New global temperature data will inform study of climate impacts on
health, agriculture

Date:
October 13, 2020
Source:
University of Minnesota
Summary:
A new data set provides high-resolution, daily temperatures from
around the globe that could prove valuable in studying human
health impacts from heat waves, risks to agriculture, droughts,
potential crop failures, and food insecurity.



FULL STORY ==========================================================================
A seemingly small one-to-two degree change in the global climate can dramatically alter weather-related hazards. Given that such a small change
can result in such big impacts, it is important to have the most accurate information possible when studying the impact of climate change. This
can be especially challenging in data sparse areas like Africa, where
some of the most dangerous hazards are expected to emerge.


==========================================================================
A new data set published in the journal Scientific Data provides high- resolution, daily temperatures from around the globe that could prove
valuable in studying human health impacts from heat waves, risks to agriculture, droughts, potential crop failures, and food insecurity.

Data scientists Andrew Verdin and Kathryn Grace of the Minnesota
Population Center at the University of Minnesota worked with colleagues
at the Climate Hazards Center at the University of California Santa
Barbara to produce and validate the data set.

"It's important to have this high-resolution because of the wide-ranging impacts -- to health, agriculture, infrastructure. People experiencing
heat waves, crop failures, droughts -- that's all local," said Verdin,
the lead author.

By combining weather station data, remotely sensed infrared data and the weather simulation models, this new data set provides daily estimates
of 2- meter maximum and minimum air temperatures for 1983-2016. Named CHIRTS-daily, this data provides high levels of accuracy, even in areas
where on-site weather data collection is sparse. Current efforts are
focused on updating the data set in near real time.

"We know that the next 20 years are going to bring more extreme heat
waves that will put millions or even billions of people in harm's
way. CHIRTS-daily will help us monitor, understand, and mitigate these
rapidly emerging climate hazards," said Chris Funk, director of the
Climate Hazards Center.

Additionally, the people who are most vulnerable are often located in
areas where publicly available weather station data are deteriorating
or unreliable.

Areas with rapidly expanding populations and exposures (e.g. Africa,
Central America, and parts of Asia) can't rely on weather observations. By combining different sources of weather information, each contributes
to provide detail and context for a more accurate, global temperature
dataset.

"We're really excited about the possibilities for fine-scale,
community-focused climate-health data analyses that this dataset can
support. We're excited to see researchers use it," said co-author
Kathryn Grace.


========================================================================== Story Source: Materials provided by University_of_Minnesota. Note:
Content may be edited for style and length.


========================================================================== Journal Reference:
1. Andrew Verdin, Chris Funk, Pete Peterson, Martin Landsfeld, Cascade
Tuholske, Kathryn Grace. Development and validation of the
CHIRTS-daily quasi-global high-resolution daily temperature data
set. Scientific Data, 2020; 7 (1) DOI: 10.1038/s41597-020-00643-7 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2020/10/201013134312.htm

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