基于AMSR2多频亮温的黑河流域中上游土壤水分估算研究
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陆峥,韩孟磊,卢麾,彭雪婷,蒙莎莎,刘进,杨晓帆
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Estimating Soil Moisture in the Middle and Upper Reaches of the Heihe River Basin based on AMSR2 Multi-brightness Temperature
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Zheng Lu,Menglei Han,Hui Lu,Xueting Peng,Shasha Meng,Jin Liu,Xiaofan Yang
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表3 2014年7月1日~2014年10月31日时间段内各土壤水分产品验证表现统计表
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Table 3 Performance statistics of the retrieved soil moisture from 1st July, 2014 to 31st Oct., 2014
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| 产品名称 | 升轨 | 降轨 | RMSE | R | BIAS | RMSE | R | BIAS | WATER-NET 1 | JAXA | 0.271 | 0.432 | -0.266 | 0.322 | 0.377 | -0.317 | LPRM_C1 | 0.529 | -0.002 | 0.510 | 0.360 | 0.173 | 0.313 | LPRM_C2 | 0.543 | 0.038 | 0.526 | 0.377 | 0.192 | 0.332 | LPRM_X | 0.182 | 0.283 | 0.136 | 0.232 | 0.405 | 0.191 | GLDAS | 0.094 | -0.402 | -0.074 | 0.130 | -0.386 | -0.119 | 估算土壤水分 | 0.040 | 0.302 | 0.014 | 0.029 | 0.651 | -0.014 | WATER-NET 2 | JAXA | 0.229 | 0.418 | -0.222 | 0.244 | 0.021 | -0.237 | LPRM_C1 | 0.622 | -0.058 | 0.602 | 0.486 | -0.111 | 0.425 | LPRM_C2 | 0.635 | -0.036 | 0.618 | 0.511 | -0.090 | 0.451 | LPRM_X | 0.202 | 0.595 | 0.163 | 0.325 | 0.167 | 0.277 | GLDAS | 0.074 | 0.352 | -0.058 | 0.073 | 0.369 | -0.057 | 估算土壤水分 | 0.064 | 0.623 | 0.051 | 0.071 | 0.510 | 0.055 | WATER-NET 3 | JAXA | 0.177 | 0.440 | -0.155 | 0.236 | 0.319 | -0.223 | LPRM_C1 | 0.544 | 0.467 | 0.524 | 0.381 | 0.444 | 0.339 | LPRM_C2 | 0.561 | 0.478 | 0.543 | 0.410 | 0.449 | 0.366 | LPRM_X | 0.145 | 0.300 | 0.095 | 0.231 | 0.572 | 0.198 | GLDAS | 0.141 | 0.415 | -0.133 | 0.140 | 0.379 | -0.130 | 估算土壤水分 | 0.043 | 0.279 | 0.013 | 0.059 | 0.622 | 0.040 | WATER-NET 4 | JAXA | 0.299 | 0.535 | -0.288 | 0.333 | 0.439 | -0.321 | LPRM_C1 | 0.491 | 0.321 | 0.468 | 0.349 | 0.524 | 0.296 | LPRM_C2 | 0.507 | 0.295 | 0.485 | 0.380 | 0.517 | 0.325 | LPRM_X | 0.153 | -0.077 | 0.024 | 0.213 | 0.416 | 0.156 | GLDAS | 0.220 | 0.267 | 0.044 | 0.219 | 0.222 | -0.201 | 估算土壤水分 | 0.107 | 0.212 | -0.060 | 0.081 | 0.396 | -0.0357 | WATER-NET 1~4 4个像元上的平均 | JAXA | 0.242 | 0.472 | -0.235 | 0.283 | 0.357 | -0.277 | LPRM_C1 | 0.539 | 0.276 | -0.519 | 0.389 | 0.351 | -0.337 | LPRM_C2 | 0.554 | 0.288 | -0.536 | 0.413 | 0.358 | -0.361 | LPRM_X | 0.155 | 0.300 | -0.104 | 0.242 | 0.447 | -0.199 | GLDAS | 0.132 | 0.227 | 0.121 | 0.141 | 0.201 | 0.131 | 估算土壤水分 | 0.047 | 0.378 | 0.004 | 0.037 | 0.666 | 0.009 |
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