Algorithm Theoretic Basis Documents

Up-to-date information is posted on the LP DAAC product pages. Please click the link for documentation, including algorithm theoretical basis documents (ATBD), product specification documents (PSD), and user guides. Also pay attention to “Known issues” listed near the bottom of the page.

 Some products are available in multiple formats. For instance, L2_LSTE is land surface temperature and emissivity in swath format, distributed as HDF5 (to be used with L1B_GEO); L2G_LSTE is land surface temperature and emissivity that has been projected onto a 70 m grid, distributed as HDF5; and L2T_LSTE is land surface temperature and emissivity that has been gridded and tiled into smaller chunks (~100 km x 100 km following the Sentinel tiling boundaries) and distributed as GeoTIFF.

Summary Table

Level

Name

Version

Description

Link

L1B

RAD

2

Radiance

L1b Radiance v002

L1cg Radiance v002

L1ct Radiance v002

L1B

GEO

2

Geolocation

L1b Geolocation v002

L2

LST&E

2

Land Surface Temperature and Emissivity

L2 LSTE v002

L2g LSTE v002/

L2t LSTE v002

L2

CLOUD

2

Cloud Mask

L2 Cloud v002

L2g Cloud v002

L2

STARS

2

Normalized Difference Vegetation Index (NDVI) and Albedo produced from a data fusion algorithm using VIIRS and Harmonized Landsat Sentinel (HLS). These are used as an input into L3_ET and are made available to enable open science.

L2t STARS v002

L3

MET

2

Meteorological data from GEOS-5 reanalysis (near-surface air temperature and relative humidity) resampled to ECOSTRESS resolution. These are used as an input into L3_ET and are made available to enable open science.

L3g MET v002

L3t MET v002

L3

SM

2

Soil moisture from GEOS-5 reanalysis resampled to ECOSTRESS resolution. This is used as an input into L3_ET and is made available to enable open science.

L3g SM v002

L3t SM v002

L3

SEB

2

Surface energy balance variables that are computed within the JET algorithm. Incoming surface radiation and net radiation are used as an input into evapotranspiration models and are made available to enable open science.

L3g SEB v002

L3t SEB v002

L3

JET

2

JPL Evapotranspiration ensemble using algorithms: PT-JPL-SM, STIC, BESS, and MOD16

L3g JET v002

L3t JET v002

L3

ET_ALEXI

2

Evapotranspiration using the DisALEXI algorithm. Produced over CONUS only.

L4

WUE

2

Water Use Efficiency (GPP / ET)

L4g WUE v002

L4t WUE v002

L4

ESI_ALEXI

2

Evaporative Stress Index (ET / reference ET) using the DisALEXI algorithm

L4

ESI

2

Evaporative Stress Index (ET / reference ET) using the PT-JPL-SM algorithm

L4g ESI v002

L4t ESI v002