The GOFC/GOLD-Fire program has a number of
stated goals which cover the range of perceived needs of the fire community. The
goals are as follows:
a) To
increase user awareness by providing an improved understanding of the utility of
satellite fire products for resource management and policy within the United
Nations and at regional national and local levels.
One of the largest problems for
satellite data users is to gain an understanding of the products that are
available and how they can be used. This includes satellite data and information
as well as data collected by more conventional means at the national and
international level. Clearly a dialogue needs to be developed, providing
feedback from users as to what is needed and from providers as to what they can
deliver. Sharing data and information is prerequisite for effective global
monitoring and will be one of the underpinnings of
IGOS. Encouraging organizations and
institutions to adopt a policy of open data sharing will be a primary challenge
for GOFC/GOLD.
b) To
encourage the development and testing of standard methods for fire danger rating
suited to different ecosystems and to enhance current fire early warning
systems.
There are several fire danger rating
systems currently in use around the World. There is a need to document these
systems and to understand their reliability and the relationship between the
different methods and their applicability to different fire and management
regimes. Timely delivery of meteorological and satellite data at the appropriate
spatial scale is an important prerequisite for operational fire risk mapping.
This requires easy access data delivery systems and easy-to-operate models.
c) To
establish an operational network of fire validation sites and protocols,
providing accuracy assessment for operational products and a testbed for new or
enhanced products, leading to standard products of known accuracy.
For data products to be used in
numerical models or in a decision-making framework it is important to understand
the reliability and the accuracy of the products. Up until recently satellite
fire products or national fire statistics have been generated with little or no
indication of accuracy. Methods are currently being developed to determine the
accuracy of national fire maps and the global and regional satellite products.
This can involve comparison with other airborne or satellite products or by
analysis of independent observations of known accuracy. Validation of global
products is a labor intensive and costly activity and there are real advantages
in cost and resource sharing between national and regional programs.
d) To
enhance fire product use and access by developing operational multi-source fire
and GIS data and making these available over the Internet.
One of the obstacles to using satellite
data is the availability of data products. Information on where to go to get
data and how to read and interpret the products needs to be made more readily
available. At present the data from different systems are provided by different
means and in different formats. GOFC/GOLD is promoting ease of access to
multiple archives and standard data formats. Similarly when the data are
obtained they need to be readily combined with other geospatial data. The
availability of WEB-GIS data will lead to an advance in current capability.
Promoting affordable data for the common good will be an important message from
GOFC/GOLD to the operational agencies and data providers.
e) To
develop an operational global geostationary fire network providing observations
of active fires in near real time.
The diurnal cycle of fire activity means
that polar orbiting satellite systems provide only a sample of the daily fire
activity. In some regions fire are short-lived lasting no more than a couple of
hours. In other systems fires will burn throughout the day. Geostationary
systems providing frequent acquisitions give perhaps the best opportunity to
detect active fires from space. However in the past, these systems have been
limited by their spatial resolution. New generation geostationary systems with
1km spatial resolution or higher and with temporal resolutions of 15-30 minutes,
provide an enhanced capability for operational monitoring. Developing an
international network of geostationary satellites with standard products would
provide an important advance for monitoring active fires.
f) To
establish operational polar orbiters with fire monitoring capability by
providing i) operational moderate resolution long-term global fire products to
meet user requirements and distributed ground stations providing enhanced
regional products; ii) operational high resolution data acquisition allowing
fire monitoring and post-fire assessments.
Moderate resolution polar orbiters have
been used to develop the current suite of global products and will remain an
important source of data provision. Ensuring that current and future operational
sensors include the capability to detect fires is an important goal. The lead
time between project concept, instrument design and operation is long and there
is a need for a well articulated set of requirements. Polar orbiters (e.g.
AVHRR, MODIS, ATSR, VEGETATION, Landsat, ASTER) are currently being used for
detecting active fires, mapping burned area, assessing fire susceptibility and
estimating fire emissions. Improvements in these systems for fire monitoring can
be envisioned and need to be shared with instrument design engineers and data
providers. High resolution thermal and reflected data are needed to provide information at a finer spatial scale, for example to monitor and characterize active fires, to assess fire damage and to monitor post fire recovery.
High resolution polar orbiters need to be moved into the operational domain for
land monitoring and the data need to be made available at prices affordable to
the user community.
g) To create
emissions product suites, developed and implemented providing annual and near
real-time emissions estimates with available input data.
The research
community is starting to explore the use of satellite data in generating
regional fire emissions. The combination of satellite time series data on the
timing and areal extent of burning, dynamically modeled fuel load, indicators of
vegetation state and ground based emission factors provide the basis for
emission products. As part of the emission product suite, it will be important
to provide the data inputs and an estimation of the output product accuracy.