Modeling the spatiotemporal response of dew point temperature, air temperature and rainfall to land use land cover change over West Africa
Modeling the spatiotemporal response of dew point temperature, air temperature and rainfall to land use land cover change over West Africa
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DOI：
10.1007/s40808-021-01094-8
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发表时间：
2021-01-18
影响因子：
3
通讯作者：
Naabil, Edward
中科院分区：
文献类型：
--
作者：
Achugbu, Ifeanyi Chukwudi;Olufayo, Ayorinde A.;Naabil, Edward
将更新的MCD 12 Q1 MODIS土地利用/土地覆盖（LULC）数据应用到天气研究与预报（WRF）模式中，研究了LULC变化对西非地区露点温度（DPT）、温度、降水及相关参数时空分布的影响。WRF模式模拟了6种LULC情景，包括建成（Bu），部分砍伐I和II（PDI/PDII），部分绿化（PA），完全绿化（TA）和完全砍伐（TD）。将MCD 12 Q1 LULC数据集成到WRF模式中，于2012年5月至9月在西澳大利亚州以12 km水平分辨率进行了8次模拟。将更新的MODIS LU数据集成到WRF模式中，结果显示出较小的RMSE。BU和TD情景总体上降低了露点温度，而露点温度显著降低（升高）的地区蒸散量也减少（增加），感热（SH）增加（减少）。SH的增加可能是城市化地区降水增加的一个因素。所有的造林方案降低了温度，由于削弱的SH。萨赫勒的影响导致降雨量增加，这是由于ET增加。几内亚地区（PDI/PDII）的森林砍伐减少了萨赫勒和萨赫勒-撒哈拉交界处以及整个地区的降水量。只有TA的情况下，增加降水的萨赫勒-撒哈拉交界处，由于ET的增加。LULC的变化对降水的影响是复杂的，更深入的分析，对大气环流的主要特征的影响，建议在未来的研究。
The study validated the use of an updated MCD12Q1 MODIS Land Use Land Cover (LULC) data into Weather Research and Forecasting (WRF) model and investigated the effects of LULC change on the spatiotemporal pattern of dew point temperature (DPT), temperature, precipitation and some associated parameters over West Africa (WA). Series of WRF model simulations were carried out with 6 LULC scenarios, which include Built-up (Bu), Partial Deforest I and II (PDI/PDII), Partial Afforest (PA), Total Afforest (TA) and Total Deforest (TD). MCD12Q1 LULC data was integrated into WRF model to carry out eight simulations from May-September, 2012 at 12 km horizontal resolution over WA. The integration of updated MODIS LU data into WRF model showed improvement with lesser RMSE. The BU and TD scenario generally decreases dew point temperature while the areas with remarkable decrease (increase) in dew point temperature also have a decrease (increase) in evapotranspiration and an increase (decrease) in Sensible Heat (SH). Increased SH could be a factor for the increased precipitation over the urbanized area. All afforestation options decreased the temperature due to weakening of the SH. Afforestation of the Sahel led to an increase in rainfall, which is attributed to increase in ET. Deforestation of the Guinea zone (PDI/PDII) reduced the precipitation in Sahel and Sahel-Sahara interface and the entire area. Only the TA scenario increased precipitation over the Sahel-Sahara interface due to increased ET. The effects of LULC change on precipitation are complex as more in-depth analysis of the effects on major features of the general circulation of WA is recommended for future research.