Community Research and Development Information Service - CORDIS


Understanding vegetation fires dynamics in relation to different environmental conditions requires dedicated tools for spatial analysis. In this context directional statistics, in particular the rose diagram technique, is proposed as an appropriate tool for investigating the possible relationships between spatial and temporal patterns of fire distribution, as detected from space orbiting platforms, and point measurements of tropospheric chemistry.

Rose diagram provides a synthesis for any given point of the number of fires, along with statistical data on distance, occuring in any particular direction from this point. Spatial analysis of active fires mapped from AVHRR 1-km images, acquired on a daily basis during the EXPRESSO field campaign in central Africa, is done with the city of Bangui as reference point of chemistry measurements. Similar analysis is presented for the fire maps derived from AVHRR-GAC time series, over a 3 year period, for all sub-saharian Africa. The rose diagram technique represents a very efficient tool which can be used to introduce fire source of gases and particles in atmospheric chemistry models.

Additional information

Authors: BRIVIO P A, IRRS, National Research Council, Milan (IT);OBER G, IRRS, National Research Council, Milan (IT);GREGOIRE J M, SAI/GVM, Ispra (IT);NIELSEN N C, University of Copenhagen (DK)
Bibliographic Reference: Article: Journal of Geophysical Research, 1998
Record Number: 199910240 / Last updated on: 1999-03-12
Original language: en
Available languages: en