Keiko Nomura, PhD
My personal website
Timeline
| Date | Annoucement | Keiko observation |
|---|---|---|
| 18 Apr 2022 | GEDI L4B Gridded Aboveground Biomass Density (Version 2) is available on Earth Engine! | 👏👏👏👏👏 (That was fast) |
| 05 Apr 2022 | GEDI L4B Gridded Aboveground Biomass Density (Version 2) is now available! | 👏👏👏👏👏 |
| 07 Mar 2022 | GEDI L2A Raster Canopy Top Height (Version 2) is available on Earth Engine | 👏👏👏👏👏 (Some issues with the shot numbers and delta time) |
| 19 Aug 2021 | GEDI L4A Footprint Level Aboveground Biomass Density (Version 1) is now available! | 👏👏👏👏👏 |
| 11 Aug 2021 | GEDI slack channel was created by @Kate_J_Fuller | 👏👏👏 |
| 16 Apr 2021 | Version 2 data released for Level 1B Geolocated Waveform Data, Level 2A Elevation and Height Metrics Data, and Level 2B Canopy Cover and Vertical Profile Metrics Data for April 18, 2019 through October 16, 2019 | Improved geolocation, reduced file size, etc. |
| 18 Mar 2021 | Level 3 dataset now available | 👏👏👏 |
| 20 Jan 2021 | 18 months of GEDI data now publicly available | 👏👏👏 |
| 26 Oct 2020 | One full year of GEDI data are now available | 👏👏👏 |
| 30 Sep 2020 | Two more months of GEDI data now available. A total of 10 months of data online | 👏👏👏 |
| 26 Aug 2020 | “GEDI L2A has measured redwoods > 90m. GEDI will produce a gridded L3 product at coarser resolution (1 km or finer) based solely on GEDI data” | |
| 14 May 2020 | A series of Jupyter Notebook Tutorials “Getting Started with GEDI L1B, L2A, and L2B Data in Python” released by the LP DAAC | 👏👏👏 |
| 12 May 2020 | GEDI introduction video released by NASA EarthData | |
| 16 Apr 2020 | NASA Earth Data: GEDI subsetter released | Hmm you still have to download the entire h5 first |
| 26 Feb 2020 | GEDI: One more month of data became available | 👏👏👏 |
| 20 Feb 2020 | NASA Earth Data: GEDI finder web service released | Extremely useful! Life saver |
| 25 Jan 2020 | Space Intelligence: GEDI viz released on twitter | 👏👏👏 |
| 21 Jan 2020 | GEDI: First GEDI data products became available via LPDAAC | Tree height overestimated? See the tweet below dated 27 Aug 2020 |
Other coding tools
Documentation
Global Ecosystem Dynamics Investigation (GEDI) Level 1B User Guide, version 2, April 2021
Global Ecosystem Dynamics Investigation (GEDI) Level 2 User Guide, version 2, April 2021
Global Ecosystem Dynamics Investigation (GEDI) Level 3 User Guide, version 1, March 2021
Other
GEDI tips
Google #EarthEngine tip 41: Test the #GEDI test. Due to so many requests, I can't ignore. But please remember, the dataset is not final... Anyway here is the very introduction of GEDI on EE (or my feedback to the amazing Google Earth Engine team, with many thanks!) pic.twitter.com/PKZRz2QGdV
— Keiko (@Keiko_geo) December 18, 2021
Google #EarthEngine tip 42 (continued from 41): Test the #GEDI test. For those who can't wait for the official release, this is GEDI intro part 2. #PowerBeams! The last #EarthEngine tip for the year 2021! Thank you everyone, wish you a happy New Year! pic.twitter.com/ZtcFgxY3OZ
— Keiko (@Keiko_geo) December 30, 2021
#GEDI tips: RH stands for 'relative height,' shown in m or cm, calculated at the percentage of cumulative waveform energy. So, RH100 means elev_highestreturn - elev_lowestmode
— Keiko (@Keiko_geo) August 25, 2020
#GEDI tips: "The lowest selected mode has triggered on noise, thus elev_lowestmode will be below the actual ground surface" (Level 02 User Guide), indicating that RH100 would overestimate the height https://t.co/cUGSpUfhWv
— Keiko (@Keiko_geo) August 27, 2020
#GEDI tips: GEDI produces 8 tracks of data. Half of them are by full power lasers. Use the data from these power beams if your area has dense forests. The power beam sensitivities are 2-3% higher than the coverage beam
— Keiko (@Keiko_geo) August 28, 2020
Power beams = '0101', '0110', '1000', '1011'
— Keiko (@Keiko_geo) August 28, 2020
GEDI visualisation updated using Unfolded Studio @unfoldedinc https://t.co/UkOxYWUQie Now you don't even have to code to create this map, and satellite imagery basemap is available https://t.co/Ympn8e92qJ Be patient while loading... https://t.co/P7GN8TPxVp pic.twitter.com/8R2mQqq0oa
— Keiko (@Keiko_geo) January 17, 2021