Search found 16 matches

by ORNL - mthornton
Tue May 10, 2022 12:46 pm America/New_York
Forum: Questions/Comments
Question: Solar radiation
Replies: 4

Re: Solar radiation

This site may provide the data you need: https://maps.nrel.gov/nsrdb-viewer/
by ORNL - mthornton
Tue May 10, 2022 9:18 am America/New_York
Forum: Questions/Comments
Question: Solar radiation
Replies: 4

Re: Solar radiation

If your coordinate is in North America, the Daymet dataset https://daymet.ornl.gov/ provides gridded estimates of shortwave radiation; defined as: Incident shortwave radiation flux density in watts per square meter, taken as an average over the daylight period of the day for the time period 1980 - p...
by ORNL - mthornton
Tue May 03, 2022 3:28 pm America/New_York
Forum: Questions/Comments
Question: GEDI L4A AGBD Data: Cloud-Based Data Access Tutorial
Replies: 0

GEDI L4A AGBD Data: Cloud-Based Data Access Tutorial

The ORNL DAAC recently added a new learning resource to its suite of GEDI tutorials; Accessing GEDI L4A Dataset with NASA OPeNDAP in the Cloud . GEDI_image_Forum.png This Notebook demonstrates how to directly access and subset the Global Ecosystem Dynamics Investigation (GEDI) L4A Footprint Level Ab...
by ORNL - mthornton
Mon Apr 11, 2022 3:41 pm America/New_York
Forum: Questions/Comments
Question: Daymet V4 2021 Data Recently Released
Replies: 0

Daymet V4 2021 Data Recently Released

All Daymet Version 4 https://daymet.ornl.gov/ collections have been been updated to include calendar year 2021. Daymet provides continuous gridded estimates of daily weather by interpolating and extrapolating ground-based observations through statistical modeling techniques. Daymet surface weather v...
by ORNL - mthornton
Mon Mar 07, 2022 2:14 pm America/New_York
Forum: Questions/Comments
Question: Fixed uncertainty for GEDI AGBD
Replies: 5

Re: Fixed uncertainty for GEDI AGBD

@gcaria, @ORNL - shresthar is working with the GEDI Science Team to investigate your question. A response is forthcoming.
by ORNL - mthornton
Fri Mar 04, 2022 9:33 am America/New_York
Forum: Questions/Comments
Question: Fixed uncertainty for GEDI AGBD
Replies: 5

Re: Fixed uncertainty for GEDI AGBD

@gcaria We have our GEDI subject matter expert working on your question. They will respond soon.
by ORNL - mthornton
Thu Mar 03, 2022 9:14 am America/New_York
Forum: Questions/Comments
Question: GEDI Science Team Confirms Issue in GEDI L4A, Version 2 Data
Replies: 1

GEDI Science Team Confirms Issue in GEDI L4A, Version 2 Data

The GEDI Science Team has confirmed that GEDI L4A, Version 2 files are affected by an issue that results in incorrect estimates of the aboveground biomass density (AGBD) estimates generated using algorithm setting group 10. AGBD estimates based on other algorithm setting groups are not affected. An ...
by ORNL - mthornton
Thu Feb 24, 2022 9:39 am America/New_York
Forum: Questions/Comments
Question: GCMD SIF Keyword Definition
Replies: 4

Re: GCMD SIF Keyword Definition

Hello GCMD - tstevens , Here is an improved SIF definition for your review. Solar-Induced Chlorophyll Fluorescence (SIF) is an emission of light in the 650–850 nm spectral range from the excited state of the chlorophyll-a pigment after absorption of photosynthetically active radiation (PAR). As this...
by ORNL - mthornton
Fri Feb 18, 2022 10:17 am America/New_York
Forum: Questions/Comments
Question: GEDI Data Products Move to Version 2
Replies: 0

GEDI Data Products Move to Version 2

GEDI_16_10-500x281.jpg NASA's ORNL DAAC and LP DAAC discontinued distribution of most GEDI version 1 data on February 15th, 2022. Version 2 GEDI data are now available. Version 1 Data Availability Includes: Selected mission weeks, call the Golden Weeks , of Footprint Level Above Ground Biomass L4A ...
by ORNL - mthornton
Sun Feb 06, 2022 10:11 pm America/New_York
Forum: Questions/Comments
Question: NASA Airborne and Field Data Workshop
Replies: 0

NASA Airborne and Field Data Workshop

NASA Airborne and Field Data Workshop An opportunity for stakeholders to provide input on ways to improve the usability of NASA airborne and field data. airbornField.jpg Details When: Mar 29, 2022 at 11:00 AM EDT - Mar 30, 2022 at 5:00 PM EDT Location: Online Organized by: NASA Earth Science Data S...