How green the land is (Terra, monthly, 5 km)
What it measures. How green and leafy the land is, summarized once a month for every spot on Earth. It provides two greenness scores (NDVI and EVI), the second being better at telling apart very dense vegetation.
How it's made. Derived from the MODIS instrument on the Terra satellite by averaging the best daily views over each month and stitching them into a cloud-free global map at about 5 km resolution.
How & where you'd use it. Handy for tracking growing seasons, crop and forest health, drought stress, and long-term changes in vegetation around the world.
What's measured
Coverage & cadence
- Time span2000-02-01 → ongoing
- Measured byTerra (MODIS)
- Processing levelLevel 3
- Spatial extent-180, -90, 180, 90
- FormatsHDF-EOS2
- StatusACTIVE
What you can do with it
- Map vegetation, forests and biomass
- Monitor ecosystem productivity and carbon
- Support habitat and biodiversity studies
Official description
The Terra Moderate Resolution Imaging Spectroradiometer (MODIS) Vegetation Indices Monthly (MOD13C2) Version 6.1 product provides a Vegetation Index (VI) value at a per pixel basis. There are two primary vegetation layers. The first is the Normalized Difference Vegetation Index (NDVI) which is referred to as the continuity index to the existing National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer (NOAA-AVHRR) derived NDVI. The second vegetation layer is the Enhanced Vegetation Index (EVI), which has improved sensitivity over high biomass regions. The Climate Modeling Grid (CMG) consists of 3,600 rows and 7,200 columns of 5,600 meter (m) pixels. In generating this monthly product, the algorithm ingests all the [MOD13A2](https://doi.org/10.5067/MODIS/MOD13A2.061) products that overlap the month and employs a weighted temporal average. Global MOD13C2 data are cloud-free spatial composites and are provided as a Level 3 product projected on a 0.05 degree (5,600 m) geographic CMG. The MOD13C2 has data fields for the NDVI, EVI, VI QA, reflectance data, angular information, and spatial statistics such as mean, standard deviation, and number of used input pixels at the 0.05 degree CMG resolution. Known Issues * For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue?sensor=MODIS&sat=Terra&as=61).
Get the data
import earthaccess
earthaccess.login(strategy="netrc") # free Earthdata Login
results = earthaccess.search_data(
short_name="MOD13C2",
version="061",
bounding_box=(-122.5, 37.2, -121.8, 37.9), # your area (W,S,E,N)
temporal=("2024-01-01", "2024-12-31"), # your dates
)
files = earthaccess.open(results) # stream straight from LPCLOUD Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package. Official links
- Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data. GET DATA
- The technical information in the User's Guide enables users to interpret and use the data products. VIEW RELATED INFORMATION
- The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products. VIEW RELATED INFORMATION
- The File Specification provides a description of the product file including Scientific Data Sets and their attributes. VIEW RELATED INFORMATION
- Validation at stage 3 has been achieved for the MODIS Vegetation Index product suite. VIEW RELATED INFORMATION
- Further details regarding MODIS land product validation for the MOD13 data products are available from the MODIS Land Team Validation site. VIEW RELATED INFORMATION
- The LDOPE Land Product Quality Assessment website provides known issues, maneuvers, and product quality of the land products. VIEW RELATED INFORMATION