DJF MAM JJA SON
NF
I
ATSR NOAA AQUA TERRA TRMM
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
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(B)
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L
AU
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OC
T
NO
V
DE
C
NF
I
ATSR NOAA AQUATERRA TRMM
1.0
0.8
0.6
0.4
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0.0
Fig. 1 - Geographical location of the La Plata Basin with the high, middle, low, and delta sections of the Paraná river in south America (modified TUCCI and CLARKE, 1998).
Temporal and spatial variability of fire occurrence appears to be controlled
by climatic variations and anthropogenic activities. The existence of large spatial
variability between the different fire detection products in the LPB indicates the
need for validation of these products with field data.
BORGHETTI, J.R.; OLIVEIRA, J.A.; SBARDELINI, E., 1993. Aspectos Ambientais da Bacia do Prata. In: Instituto Acqua, Simpósio Internacional sobre Aspectos Ambientais da Bacia do Prata, Foz do Iguaçu.
TUCCI, C.E.M.; CLARKE, R.T., 1998. Environmental Issues in the La Plata Basin. Water Resources Development , vol. 14 N.2 p 157-173.
Study Area
La Plata River Basin (LPB) (Figure 1);
Represents 17% of the continent of South America (BORGHETTI, 1993).
19
97
19
98
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99
20
00
20
01
20
02
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03
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Anom
aly
of
fire
occurr
ence (
%)
-60
-40
-20
0
20
40
60
80ATSR NOAA AQUA TERRA TRMM
INTRODUCTION
MAIN RESULTS
MATERIALS AND METHODS
OBJECTIVE
REFERENCES & SUPPORT
Luiz Scandelai Júnior1; Geoffrey D. Mercer1; Florent Mouillot2; João Paulo R. A. D. Barbosa1
1- Laboratório de Ecofisiologia Vegetal- DBI, Universidade Federal de Lavras: CP 3037, Lavras – MG, Brazil.2- Institut de recherche pour le Développement - Centre d'Ecologie Fonctionnelle et Evolutive, Montpellier, France.
.
To compare five global remote sensing databases, and evaluate them based
on their capacity to describe the fire dynamics in the LPB through the various
techniques and tools of the Geographic Information System (GIS).
Database and Analysis
Time Series: 1995 to 2009;
Parameters: Normalized Fire Index (NFI) for the comparison of databases in
space (resolution of 0.5°) and time (monthly, seasonally, and anually) for fires in
the LPB.
CONCLUSION
Fig. 3- Spatial variability of fire occurrence in the LPB. (ATSR, TRMM and NOAA (1998 – 2009); TERRA and AQUA (2002-2009)).
Fig. 2 - (A) and (B) Monthly and seasonal variability of fires in the LPB using the NFI. The symbols represent the mean and standard error bars. (C) Inter-annual variability (%) in relation to the mean fire occurrence in the LPB. Remote sensing products used: ATSR, TRMM e NOAA (1998 – 2009); AQUA e TERRA (2002-2009). Centre d'Ecologie Fonctionnelle
et Evolutive
Due to a lack of field data or of a validated remote sensing product for use in
tropical regions, little is known about the fire regime and the potential impacts of
fires in the La Plata Basin (LPB). The LPB is the most important economic
region, and contains the largest population in South America. An alternative
approach for field studies in the LPB is the use of global products for the remote
sensing of fires.
(A)
(C)
Fire
Occ
urre
nce
(%)
SPACE-TIME COMPARISON BETWEEN DIFFERENT FIRE DETECTION PRODUCTS IN THE LA PLATA BASIN (1995-2009)