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Table 2 Data used in the study, along with its description, source, and purpose

From: Maize yield forecast using GIS and remote sensing in Kaffa Zone, South West Ethiopia

Types of data

Description

Source

Purpose

DEM

Aster 30 m resolution

United States Geological Survey(USGS)

For maize elevation generates

Pan sharpened SPOT 6 image

Spatial resolution of 1.5 m,Panchromatic and 6 m Multispectral,

12 bit Radiometric resolution,

1 days Temporal resolution &Path/raw—170/55

Ethiopian Geospatial Information Agency (EGIA)

In order to perform supervised LULC classification,

CHERIPS rainfall

Spatial resolution:(0.050*0.050), Frequency: dekadal,

Archive:2008–2017&

Format:netCDF

Downloading from https://data.chc.ucsb.edu/products/CHIRPS-2.0/africa_dekad/tifs/

Used to calculate yearly average rainfall to correlate it with maize yield

potential evaporation(pet)

1 km*1 km Spatial resolution, Frequency: dekadal, Archive: 2008–2017& Format:netCDF

National Meteorology Agency of Ethiopia(NMA)

Used to calculate WRSI to correlate it with maize yield

eMODIS NDVI

250 m*250 m special resolution,

12bits radiometric resolution, 1–2 days Temporal resolution, Frequency: dekadal& Archive:2008–2017

Downloading from https://earlywarning.usgs.gov/fews/datadownloads/East%20Africa/eMODIS%20NDVI%20C6

Used To calculate yearly average NDVI to correlate it with maize yield

Eta (actual evaporation)

1 km*1 km special resolution,8 bit spectral resolution, 16 days Temporal resolution, Frequency: dekadal &

Archive: 2008–2017

downloaded freely from https://earlywarning.usgs.gov/fews/datadownloads/Continental%20Africa/Monthly%20ET%20Anomaly

Used to calculate yearly average Eta,Eta total and WRSI to correlate these variables with maize yield

Maize yield(qt/ht)

Archive data from 2008 to 2017

Central Statistical Agency annual agricultural report, 2018

To calibrate the developed model with historical crop yield statistics

Ground Truth and Accuracy Assessment Points

Using HH GPS Garmin62, generate random coordinates from each land use

Bonga University

For accuracy assessment of the supervised classification

Study area boundary

Shape file

Central Statistics Agency of Ethiopia (CSA), 2007

Used to demarcate the study area boundary