Posted by Jim Lay, Last modified by Jim Lay on 05 June 2018 09:11 AM
Daymet User-Community Contributed Tools
Please note that these community contributed tools have had limited testing by the ORNL Daymet group and are provided for your convenience.
MATLAB functions to download and merge Daymet tiles
Developed and contributed by Chao Li, PhD at Carnegie Institution of Science at Stanford University.
This toolkit consists of two MATLAB functions: 'daymetGet' and 'daymetMerge'. The 'daymetGet' function allows a user to download data for separate Daymet variables for different tiles and years. The downloaded data are automatically saved in MATLAB's current working directory. The output naming convention is: parname_tileid_year.nc. Different tiles can be merged together in terms of the 'daymetMerge' function. A coordinate file is provided, daymetCoordinate.mat, that is needed with the daymetMerge.m function. For greater details about how to use the functions, a 'demo' script is provided.
Download a zip file containing the two MATLAB functions, a MATLAB demo, and a coordinate file: MATLAB_Daymet.zip (143MB).
DaymetR, A Daymet Single Pixel and Gridded Data Download Tool for R
Developed and contributed by Koen Hufkens, PhD at the Richardson Lab at Harvard University.
Koen writes, "As I'm extensively using daily meteorological data to drive my grassland model, quick and easy access to this data is key. However accessing single pixel values through the java tool provided was a bit cumbersome and did not fit my workflow. As such I wrote my own tool which queries the website and allows you to subset time series of a single pixel location (given a latitude, longitude position) all within R. Data is either just downloaded to the current working directory or imported as a structured array into your R workspace for further analysis or formatting. In addition, similar functionality is provided to download gridded Daymet data based upon a single set of coordinates or a bounding box of two coordinates."
Koen's website and a link to his bitbucket site is at DaymetR
ArcMap Tool - Get_Daymet_Tiles
Developed and contributed by Mark R Nardi and others of the USGS, MD-DE-DC Water Science Center, DE Office.
Download the ArcMap Get Daymet Tiles scripts.
ArcGIS 10.0 and Python Scripts to Download, Convert, and Mosaic Daymet Tiles
Developed and contributed by Stefanie Bohms of SGT, Inc. a Contractor to the USGS, EROS Center.
Download the ArcGIS and Python Daymet scripts.
Joining Daymet Tiles with NCL
The website Joining Daymet Tiles with NCL is maintained by Dave Allured of the NOAA/PSD/CIRES Climate Analysis Branch. Dave is developing scientific software to spatially join or mosaic Daymet netCDF files using the NCAR Command Language (NCL).
NCAR's NCL Page and Daymet Tiles
The National Center for Atmospheric Research (NCAR) maintaines a website, NCL Application Examples: Daymet , demonstrating the use of the NCAR Command Language (NCL) with Daymet data.
ORNL Daymet Tools
Multiple Coordinates Extractor
Download a script for automated data extraction at multiple locations for the Single Pixel Extraction.
See the README.txt file for instructions for multiple location extraction.
Converting netCDF to GeoTiff using GDAL
Download a document describing how to convert and merge Daymet netCDF files using the Geospatial Data Abstraction Library (GDAL).
Automate Downloading of netCDF Files from THREDDS Server
Download a document describing how to automate the download of Daymet netCDF files from the THREDDS Daymet Tile server for a known range of years and Tile ID.
Download a document describing how to automate the download of Daymet Mosaic netCDF version 4 files from the THREDDS Daymet Mosaic server for a known range of years.
Daymet netCDF Files in ArcGIS
The User's Guide for the Daymet Tile Selection Data includes a brief description of using netCDF files in ArcGIS.
Daymet Graphical Visualization