Datasets I have developed/co-developed and continue to maintain. In cases of multiple versions, only the latest three versions are shown.
ICESat-2 L4 monthly gridded winter Arctic sea ice thickness (IS2SITMOGR4)
Petty, A. A., N. Kurtz, R. Kwok, T. Markus, T. A. Neumann, N. Keeney and A. Cabaj. 2025. ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 4. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: 10.5067/TXDHDJ1JT0CG.
Also available as a Zarr file: s3://icesat-2-sea-ice-us-west-2/IS2SITMOGR4_V4/zarr/IS2SITMOGR4_V4_201811-202504.zarr
Petty, A. A., N. Kurtz, R. Kwok, T. Markus, T. A. Neumann and N. Keeney. 2023. ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 3. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: 10.5067/ZCSU8Y5U1BQW.
Petty, A. A., N. Kurtz, R. Kwok, T. Markus, T. A. Neumann and N. Keeney. 2022. ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 2. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: 10.5067/OE8BDP5KU30Q.
These data are also described and analyzed in an online Jupyter Book , that includes examples of netcdf vs cloud-optimized (zarr) data access approaches. The Version 4 data are also featured in this snazzy NASA Scientific Visualization Studio page.
ICESat-2 L4 monthly gridded summer Arctic sea ice thickness (IS2SITMOGR4S )
Petty, A. (2025). Monthly gridded summer Arctic sea ice thickness from ICESat-2, v1 [Data set], Zenodo, doi: 10.5281/zenodo.
Also available as a Zarr file: s3://icesat-2-sea-ice-us-west-2/is2sit_summer/zarr/IS2SIT_SUMMER_01_201905-202108.zarr
ICESat-2 L4 along-track Arctic sea ice thickness (IS2SITDAT4)
Petty, A. A., N. T. Kurtz, R. Kwok, T. Markus, and T. A. Neumann. 2022. ICESat-2 L4 Along-Track Sea Ice Thickness, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: 10.5067/JTI5YG3S6VAJ.
NB: A preliminary Version 2 dataset is currently hosted on AWS: http://is2sitdat4.s3-website-us-west-2.amazonaws.com
ICESat L4 Seasonal Gridded Sea Ice Thickness, Version 1 (ISSITGR4)
Petty, A. A., N. Kurtz, 2023. ICESat L4 Seasonal Gridded Sea Ice Thickness, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi:10.5067/1S5M59IQ0OK3.
ATLAS/ICESat-2 L3A ATL07 Sea Ice Height (ATL07)
Kwok, R., Petty, A. A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N. & the ICESat-2 Science Team. (2025). ATLAS/ICESat-2 L3A Sea Ice Height. (ATL07, Version 7). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL07.007.
Kwok, R., Petty, A. A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N. & the ICESat-2 Science Team. (2024). ATLAS/ICESat-2 L3A Sea Ice Height. (ATL07, Version 6). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL07.006.
Kwok, R., Petty, A. A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N. & the ICESat-2 Science Team. (2023). ATLAS/ICESat-2 L3A Sea Ice Height. (ATL07, Version 5). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL07.005.
ATLAS/ICESat-2 L3A ATL07 Sea Ice Freeboard (ATL10)
Kwok, R., Petty, A. A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N. & the ICESat-2 Science Team. (2025). ATLAS/ICESat-2 L3A Sea Ice Freeboard. (ATL10, Version 7). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL10.007.
Kwok, R., Petty, A. A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N. & the ICESat-2 Science Team. (2024). ATLAS/ICESat-2 L3A Sea Ice Freeboard. (ATL10, Version 6). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL10.006.
Kwok, R., Petty, A. A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N. & the ICESat-2 Science Team. (2025). ATLAS/ICESat-2 L3A Sea Ice Freeboard. (ATL10, Version 5). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL10.005.
ATLAS/ICESat-2 L3B ATL20 Daily and Monthly Gridded Sea Ice Freeboard (ATL20)
Petty, A. A., R. Kwok, M. Bagnardi, A. Ivanoff, N. Kurtz, J. Lee, J. Wimert, and D. Hancock (2025) ATLAS/ICESat-2 L3B Daily and Monthly Gridded Sea Ice Freeboard, Version 5. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center.doi:10.5067/ATLAS/ATL20.005.
Petty, A. A., R. Kwok, M. Bagnardi, A. Ivanoff, N. Kurtz, J. Lee, J. Wimert, and D. Hancock (2023) ATLAS/ICESat-2 L3B Daily and Monthly Gridded Sea Ice Freeboard, Version 4. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi:10.5067/ATLAS/ATL20.004.
Petty, A. A., R. Kwok, M. Bagnardi, A. Ivanoff, N. Kurtz, J. Lee, J. Wimert, and D. Hancock (2021) ATLAS/ICESat-2 L3B Daily and Monthly Gridded Sea Ice Freeboard, Version 3. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi:10.5067/ATLAS/ATL20.003.
ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly (ATL21)
Petty, A. A., R. Kwok, M. Bagnardi, N. Kurtz, J. Wimert, J. Lee, and D. Hancock. 2025. ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly, Version 4. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL21.004.
Petty, A. A., R. Kwok, M. Bagnardi, N. Kurtz, J. Wimert, J. Lee, and D. Hancock. 2024. ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly, Version 3. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL21.003.
Petty, A. A., R. Kwok, M. Bagnardi, N. Kurtz, J. Wimert, J. Lee, and D. Hancock. 2022. ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly, Version 2. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL21.002.
ATLAS/ICESat-2 L3A Sea Ice Height Quick Look (ATL07QL)
Kwok, R., A. A. Petty, G. Cunningham, T. Markus, D. Hancock, A. Ivanoff, J. Wimert, M. Bagnardi, N. Kurtz, and the ICESat-2 Science Team. (2025). ATLAS/ICESat-2 L3A Sea Ice Height Quick Look, Version 7 [Indicate subset used]. Boulder, Colorado USA. National Snow and Ice Data Center, doi:10.5067/ATLAS/ATL07ql.007.
Kwok, R., A. A. Petty, G. Cunningham, T. Markus, D. Hancock, A. Ivanoff, J. Wimert, M. Bagnardi, N. Kurtz, and the ICESat-2 Science Team. (2024). ATLAS/ICESat-2 L3A Sea Ice Height Quick Look, Version 6 [Indicate subset used]. Boulder, Colorado USA. National Snow and Ice Data Center, doi:10.5067/ATLAS/ATL07ql.006.
Kwok, R., A. A. Petty, G. Cunningham, T. Markus, D. Hancock, A. Ivanoff, J. Wimert, M. Bagnardi, N. Kurtz, and the ICESat-2 Science Team. (2023). ATLAS/ICESat-2 L3A Sea Ice Height Quick Look, Version 5 [Indicate subset used]. Boulder, Colorado USA. National Snow and Ice Data Center, doi:10.5067/ATLAS/ATL07ql.005.
ATLAS/ICESat-2 L3A Sea Ice Freeboard Quick Look (ATL10QL)
Kwok, R., A. A. Petty, G. Cunningham, T. Markus, D. Hancock, A. Ivanoff, J. Wimert, M. Bagnardi, N. Kurtz, and the ICESat-2 Science Team. (2025). ATLAS/ICESat-2 L3A Sea Ice Freeboard Quick Look, Version 7 [Indicate subset used]. Boulder, Colorado USA. National Snow and Ice Data Center, doi:10.5067/ATLAS/ATL10ql.007.
Kwok, R., A. A. Petty, G. Cunningham, T. Markus, D. Hancock, A. Ivanoff, J. Wimert, M. Bagnardi, N. Kurtz, and the ICESat-2 Science Team. (2024). ATLAS/ICESat-2 L3A Sea Ice Freeboard Quick Look, Version 6 [Indicate subset used]. Boulder, Colorado USA. National Snow and Ice Data Center, doi:10.5067/ATLAS/ATL10ql.006.
Kwok, R., A. A. Petty, G. Cunningham, T. Markus, D. Hancock, A. Ivanoff, J. Wimert, M. Bagnardi, N. Kurtz, and the ICESat-2 Science Team. (2023). ATLAS/ICESat-2 L3A Sea Ice Freeboard Quick Look, Version 5 [Indicate subset used]. Boulder, Colorado USA. National Snow and Ice Data Center, doi:10.5067/ATLAS/ATL10ql.005.
NASA Eulerian Snow On Sea Ice Model (NESOSIM) version 1.1, 1980-2025, (NESOSIM v1.1)
Petty, A. (2026). NASA Eulerian Snow On Sea Ice Model Version 1.1 (NESOSIMv1.1) data: 1980 - 2025 [Data set], Zenodo, doi: 10.5281/zenodo.5164313.
Petty, A. (2019). NASA Eulerian Snow On Sea Ice Model Version 1.0 (NESOSIMv1.0) data: 2000 - 2015 [Data set], url: https://earth.gsfc.nasa.gov/cryo/data/nasa-eulerian-snow-sea-ice-model-nesosi