Observed Effects of Vegetation Growth on Temperature in the Early Summer over the Northeast China Plain
<p>Location of the study area in China and spatial distribution of the meteorological sites from the China Meteorological Administration (gray shading denotes the percentage of cropland within 10 km around the site in the year 2000).</p> "> Figure 2
<p>Mean half-monthly Normalized Difference Vegetation Index (NDVI) for 1982–1991 and 1997–2006 within the study area (<b>a</b>) and the spatial pattern of NDVI changes (1997–2006 minus 1982–1991) for June (<b>b</b>).</p> "> Figure 3
<p>Changes in the monthly mean daily maximum (<span class="html-italic">T</span><sub>max</sub>) and minimum (<span class="html-italic">T</span><sub>min</sub>) temperatures during June between 1982–1991 and 1997–2006 (1997–2006 minus 1982–1991) at each site.</p> "> Figure 4
<p>Mean <span class="html-italic">T</span><sub>max</sub> and <span class="html-italic">T</span><sub>min</sub> changes at sites grouped by the amplitude of NDVI decrease (Δ<span class="html-italic">NDVI</span>), between 1982–1991 and 1997–2006 (top panel, (<b>a</b>,<b>b</b>), are derived directly from site observations; bottom panel, (<b>c</b>,<b>d</b>), are after removing the regional mean temperature changes).</p> "> Figure 5
<p>Correlations between the spatial variability of NDVI changes (Δ<span class="html-italic">NDVI</span>) and local temperature changes (<b>a</b>), Δ<span class="html-italic">T</span><sub>max</sub>; (<b>b</b>), Δ<span class="html-italic">T</span><sub>min</sub> in June from 1982–1991 to 1997–2006 across all sites in northeastern China (shaded solid circles represent sites without significant land use and land cover change).</p> "> Figure 6
<p>The same as in <a href="#atmosphere-08-00097-f005" class="html-fig">Figure 5</a>, but for the daily mean specific humidity ((<b>a</b>), Δ<span class="html-italic">SH</span>), surface latent heat flux ((<b>b</b>), Δ<span class="html-italic">λE</span>), and atmospheric downward longwave radiation ((<b>c</b>), Δ<span class="html-italic">L<sub>d</sub></span>).</p> ">
Abstract
:1. Introduction
2. Study Area, Data, and Approach
2.1. Study Area and Data
2.2. Data Analysis
3. Results
3.1. Changes in NDVI and Temperature
3.2. Changes in Surface Energy Budget and Atmospheric Vapor
4. Discussion and Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Li, X.; Zhang, X.; Zhang, L. Observed Effects of Vegetation Growth on Temperature in the Early Summer over the Northeast China Plain. Atmosphere 2017, 8, 97. https://doi.org/10.3390/atmos8060097
Li X, Zhang X, Zhang L. Observed Effects of Vegetation Growth on Temperature in the Early Summer over the Northeast China Plain. Atmosphere. 2017; 8(6):97. https://doi.org/10.3390/atmos8060097
Chicago/Turabian StyleLi, Xiaxiang, Xuezhen Zhang, and Lijuan Zhang. 2017. "Observed Effects of Vegetation Growth on Temperature in the Early Summer over the Northeast China Plain" Atmosphere 8, no. 6: 97. https://doi.org/10.3390/atmos8060097