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Author Spotlight: Impact of Physical Barriers on Rodent Populations in Farmland Areas

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Quantifying the Anthropogenic Footprint in Eastern China.

Chunlei Meng^1,2, Youjun Dou¹

¹Institute of Urban Meteorology, China Meteorological Administration, Beijing, 100089, China.

Scientific Reports

|April 13, 2016

Summary

Anthropogenic heat (AH) significantly impacts urban heat island (UHI) effects. This study uses nighttime light data to map AH, revealing it warms eastern China by up to 1K annually, with less effect on warm, wet cities.

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Area of Science:

Urban climatology
Environmental science
Remote sensing

Background:

Urban heat island (UHI) is a significant urban climate phenomenon.
Accurate parameterization of anthropogenic heat (AH) is crucial for UHI studies.
A universal method for spatial AH pattern parameterization is currently lacking.

Purpose of the Study:

To develop and apply a method for parameterizing the spatial pattern of anthropogenic heat (AH).
To quantify the influence of AH on land surface temperature (LST) in eastern China and major cities.
To investigate the drivers of AH's impact on LST.

Main Methods:

Utilized NOAA DMSP/OLS nighttime light data to parameterize the spatial distribution of AH.
Conducted two experiments using the Common Land Model (CoLM) to assess AH's influence on LST.
Analyzed relative LST differences between control and contrast runs to identify driving factors.

Main Results:

Annual mean heating caused by AH reaches up to 1K in eastern China.
The study quantified AH's impact on LST in eastern China and 24 large cities.
Anthropogenic heat's warming effect is less pronounced in relatively warm and wet urban environments.

Conclusions:

Nighttime light data provides a viable method for parameterizing AH spatial patterns.
AH contributes significantly to LST variations in urban areas.
Urban climate characteristics, such as warmth and humidity, modulate the impact of AH on LST.