Publication Abstracts

Wannebo and Rosenzweig 2003

Wannebo, A., and C. Rosenzweig, 2003: Remote sensing of US cornbelt areas sensitive to the El Niño-Southern Oscillation. Int. J. Remote Sens., 24, 2055-2067, doi:10.1080/01431160210154786.

A 16-year time-series (1982-1997) of monthly maximum Normalized Difference Vegetation Index (NDVI) values derived from coarse-scale Advanced Very High Resolution Radiometer (AVHRR) satellite images was investigated for its application in identifying agricultural regions sensitive to El Niño-Southern Oscillation (ENSO) impacts. Cumulative NDVI values over the growing season were used to test the temporal and spatial sensitivity of rainfed agricultural regions in the US cornbelt to ENSO climate teleconnections. The correlation (R) between NDVI anomalies and yield anomalies aggregated to the Agricultural Statistics Division (ASD) level was 0.59 (significant at the 99% level). Sea surface temperatures (SSTs) from the NINO3 region (between +5.0° and -5.0° latitude and 90.0° and 180.0° west longitude in the Pacific Ocean), an indicator of the ENSO phenomenon, were significantly but weakly correlated with growing season NDVI anomalies, precipitation Niño, La Niña and Neutral years related to the crop growing season were applied — one based on simultaneous Pacific NINO3 SSTs (spring-summer), and one based on following winter Pacific NINO3 SSTs. The strongest differences in Vegetation Condition Index (VCI) spatial patterns among the three ENSO categories were found using the following winter SST classification. Classification of ENSO years is a key issue in analysing ENSO impacts on agriculture as represented by the NDVI, because the regularity of annual agricultural seasons is not synchronous with the quasi-regular Pacific SST cycles.

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BibTeX Citation

@article{wa00200p,
  author={Wannebo, A. and Rosenzweig, C.},
  title={Remote sensing of US cornbelt areas sensitive to the El Niño-Southern Oscillation},
  year={2003},
  journal={Int. J. Remote Sens.},
  volume={24},
  pages={2055--2067},
  doi={10.1080/01431160210154786},
}

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RIS Citation

TY  - JOUR
ID  - wa00200p
AU  - Wannebo, A.
AU  - Rosenzweig, C.
PY  - 2003
TI  - Remote sensing of US cornbelt areas sensitive to the El Niño-Southern Oscillation
JA  - Int. J. Remote Sens.
VL  - 24
SP  - 2055
EP  - 2067
DO  - 10.1080/01431160210154786
ER  -

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