Forum

See below for a Table of Contents with links to individual LP DAAC FAQ sections

ASTER
MODIS
ECOSTRESS
EMIT
GEDI
NASADEM
HLS
G-LiHT
Data Access
Data Citation and Reuse

How do I cite my data? Each DOI Landing Page provides a citation generator that will automatically create a citation for you based on the data product you are using. The DOI Landing Pages can be found under the search data catalog . Am I allowed to reuse LP DAAC data? All data distributed by the LP...

How can I bulk download data distributed by the LP DAAC? Bulk download options are available from DAAC2Disk as a script that can be downloaded and executed from the command line. Also, data are available from the LP DAAC Data Pool via HTTPS. Please ensure you have authorized your download method fo...

Why did NASA scientists develop G-LiHT? Merging of time-series and multi-sensor image data is a fusion process that allows scientists to study interactions between ecosystem composition, structure, and function. Equipped with this knowledge, we can better predict ecosystem responses due to land use...

What is the difference between the L30 and the S30 product? Harmonized Landsat Sentinel-2 ( HLS ) uses a processing chain involving several separate radiometric and geometric adjustments, with a goal of eliminating differences in retrieved surface reflectance arising solely from differences in inst...

How is NASADEM different from SRTM? Although NASADEM is derived from Shuttle Radar Topography Mission (SRTM) raw data, one of the primary differences is the use of the latest unwrapping technique and the reliance of auxiliary data to process the raw data, which were not available during the origina...

Why do GEDI elevation values over my region of interest not match elevation values from another digital elevation model (DEM)? A known ranging issue affects the absolute elevations of two of the eight beams (Beam0000 and Beam0001). Users are encouraged to read Section 3.7 of the ATBD for GEDI Wavef...

What is imaging spectroscopy? Imaging spectroscopy is a method of collecting imagery that acquires many bands of data over a large visible-shortwave infrared (VSWIR) spectral range with finer spectral resolution than traditional multispectral imaging. The EMIT instrument collects observations at 60...

Why are there no ECOSTRESS observations over my specific study site? ECOSTRESS priority data coverage includes the lower (48) continental United States (CONUS), twelve 1,000 x 1,000 km key climate zones, and twelve Fluxnet sites. Red polygons represent high priority targets for acquisition. Note in...

Why do I get some unexpectedly large or hard to interpret data values when I am working with MODIS data? Most MODIS Science Data Set (SDS) layers are in 8-bit or 16-bit format. This requires a scaling factor to be applied. For information on the scale factor of a specific band for a specific produc...