Exploring Connections between Global Climate Indices and African Vegetation Phenology
Variations in agricultural production due to rainfall and temperature fluctuations are a primary cause of food insecurity on the continent in Africa. Agriculturally destructive droughts and floods are monitored from space using satellite remote sensing by organizations seeking to provide quantitativ...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20090028513 2023-05-15T17:34:22+02:00 Exploring Connections between Global Climate Indices and African Vegetation Phenology Brown, Molly E. deBeurs, Kirsten Vrieling, Anton Unclassified, Unlimited, Publicly available [2009] application/pdf http://hdl.handle.net/2060/20090028513 unknown Document ID: 20090028513 http://hdl.handle.net/2060/20090028513 Copyright, Distribution as joint owner in the copyright CASI Earth Resources and Remote Sensing 2009 ftnasantrs 2018-06-09T22:58:22Z Variations in agricultural production due to rainfall and temperature fluctuations are a primary cause of food insecurity on the continent in Africa. Agriculturally destructive droughts and floods are monitored from space using satellite remote sensing by organizations seeking to provide quantitative and predictive information about food security crises. Better knowledge on the relation between climate indices and food production may increase the use of these indices in famine early warning systems and climate outlook forums on the continent. Here we explore the relationship between phenology metrics derived from the 26 year AVHRR NDVI record and the North Atlantic Oscillation index (NAO), the Indian Ocean Dipole (IOD), the Pacific Decadal Oscillation (PDO), the Multivariate ENSO Index (MEI) and the Southern Oscillation Index (SOI). We explore spatial relationships between growing conditions as measured by the NDVI and the five climate indices in Eastern, Western and Southern Africa to determine the regions and periods when they have a significant impact. The focus is to provide a clear indication as to which climate index has the most impact on the three regions during the past quarter century. We found that the start of season and cumulative NDVI were significantly affected by variations in the climate indices. The particular climate index and the timing showing highest correlation depended heavily on the region examined. The research shows that climate indices can contribute to understanding growing season variability in Eastern, Western and Southern Africa. Other/Unknown Material North Atlantic North Atlantic oscillation NASA Technical Reports Server (NTRS) Indian Pacific Soi ENVELOPE(30.704,30.704,66.481,66.481) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing |
spellingShingle |
Earth Resources and Remote Sensing Brown, Molly E. deBeurs, Kirsten Vrieling, Anton Exploring Connections between Global Climate Indices and African Vegetation Phenology |
topic_facet |
Earth Resources and Remote Sensing |
description |
Variations in agricultural production due to rainfall and temperature fluctuations are a primary cause of food insecurity on the continent in Africa. Agriculturally destructive droughts and floods are monitored from space using satellite remote sensing by organizations seeking to provide quantitative and predictive information about food security crises. Better knowledge on the relation between climate indices and food production may increase the use of these indices in famine early warning systems and climate outlook forums on the continent. Here we explore the relationship between phenology metrics derived from the 26 year AVHRR NDVI record and the North Atlantic Oscillation index (NAO), the Indian Ocean Dipole (IOD), the Pacific Decadal Oscillation (PDO), the Multivariate ENSO Index (MEI) and the Southern Oscillation Index (SOI). We explore spatial relationships between growing conditions as measured by the NDVI and the five climate indices in Eastern, Western and Southern Africa to determine the regions and periods when they have a significant impact. The focus is to provide a clear indication as to which climate index has the most impact on the three regions during the past quarter century. We found that the start of season and cumulative NDVI were significantly affected by variations in the climate indices. The particular climate index and the timing showing highest correlation depended heavily on the region examined. The research shows that climate indices can contribute to understanding growing season variability in Eastern, Western and Southern Africa. |
author |
Brown, Molly E. deBeurs, Kirsten Vrieling, Anton |
author_facet |
Brown, Molly E. deBeurs, Kirsten Vrieling, Anton |
author_sort |
Brown, Molly E. |
title |
Exploring Connections between Global Climate Indices and African Vegetation Phenology |
title_short |
Exploring Connections between Global Climate Indices and African Vegetation Phenology |
title_full |
Exploring Connections between Global Climate Indices and African Vegetation Phenology |
title_fullStr |
Exploring Connections between Global Climate Indices and African Vegetation Phenology |
title_full_unstemmed |
Exploring Connections between Global Climate Indices and African Vegetation Phenology |
title_sort |
exploring connections between global climate indices and african vegetation phenology |
publishDate |
2009 |
url |
http://hdl.handle.net/2060/20090028513 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(30.704,30.704,66.481,66.481) |
geographic |
Indian Pacific Soi |
geographic_facet |
Indian Pacific Soi |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
CASI |
op_relation |
Document ID: 20090028513 http://hdl.handle.net/2060/20090028513 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766133166094942208 |