational carbon footprint, and identify standards for federated workflow execution join us for the ESA #lps25, sessions D.04.04 and D.04.02
lps25.esa.int
November 21, 2024 at 3:22 PM
We all think we know how much #Landsat and #Sentinel-2 data is in the archives🛰️
🌍 Global edition
🚨 See our new paper and dataset to check 1982-2023 data availability for your study site:
tinyurl.com/yc82epfx
#GEE
data viewer: tinyurl.com/322e63p2
(reposted this time with working animation)
November 20, 2024 at 9:45 PM
We all think we know how much #Landsat and #Sentinel-2 data is in the archives🛰️
🌍 Global edition
🚨 See our new paper and dataset to check 1982-2023 data availability for your study site:
tinyurl.com/yc82epfx
#GEE data viewer: tinyurl.com/322e63p2
October 22, 2024 at 8:43 AM
not too bad, still in the first half 🙃
September 17, 2024 at 11:44 AM
We all think we know how much #Landsat and #Sentinel-2 data is in the archives In our new paper we show how challenging is to construct an uninterrupted #timeseries of n-day composites over Europe especially without extensive data interpolation: tinyurl.com/2kbwesbj
July 8, 2024 at 7:29 PM