GLAD Training Workshop Notes

Agenda notes

April 22

  • Presentations from UMD (GLAD system overview), Sophyra (NFM 2018) and Carlos (MRV workflow). UMD presentation slides shared in the workshop GD folder.

  • Discussions on workshop agenda and objectives

  • Data transfer and software installation to the GDANCP computers

  • Discussion with Carlos and REDD+ team about using GLAD time-series data to support sample-based analysis

Sample interface DEMO link:

https://glad.umd.edu/Potapov/SERVIR_Mekong/Random_samples_2018/main_index.html

April 23

  • Landsat ARD structure and processing (see /Documentation/)

  • 16-day data download

  • Metrics approach and metrics calculation codes

  • Testing image classification tool

April 24

  • Image classification iteration (forest mask and rubber plantation layer)

  • Improving sample analysis tool for REDD+

  • Presentation on image classification tool (slides in the /Documentation/ folder)

April 25

  • Presentation of SERVIR/GLAD annual time-series products for Cambodia, comparison with GDANCP data for 2018 and discussions

  • Presentation of the Alert 1.0 and 2.0 outputs

April 26

  • GDANCP/GLAD/SERVIR products discussion (cont.)

  • Aggregation of vegetation structure and change metrics for the polygons of GDANCP forest map 2018

  • Discussion on annual map update approaches

April 29

  • Download code update (waiting for username and password)

  • Extraction of national data for each polygon

  • Extraction of classification results for each polygon

  • Using C++

April 30

  • Two parallel tests on rubber mapping

  • Annual change detection setup and testing

May 1

  • Meeting between Ellie, Sophyra, Quyen, and Carlos on training/documentation materials

May 2

  • Workshop wrap-up

May 3

  • Presentation for USAID training workshop

 

Workflow notes

16-day ARD data

  • Landsat processing - see Forest_monitoring_in_Lower_Mekong_for_RSE.pdf for reference

Tile system - "D:\GLAD_2019\Data\cambodia_tiles.shp"

  • 16-day composite ID, bands, and quality flags - "D:\GLAD_2019\Shared_Cambodia_training_2019\Documentation\16d_intervals.xlsx"

Data download Updated

          See new code in D:\GLAD_2019\New_download_code

  1. Make a separate folder (or check the 16-day data folder location on the local computer)
  2. Make a list of tiles (see example for all Cambodia tiles - "D:\GLAD_2019\Data\Cambodia_tiles.txt")
  3. Use code 01_download_V1.1.pl
  4. Usage: >perl 01_download.pl <username> <password> <tile list file> <start interval> <end interval> <output folder>
  5. Example: >perl 01_download_V1.1.pl myname mypass tiles.txt 783 874 D:/xx_SERVIR_local_processing/tiles_16d
  6. TEST: 2 tiles, 2 intervals each (4 intervals total) start 8:42, end 8:46 (4 minutes). Total time for 1 year of data download (30 tiles): 12 hours. 1 year of data ~ 120 GB
  7. All DEM metrics are in D:\GLAD_2019\Data\DEM (no need to download again)