Niger 1

EROS Cal/Val Center of Excellence (ECCOE)
Test Sites Catalog
Niger 1
Landsat 8 LandsatLook Image Path 189 Row 46 Acquired 17 Aug 2020 with ROI indicated Google Earth Image centered on Niger 1 ROI

Description

The Niger 1 site is one of the most stable Pseudo-Invariant Calibration Site (PICS), located in Niger, Africa. The site has very good spatial homogeneity for a large area. It fulfills most of the intrinsic properties for being considered as a PICS. Temporal stability and spatial homogeneity fall below 2 percent for different spectral regions when analyzing  top of atmosphere reflectance products.

Usability

Niger 1 has been of great importance to the radiometric calibration community, and the site has been used for long-term stability monitoring of different Landsat sensors [1]. Cross-calibration between Landsat sensors and other satellite sensors has also been performed over this site [2, 3]. 

Closest AERONET station: Tamanrasset_INM [ 22.79, 5.53] 

Location (City, State, Country):
Niger, Africa
Landsat WRS - 2 Path / Row:
189/46
Center Latitude (degrees):
N 20.41
Center Longitude (degrees):
E 9.36
SDSU Region of Interest

N 20.53, E 9.19
N 20.53, E 9.52
N 20.28, E 9.52
N 20.28, E 9.19

Search this area in EarthExplorer (Landsat 8-9 Collection 2 Level-1) - date range, datasets, cloud cover and other criteria can be modified once initial results are returned

KML (Need help with this file?)

UTM Zone:
32 N
Altitude above sea level (meters):
582
Purpose:
Radiometry
Status:
Active

References:
  1. Micijevic, Esad, Nischal Mishra, and Dennis Helder. "Assessing Long Term Stability of Landsat 5 TM, Landsat 7 ETM+ and Landsat 8 OLI." (2017). 
  2. Amit Angal, Nischal Mishra, Xiaoxiong Xiong, and Dennis Helder "Cross-calibration of Landsat 5 TM and Landsat 8 OLI with Aqua MODIS using PICS", Proc. SPIE 9218, Earth Observing Systems XIX, 92180K (26 September 2014). 
  3. Cibele Teixeira Pinto, Mahesh Shrestha, Nahid Hasan , Larry Leigh, and Dennis Helder "SBAF for cross-calibration of Landsat-8 OLI and Sentinel-2 MSI over North African PICS", Proc. SPIE 10764, Earth Observing Systems XXIII, 107640Y (7 September 2018).

Note: This information has been compiled by the USGS ECCOE Team, using the best sources currently known. Updates will be made as more information becomes available. Please contact eccoe@usgs.gov with any updates you would like to contribute.