NOAA IMS雪冰产品在青藏高原积雪监测中的适用性分析
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除多,扎西顿珠,次丹玉珍
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Analysis on applicability of NOAA IMS snow and ice products in snow cover monitoring over the Tibetan Plateau
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Duo CHU,Dunzhu ZHAXI,Yuzhen CIDAN
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表4 2015年9月至2019年5月青藏高原IMS 4 km产品精度评价结果
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Table 4 Assessment results of IMS 4 km product on the TP from September 2015 to May 2019
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| 积雪季（年-月） | 积雪季 总天数/d | 08：00平均 积雪日数/d | 平均最大雪深/cm | 平均最小雪深/cm | 平均 雪深/cm | 漏判率 /% | 误判率 /% | 积雪分类精度/% | 无雪分类精度/% | 总体 精度/% |
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| 平均 | 273.2 | 49 | 15 | 0.6 | 4.3 | 45.5 | 17.1 | 47.2 | 90.9 | 80.1 | | 2010-09/2011-05 | 273 | 49 | 15 | 0.5 | 3.0 | 56.5 | 17.5 | 46.7 | 89.2 | 77.9 | | 2011-09/2012-05 | 274 | 67 | 18 | 0.5 | 3.3 | 44.7 | 16.7 | 53.6 | 88.0 | 80.5 | | 2012-09/2013-05 | 273 | 48 | 22 | 0.5 | 6.8 | 51.3 | 13.2 | 49.2 | 90.0 | 82.2 | | 2013-09/2014-05 | 273 | 48 | 12 | 0.5 | 2.9 | 42.6 | 19.0 | 39.4 | 91.9 | 78.4 | | 2014-09/2015-05 | 273 | 60 | 16 | 0.6 | 6.4 | 35.0 | 18.5 | 60.7 | 90.2 | 80.2 | | 2015-09/2016-05 | 274 | 33 | 8 | 0.6 | 2.1 | 54.5 | 14.6 | 41.9 | 93.6 | 83.2 | | 2016-09/2017-05 | 273 | 34 | 14 | 0.7 | 3.6 | 45.1 | 16.6 | 46.5 | 94.2 | 81.4 | | 2017-09/2018-05 | 273 | 30 | 8 | 0.7 | 2.2 | 36.0 | 19.8 | 35.8 | 95.8 | 80.5 | | 2018-09/2019-05 | 273 | 72 | 21 | 0.8 | 8.1 | 43.7 | 17.9 | 50.9 | 85.6 | 76.4 |
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