Trend analysis of the pathfinder AVHRR land (PAL) NDVI data for the deserts of central Asia

Kirsten M. De Beurs; Geoffrey M. Henebry

doi:10.1109/LGRS.2004.834805

Trend analysis of the pathfinder AVHRR land (PAL) NDVI data for the deserts of central Asia

Kirsten M. De Beurs^*, Geoffrey M. Henebry

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic

83 Citations (Scopus)

Abstract

We analyzed spatially averaged normalized difference vegetation index (NDVI) time series from the Pathfinder Advanced Very High Resolution Radiometer (AVHRR) Land (PAL) dataset of 11 desert and semidesert ecoregions in Central Asia using standard statistical tests for discontinuities and trends. Results from the test for discontinuities reveal that seven ecoregions display significant differences in the data acquired by the AVHRRs on the National Oceanic and Atmospheric Administration satellite 11 (NOAA-11) versus the data acquired by AVHRR on other NOAA satellites (NOAA-7, NOAA-9, and NOAA-14). Across the more than 2 × 10⁶ km² of deserts and semideserts in the selected Central Asian ecoregions, a significant upward trend in NDVI is evident during the tenure of NOAA-11 (1989-1994). This trend is not found during any other period. We argue that the data from the PAL NDVI dataset for NOAA-11 will pose problems for land surface change analyses, if these significant sensor-related artifacts are ignored. We do not find these artifacts in data from the other three satellites (NOAA-7, NOAA-9, and NOAA-14). We suggest that the comparison of data from any combination of these three AVHRRs can be used for land surface change analyses, but that the inclusion of NOAA-11 AVHRR NDVI data in trend analyses may result in the detection of spurious trends.

Original language	English
Pages (from-to)	282-286
Number of pages	5
Journal	IEEE Geoscience and Remote Sensing Letters
Volume	1
Issue number	4
DOIs	https://doi.org/10.1109/LGRS.2004.834805
Publication status	Published - Oct 2004
Externally published	Yes

Keywords

Advanced Very High Resolution Radiometer (AVHRR)
Deserts
Discontinuity
Land cover land use change
Normalized difference vegetation index (NDVI)
Statistical analysis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Trend analysis of the pathfinder AVHRR land (PAL) NDVI data for the deserts of central Asia",

abstract = "We analyzed spatially averaged normalized difference vegetation index (NDVI) time series from the Pathfinder Advanced Very High Resolution Radiometer (AVHRR) Land (PAL) dataset of 11 desert and semidesert ecoregions in Central Asia using standard statistical tests for discontinuities and trends. Results from the test for discontinuities reveal that seven ecoregions display significant differences in the data acquired by the AVHRRs on the National Oceanic and Atmospheric Administration satellite 11 (NOAA-11) versus the data acquired by AVHRR on other NOAA satellites (NOAA-7, NOAA-9, and NOAA-14). Across the more than 2 × 106 km2 of deserts and semideserts in the selected Central Asian ecoregions, a significant upward trend in NDVI is evident during the tenure of NOAA-11 (1989-1994). This trend is not found during any other period. We argue that the data from the PAL NDVI dataset for NOAA-11 will pose problems for land surface change analyses, if these significant sensor-related artifacts are ignored. We do not find these artifacts in data from the other three satellites (NOAA-7, NOAA-9, and NOAA-14). We suggest that the comparison of data from any combination of these three AVHRRs can be used for land surface change analyses, but that the inclusion of NOAA-11 AVHRR NDVI data in trend analyses may result in the detection of spurious trends.",

keywords = "Advanced Very High Resolution Radiometer (AVHRR), Deserts, Discontinuity, Land cover land use change, Normalized difference vegetation index (NDVI), Statistical analysis",

author = "{De Beurs}, {Kirsten M.} and Henebry, {Geoffrey M.}",

year = "2004",

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doi = "10.1109/LGRS.2004.834805",

language = "English",

volume = "1",

pages = "282--286",

journal = "IEEE Geoscience and Remote Sensing Letters",

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TY - JOUR

T1 - Trend analysis of the pathfinder AVHRR land (PAL) NDVI data for the deserts of central Asia

AU - De Beurs, Kirsten M.

AU - Henebry, Geoffrey M.

PY - 2004/10

Y1 - 2004/10

N2 - We analyzed spatially averaged normalized difference vegetation index (NDVI) time series from the Pathfinder Advanced Very High Resolution Radiometer (AVHRR) Land (PAL) dataset of 11 desert and semidesert ecoregions in Central Asia using standard statistical tests for discontinuities and trends. Results from the test for discontinuities reveal that seven ecoregions display significant differences in the data acquired by the AVHRRs on the National Oceanic and Atmospheric Administration satellite 11 (NOAA-11) versus the data acquired by AVHRR on other NOAA satellites (NOAA-7, NOAA-9, and NOAA-14). Across the more than 2 × 106 km2 of deserts and semideserts in the selected Central Asian ecoregions, a significant upward trend in NDVI is evident during the tenure of NOAA-11 (1989-1994). This trend is not found during any other period. We argue that the data from the PAL NDVI dataset for NOAA-11 will pose problems for land surface change analyses, if these significant sensor-related artifacts are ignored. We do not find these artifacts in data from the other three satellites (NOAA-7, NOAA-9, and NOAA-14). We suggest that the comparison of data from any combination of these three AVHRRs can be used for land surface change analyses, but that the inclusion of NOAA-11 AVHRR NDVI data in trend analyses may result in the detection of spurious trends.

AB - We analyzed spatially averaged normalized difference vegetation index (NDVI) time series from the Pathfinder Advanced Very High Resolution Radiometer (AVHRR) Land (PAL) dataset of 11 desert and semidesert ecoregions in Central Asia using standard statistical tests for discontinuities and trends. Results from the test for discontinuities reveal that seven ecoregions display significant differences in the data acquired by the AVHRRs on the National Oceanic and Atmospheric Administration satellite 11 (NOAA-11) versus the data acquired by AVHRR on other NOAA satellites (NOAA-7, NOAA-9, and NOAA-14). Across the more than 2 × 106 km2 of deserts and semideserts in the selected Central Asian ecoregions, a significant upward trend in NDVI is evident during the tenure of NOAA-11 (1989-1994). This trend is not found during any other period. We argue that the data from the PAL NDVI dataset for NOAA-11 will pose problems for land surface change analyses, if these significant sensor-related artifacts are ignored. We do not find these artifacts in data from the other three satellites (NOAA-7, NOAA-9, and NOAA-14). We suggest that the comparison of data from any combination of these three AVHRRs can be used for land surface change analyses, but that the inclusion of NOAA-11 AVHRR NDVI data in trend analyses may result in the detection of spurious trends.

KW - Advanced Very High Resolution Radiometer (AVHRR)

KW - Deserts

KW - Discontinuity

KW - Land cover land use change

KW - Normalized difference vegetation index (NDVI)

KW - Statistical analysis

U2 - 10.1109/LGRS.2004.834805

DO - 10.1109/LGRS.2004.834805

M3 - Article

AN - SCOPUS:8344267535

SN - 1545-598X

VL - 1

SP - 282

EP - 286

JO - IEEE Geoscience and Remote Sensing Letters

JF - IEEE Geoscience and Remote Sensing Letters

IS - 4

ER -

Trend analysis of the pathfinder AVHRR land (PAL) NDVI data for the deserts of central Asia

Abstract

Keywords

UN SDGs

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