In:
Earth System Science Data, Copernicus GmbH, Vol. 15, No. 3 ( 2023-03-16), p. 1151-1163
Abstract:
Abstract. Holdover fires are usually associated with
lightning-ignited wildfires (LIWs), which can experience a smoldering phase
or go undetected for several hours, days or even weeks before being reported.
Since the existence and duration of the smoldering combustion in LIWs is
usually unknown, holdover time is conventionally defined as the time between
the lightning event that ignited the fire and the time the fire is detected.
Therefore, all LIWs have an associated holdover time, which may range from a
few minutes to several days. However, we lack a comprehensive understanding
of holdover times. Here, we introduce a global database on holdover times of
LIWs. We have collected holdover time data from 29 different studies across
the world through a literature review and datasets assembled by authors of
the original studies. The database is composed of three data files (censored
data, non-censored data, ancillary data) and three metadata files
(description of database variables, list of references, reproducible
examples). Censored data are the core of the database and consist of
different frequency distributions reporting the number or relative frequency
of LIWs per interval of holdover time. In addition, ancillary data provide
further information to understand the methods and contexts in which the data
were generated in the original studies. The first version of the database
contains 42 frequency distributions of holdover time built with data on more
than 152 375 LIWs from 13 countries in five continents covering a time span
from 1921 to 2020. This database is the first freely available, harmonized
and ready-to-use global source of holdover time data, which may be used in
different ways to investigate LIWs and model the holdover phenomenon. The
complete database can be downloaded at
https://doi.org/10.5281/zenodo.7352172 (Moris et al., 2022).
Type of Medium:
Online Resource
ISSN:
1866-3516
DOI:
10.5194/essd-15-1151-2023
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2023
detail.hit.zdb_id:
2475469-9
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