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正—2014年6月5日,河南省煤田地质一队在青海施工的第一口卤水钾盐井察ZK02井完成抽水工作,顺利完工。这是一队在青海卤水钾盐资源勘探项目中施工的第一口大口径深水井,也是一队建队以来首次涉足的此类项目。精心准备时间回到2013年7月初的一天,在茫茫戈壁上,骄阳似火,整个大地仿佛都被炙烤过一般。中午时分,十几名钻工挥汗如雨,正在紧张地施工作业。他们哪会想到,在以后的施工 相似文献
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Dependence of Hurricane Intensity and Structures on Vertical Resolution and Time-Step Size 总被引：5，自引：0，他引：5
In view of the growing interests in the explicit modeling of clouds and precipitation, the effects of varying vertical resolution and time-step sizes on the 72-h explicit simulation of Hurricane Andrew (1992) are studied using the Pennsylvania State University/National Center for Atmospheric Research (PSU/NCAR) mesoscale model (i.e., MM5) with the finest grid size of 6 km. It is shown that changing vertical resolution and time-step size has significant effects on hurricane intensity and inner-core cloud/precipitation, but little impact on the hurricane track. In general, increasing vertical resolution tends to produce a deeper storm with lower central pressure and stronger three-dimensional winds, and more precipitation. Similar effects, but to a less extent, occur when the time-step size is reduced. It is found that increasing the low-level vertical resolution is more efficient in intensifying a hurricane, whereas changing the upper-level vertical resolution has little impact on the hurricane intensity. Moreover, the use of a thicker surface layer tends to produce higher maximum surface winds. It is concluded that the use of higher vertical resolution,a thin surface layer, and smaller time-step sizes, along with higher horizontal resolution, is desirable to model more realistically the intensity and inner-core structures and evolution of tropical storms as well as the other convectively driven weather systems. 相似文献
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脚踏着300万平方千米的蓝色国土,背负着中华民族振兴海洋事业的重托与希望.在海天之间、狂风巨浪的洗礼中走来的中国海监,迎来了十周年华诞. 十年风雨磨砺,十年战歌嘹亮,十年励精图治,十年成就辉煌. 相似文献
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世界狂风呼啸,天气不是严寒就是酷热,白天只有6个小时,生命只能演化出最原始的形态。如果没有月球,地球将会出现这种景象,科学家一直这样相信。 相似文献
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