Data · collection
NOAA/NASA Pathfinder NDVI
Listed in NASA Earthdata CMR
Description
Two land surface data sets from the NOAA/NASA AVHRR (Advanced Very High Resolution Radiometer) Pathfinder Project on the NOAA/TIROS operational meteorological satellites are available on EOS-WEBSTER (eos-earthdata.sr.unh.edu/). Both data sets are derived from the Pathfinder Composite Data Set which in turn is derived from the Pathfinder Daily Data Set. The Pathfinder Composite Data Set is generated by comparing the NDVI (Normalized Difference Vegetation Index) values for each 8 km bin from 10 consecutive Daily Data Sets.
The pixel with the highest NDVI for the 10 days is chosen as the date for inclusion in the composite. This compositing process is effective for removing most of the clouds and atmospheric contaminants, thus providing as close to a cloud free field in each of the data layers as is possible [Holben (1986)International Journal of Remote Sensing, 7:1417-1434]. There are three composites per month for each year of data.
Read the rest (2 more)
The first composite of each month is for days 1 to 10, the second composite is for days 11 to 20, and the third composite is for the remaining days. The Amazon 0.1 degree data set on EOS-WEBSTER is a monthly maximum recomposite value of NDVI data from the Pathfinder Composite Data Set reprojected to 0.1 degree for the Amazon region. The temporal scale is from August 1981 through July 1994.
The Global 0.5 degree data set on EOS-WEBSTER is a monthly maximum recomposite value of NDVI data from the Pathfinder Composite Data Set reprojected to 0.5 degree for terrestrial and climate modeling applications. The data span from August 1981 through July 1994. For a full discussion of the NOAA/NASA Pathfinder AVHRR Land Data Sets please consult the Goddard DAAC Pathfinder Data Guide or the AVHRR User's Guide (available in PDF format).
Links
Get the data
- eos-earthdata.sr.unh.edu ↗
EOS-WEBSTER Earth Science Information Partner (ESIP) provides terrestrial ecosystem research data via a web-based search, subset and order system.
download · from NASA CMR
- Access the NOAA/NASA Pathfinder NDVI dataset. eos-earthdata.sr.unh.edu/data ↗
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214608545-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214608545-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Advanced Very High Resolution Radiometer · NOAA Polar Orbiting Environmental Satellites · Not provided · Reflectance · Television Infrared Observation Satellite-N
- Inferred from text
- Satellite remote sensing 65%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214608545-SCIOPS | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:avhrr | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/land-surface/surface-radiative-properties/reflectance | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:remote-sensing | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[platform].gcmd_platform:noaa-poes | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:tiros-n | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |