Monojit Saha

Laser Altimetry Applications for a Changing World: Working with ICESat-2 Sea Ice Data | NASA Earthdata Join us on Wednesday, Aug. 6, 2025, at 2 p.m. EDT (-04:00 UTC) to learn how to discover, access, and work with Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) sea ice data products.

Webinar Alert!
I’m super excited to be one of the presenters for the upcoming NASA Earthdata webinar on remote sensing of sea ice using ICESat-2! 🛰️❄️
🗓️ When: August 6, 2 PM EDT
🔗 Register here:

Thrilled to share that I’ve been awarded the Jingli Yang Summer Fellowship at the University of Maryland, College Park!

This fellowship will support my summer research project titled “Improving Near-Shore Lead Detection from ICESat-2 and Sentinel-1 using Deep Learning”❄️🛰️

Thank you for pushing me consistently, to think, to learn and execute. Everything that I know today is because of you My Guardian Angel, My BOSSS! Thank you for the incredible mentorship. You are the best!!!!
@lifeofpili.bsky.social

Happy 2,000,000,000,000th, ICESat-2! NASA’s Earth-observing laser in orbit passed a milestone on March 9 at 12:51 p.m. EDT — 16:51:00.268 UTC, to be precise — as its laser instrument fired for the 2 trillionth time and measured clouds off the coast of East Antarctica.

blogs.nasa.gov/icesat2/2025...

9/ You can learn more about the #Cryo2Ice Campaign which realigned #ESA 's #Cryosat2 to have better coincidence to #NASA's #ICESat2 which made this study possible: t.co/F4jKH64ooa

8/ This is my first published paper out of my Masters at @ceos_um! Thanks to my mentors and colleagues there for all their support!

7/ Big thanks to my co-authors, field team, and mentors for the support! @JulienneStroeve @melting_sea_ice @jclandy @Vishnu_seaice @dustinisleifson @hoiminglam

6/ 🤔 Why does this matter? Snow depth on sea ice is correlated with sea ice thickness. Accurate monitoring helps Arctic communities and climate science.

5/ 🌍 Our method demonstrates that it’s possible to retrieve snow depth in leadless regions, providing critical insights for Arctic monitoring.

4/ 🌊 We validated our results using in situ measurements near Cambridge Bay, Nunavut. On average, Cryo2Ice snow depths underestimated in situ values by 2 to 4 cm, but the snow depth distributions match well between Cryo2ice and in-situ.

3/ 🔍 Our study is the first to assess snow depth retrieval using #Cryo2Ice data in a leadless region. Without leads to estimate sea surface height, we developed a method using ellipsoidal height differences between the satellites and accounting for tides.

2/ ❄️ Snow depth on Arctic sea ice is crucial for understanding ice thickness, ecosystem processes, and supporting human activities. But in leadless regions like the Canadian Arctic, measuring snow depth is particularly challenging.

Snow depth estimation on leadless landfast ice using Cryo2Ice satellite observations Abstract. Observations of snow on Arctic Sea ice are vitally important for sea ice thickness estimation, bio-physical processes, and human activities. While previous studies have combined CryoSat-2- a...

1/ 📢 Excited to share our new research published in #TheCryosphere on snow depth estimation in the Canadian Arctic Archipelago using #Cryo2Ice satellite data! 🛰️ Here's a thread on what we found and why it matters. 🧵👇

tc.copernicus.org/articles/19/...