For the polar vortex area on the Northern Hemisphere, in summer the polar vortex boundary withdraw about 30 latitudes than winter.
冬夏季北半球极涡面积的比较发现夏季和冬季相比极涡边界收缩了近30个纬度。
The true wild roses add up to a few hundred species from the temperate and subtropic zones on the northern hemisphere, including North Africa, Ethiopia, Himalaya and the Philippines.
这是真正野生的玫瑰，可以根据气候不同，从温带到亚热带共分布着几百种野生品种，包括北非，埃塞俄比亚，喜马拉雅山区和菲律宾。
But the harvest season in the northern hemisphere is being marked by turmoil on global wheat markets.
不过北半球收获季节正在遭遇全球小麦市场动荡。
"Webasically have seen just a big outbreak of Arctic air" over populatedareas of the Northern Hemisphere, Arndt said. "The Arctic air hasreally turned itself loose on us."
阿恩特说：“我们看到的只是北极空气在北半球人口密集地区的一次大爆发，北极空气真的向我们发威了。”
Worries are focused on dry weather in the northern hemisphere, which is affecting next year's winter wheat crop - planted recently - in producers such as the us and Russia.
忧虑情绪的重点是，北半球的干旱气候会影响美国、俄罗斯等产粮大国明年的冬小麦收成——这些小麦最近刚刚播种下去。
On the left is M97 in the constellation Ursa Major, also known in the northern hemisphere as the Owl Nebula.
左边是M 97在大熊座，又称北半球的夜枭星云。
"The data is good in the northern hemisphere and it gets better in recent times, but it's more patchy in the southern hemisphere - the southern Ocean, the southern Indian Ocean, and so on." the.
北半球的数据质量较好，最近也变得更好了，但南半球的数据比较零碎(包括南部海洋，南部印度洋等)。
"We basically have seen just a big outbreak of Arctic air" over populated areas of the Northern Hemisphere, Arndt said. "the Arctic air has really turned itself loose on us."
阿恩特说：“我们看到的只是北极空气在北半球人口密集地区的一次大爆发，北极空气真的向我们发威了。”
The summer solstice that falls this year on June 21 marks the longest day of the year in the Northern Hemisphere, sunlight-wise.
夏至的来临使6月21日成为北半球今年白昼最长的一天——阳光又在玩游戏。
On March 20 or 21 of each year, the Northern Hemisphere reaches the vernal equinox and enjoys the signs of spring.
每年的3月20日或21日，北半球迎来春分，享受春天的景象。
This is the lowest recorded temperature for any permanently inhabited location on Earth and the lowest temperature recorded in the Northern Hemisphere.
对于地球上任何一个永久居住点来说，这都是有记录以来的最低气温，也是北半球有记录以来的最低气温。
Based on the monthly data of five teleconnection pattern indices in Northern Hemisphere and SOI during the years of 1951 -1990, the discriminant model for diagnosing el Nino event is presented.
根据1951—1990年的北半球五个遥相关型的逐月强度指数以及南方涛动指数，建立了一个用于厄尔尼诺统计诊断的判别模型。
On the other hand the change of frequences of tropical cyclone on the southern hemisphere is associated with the strength of the cold air in northern hemisphere.
南半球澳洲附近、南太平洋、南印度洋的热带气旋数的变化与北半球亚洲大陆的冷空气活动有密切的联系。
The heat and cold sources are distributed at the stereographic projection map of Northern Hemisphere on the dishpan bottom.
将热源及冷源分布在绘有北半球极赤射面投影地图的底面上。
A freshwater fish(Lota lota) of the Northern Hemisphere, related to and resembling the cod and having barbels on the nose and chin.
江鳕一种淡水鱼（江鳕），生长在北半球，与鳕鱼有亲缘关系并且相像，鼻部和下颚处有鱼须。
Most of those events were found in the glacial and deep sea sediments, mainly occurring on the high latitudes of the Northern Hemisphere.
指出这些事件大部分首先发现于冰川和深海沉积物中，且集中在北半球的高纬度地带。
Large hawk of the northern hemisphere that feeds chiefly on small rodents and is beneficial to farmers.
北半球大型鹰，主要以小的啮齿动物为食，对农民有益。
People in the northern hemisphere receive the most sunshine and daylight hours on the day of the summer solstice.
在夏至这一天，北半球的人们获得的太阳辐射量和日照时间都最多。
Characteristics of the Northern Hemisphere sub-tropical high seasonal splitting from spring to summer and its possible mechanisms have been analyzed on the basis of climatological data sets.
分析了春夏转换季节中亚洲季风区北半球副热带高压断裂的气候学特征及其可能机制。
On March 20 or 21 of each year, the Northern Hemisphere is reaching the vernal equinox and enjoying the signs of spring.
在每年的三月二十或者二十一日，北半球到达春分时节并欣喜地迎接春天到来的迹象。
On this day, in the Northern Hemisphere the period of daytime is the shortest of the year and the period of night is longest.
这一天是北半球全年中白天最短、夜晚最长的一天。
On the summer solstice, the Northern Hemisphere receives more sunlight than on any other day of the year, but that doesn't mean the first day of summer is also the hottest day of summer.
在夏至这天，北半球会获得比该年中任何一天都多的阳光，但是这并不意味着夏至日是夏季中最热的一天。
On the summer solstice, the Northern Hemisphere receives more sunlight than on any other day of the year, but that doesn't mean the first day of summer is also the hottest day of summer.
在夏至这天，北半球会获得比该年中任何一天都多的阳光，但是这并不意味着夏至日是夏季中最热的一天。
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