DJF MAM JJA SON

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ATSR NOAA AQUA TERRA TRMM

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ATSR NOAA AQUATERRA TRMM

1.0

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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

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00

20

01

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Anom

aly

of

fire

occurr

ence (

%)

-60

-40

-20

0

20

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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)