| 艾克代·沙拉木、,何淸,阿力木·阿巴斯,古丽帕丽·斯拉木.新疆克州暖季小时极端降水时空分布特征[J].沙漠与绿洲气象,2024,18(2):20~26 |
| 新疆克州暖季小时极端降水时空分布特征 |
| Spatial and temporal distribution characteristics of hourly extreme rainfall in warm season in?Kezhou of Xinjiang |
| 投稿时间：2022-09-05 修订日期：2023-04-28 |
| DOI： |
| 中文关键词: 关键词：克州 小时极端降水 时空分布 日变化特征 暖季 |
| 英文关键词:Keywords:?Kezhou ?Hourly?extreme?precipitation ?Spatial?and?temporal?distribution ?daily?variation?characteristics ?Warm Season |
| 基金项目:中国沙漠气象科学研究基金(Sqj2018010)、新疆气象局引导性计划项目(202209)、国家自然科学基金(41965002)、新疆气象科技创新发展基金指令性项目（ZD202106））(U1903113) |
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| 中文摘要: |
| 摘 要: 利用2014—2021年克州暖季( 4—10月)103个自动站逐小时降水资料，对其小时极端降水时空分布特征进行分析。结果表明:(1)降水量呈南部少于北部，平原少于山区、高海拔山区较小的特征；降水频次集中在西部山区，东南部最少；降水强度北部和平原大于西部和西南部山区。(2)克州暖季（4—10月）小时极端降水阈值、强度、频次和贡献率的局地差异明显，其贡献率高值区主要分布在平原和浅山区。(3)小时极端降水频次的高值时段为18:00—21:00，低值时段为13:00—16:00；降水强度在凌晨以及20:00—22:00较大，在12:00—13:00较小。(4)山区、浅山区和平原3类不同海拔梯度区域的小时极端降水指标存在差异，其中平原降水强度最大，频次最低；高海拔山区降水强度最低，频次最高。 |
| 英文摘要: |
| Abstract:?Based?on?the?hourly?precipitation?data?of?103?weather?stations?in?the?warm?season?(April?October)?of?Kezhou?from?2014?to?2021,?the?spatio-temporal?distribution?characteristics?of?hourly?extreme?precipitation?are?analyzed.?The?results?show?that:?(1)?The?precipitation?in?the?south?is?less?than?in?the?north,?in?the?plain?is?less?than?in?the?mountain?area,?and?in?the?high?altitude?mountain?area?is?less;?The?precipitation?frequency?is?concentrated?in?the?western?mountains,?and?the?southeast?is?the?least;?The?precipitation?intensity?in?the?north?and?plain?is?greater?than?in?the?west?and?southwest?mountains.?(2)?There?are?obvious?local?differences?in?threshold,?intensity,?frequency?and?contribution?rate?of?hourly?extreme?precipitation?in?warm?season?(April?October)?in?Kezhou,?and?the?areas?with?high?contribution?rate?are?mainly?distributed?in?plain?and?shallow?mountain?areas.?(3)?The?high?value?period?of?hourly?extreme?precipitation?frequency?is?18:00-21:00,?and?the?low?value?period?is?13:00-16:00;?The?precipitation?intensity?is?higher?in?the?early?morning?and?from?20:00?to?22:00,?and?lower?from?12:00?to?13:00.?(4)?There?are?differences?in?hourly?extreme?precipitation?indexes?among?three?types?of?regions?with?different?altitude?gradients,?namely,?mountain?area,?shallow?mountain?area?and?plain?area;?The?precipitation?intensity?is?the?lowest?and?the?frequency?is?the?highest?in?high?altitude?mountain?areas. |
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