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 楼主| 发表于 2014-12-17 00:37 | 显示全部楼层

March 05 2014(Ⅰ)

Heavy Precipitation for the Pacific Northwest and Northern California
Heavy rainfall is expected for the Pacific Northwest over the next 48 hours. A strong upper level disturbance approaching the Northwest coast combined with ample Pacific moisture and upslope flow will allow for heavy rain to affect coastal Oregon and Washington and later Northern California. Pacific moisture will stream over the Cascades and into the Northern Rockies producing heavy snows in the higher elevations and valley rain. As the upper level disturbance moves across the intermountain west, precipitation will overspread the region and reach the Central Rockies in 48 hours. Colder air filtering in aloft will reduce snow levels in time across the west. This image was taken by GOES West at 2100Z on March 5, 2014.

西北太平洋及北加利福尼亚州的强降水
西北太平洋将于未来48小时中出现强降水。逼近美国西北海岸的强烈高空扰动将与来自太平洋充沛的水汽及上升气流一起为俄勒冈州沿岸地区、华盛顿州及北加利福尼亚州带来大雨。来自太平洋的水汽将翻越卡斯卡德山脉进入落基山脉北部并为高海拔地区带来大雪,谷地亦将出现降雨。随着扰动继续向西部山区移动,落基山脉北部至中部地区在未来48小时中将普遍出现降水。随着冷空气在高空中发散,西部地区的降雪将随时间推移逐渐减弱。本张图片由GOES West卫星摄于2014年3月5日协调世界时21时。
620x350x1513v1_20140305-westcoast.png.pagespeed.ic.duavWZ6stA.jpg
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 楼主| 发表于 2014-12-17 01:06 | 显示全部楼层

March 05 2014(Ⅱ)

Is El Ni?o Returning?
NOAA\'s Climate Prediction Center today issued an El Ni?o Watch indicating a 50% chance of El Ni?o developing during the summer or fall. El Ni?o, which is marked by warmer-than-average sea surface temperatures in the eastern Pacific Ocean near the equator, is known for influencing weather across the U.S. and other parts of the globe. Currently, the Climate Prediction Center is monitoring a very warm pool of water in the Western Pacific, and is seeing this pool move eastward, which will likely warm the Eastern Pacific in the coming months. The warm water in the Western Pacific is shown here using the three-dimensional GODAS ocean temperature data.
If the El Ni?o conditions strengthen, a tongue of warmer-than-average water will be seen in sea surface temperature data. You can monitor these conditions, as well as past El Ni?o and La Ni?a events, in NOAA View .

厄尔尼诺归来?
今日美国国家海洋和大气管理局(NOAA)气候预报中心(CPC)发布的厄尔尼诺展望指出,厄尔尼诺事件在夏季及秋季发生的概率为50%。以对美国及全球其他地区的天气造成重大影响而闻名的厄尔尼诺事件的显著特征是赤道东太平洋的海水表面温度高于平均水平。目前气候预报中心在西太平洋监测到的强暖池有向东移动趋势,这可能将导致东太平洋的水温在未来几个月中出现正距平。西太平洋的暖水区在以下采用全球海洋资料同化系统(Global Ocean Data Assimilation System,GODAS)海温三维数据绘制的图像中清晰可见。
倘若厄尔尼诺事件加强,从海水表面温度数据中便将看出明显的暖舌。您可以通过NOAA视窗对此进行监测或回顾过去发生的厄尔尼诺及拉尼娜事件。
620x350x1514v1_20140306-ENSO.png.pagespeed.ic.SVGjB95oDy.jpg
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 楼主| 发表于 2014-12-19 15:52 | 显示全部楼层

March 11 2014

Bombogenesis in the North Atlantic
According to the NOAA Ocean Prediction Center, there were 20 unique hurricane force wind events between during January and February 2014 . Fourteen storms underwent the process called \"bombogenesis ,\" whereby a cyclone rapidly intensifies, dropping at least 24 millibars in pressure over 24 hours. The number and intensity of North Atlantic storms is higher than normally observed – and this feature can be seen in wind speed data from the period. In this image, blues indicate areas with wind speeds that are faster than the 30-year historical average (1981-2010). In addition, the high pressure driving the drought conditions over the Western U.S. can also be seen in the lower than average wind speeds (brown colors) in the Northeast Pacific. The North Atlantic is a major shipping corridor, and the models and analysis provided by the Ocean Prediction Center help mariners to navigate these waters more safely.
An unlabeled version can be downloaded here .

北大西洋的“炸弹生成”
美国国家海洋和大气管理局(NOAA)海洋预报中心(OPC)称,2014年1月2月间共监测到20起罕见的飓风风速事件。其中14场风暴经历了气旋强度迅速加强,且24小时内气压下降幅度达24毫巴及以上的所谓“炸弹生成(bombogenesis)”过程。北大西洋风暴数量及强度高于正常水平的这一特征同样也反映到了周期风速数据当中。图中的蓝色区域表示风速高于30年(1981-2010年)历史平均水平的地区,同时东北太平洋低于平均水平的风速(棕色)则反映出了美国西部由高压所引发的干旱。北大西洋是重要的航运通道,海洋预报中心所提供的模型及分析将有助于海员更安全的航行于这篇水域。
未经标注的图像可点击此处下载。
1515v1_20140311-WindSpeed-NorthAtlantic.png
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 楼主| 发表于 2014-12-19 16:28 | 显示全部楼层

March 12 2014

Strengthening Winter Storm Impacting Northeast; Severe Weather Possible in Mid-Atlantic
High winds, heavy snows and ice are expected with a strengthening storm system impacting the northeast, with severe weather possible over the Mid-Atlantic on Wednesday. A surface low over the Ohio Valley will rapidly deepen while it tracks across the northern Mid-Atlantic states and off the New Jersey coast on Wednesday. Strong winds surrounding the strengthening storm will pull an abundance of Gulf and Atlantic moisture inland, fueling a swath of moderate to heavy snows to the northwest of the low track. Widespread accumulations are expected from the Lower Great Lakes to northern New England with some locations possibly measuring a foot or more of fresh snow. A mix of sleet and freezing rain are expected closer to the coast where warmer Atlantic air will be moving in aloft. Farther south, strong to severe thunderstorms will be possible with the storm\'s dynamic cold front sweeping through the Mid-Atlantic states. Conditions should gradually clear out over the Northeast on Thursday as the surface low slowly tracks up Eastern Seaboard and into the Canadian Maritimes, but strong northwesterly flow behind the storm will make for a blustery day across much of the Northeast and Mid-Atlantic states. This image was taken by GOES East at 1715Z on March 12, 2014.

袭击美国东北部加强中的冬季风暴或将令中太平洋地区出现恶劣天气
本周三,正在加强的风暴系统将为美国东北部地区带来狂风大雪及冰冻天气,而中大西洋地区也有可能出现恶劣天气。周三位于俄亥俄河谷的近地面低压系统将于穿过中大西洋诸州北部向新泽西州沿岸移动的过程中迅速加强。加强中的风暴系统将带动来自墨西哥湾及太平洋的丰富水汽进入内陆并在其路径西北部地区造成广泛的中到大雪。大湖南区至新英格兰地区北部将普遍出现积雪,其中部分地区新雪深度或将超过1英尺(约合30.5厘米),而来自大西洋较为温暖的空气则将使得沿岸地区出现雨夹雪及冻雨。再往南,与风暴系统相关的冷锋将在扫过中大西洋诸州时引发较强雷暴天气。随着周四时近地面低压缓慢移出美国东海岸并移入加拿大滨海诸省,美国东北部情况将逐渐好转,但风暴过后强大的西北气流仍将使得美国东北部及中大西洋诸州大部出现大风天气。本张图片由GOES East卫星摄于2014年3月12日协调世界时17时15分。
1516v1_20140312-eastcoast.png
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 楼主| 发表于 2014-12-20 00:26 | 显示全部楼层

March 14 2014

Aerosol Optical Thickness Over Europe
The atmosphere is a mix of gases and fine particles called aerosols. Some of these particles, like ash and dust, are large enough that they can be seen by the human eye, while others are microscopic. Regardless of their size, aerosols scatter and absorb light, which means they can be detected from space. Aerosol optical thickness data is shown here from the Suomi NPP VIIRS sensor. Areas with thick aerosol layers (i.e., a lot of light scattering/absorbing) are colored in deep orange, areas with low aerosol optical thickness are colored light yellow. This image shows the weekly average aerosol optical thickness over Europe from March 3 through March 9, 2014 as shown in NOAA View.
An unannotated version of this image can be found here.
Information about air quality in European cities can be found at CITEAIR, an operational service for European Cities.

欧洲气溶胶光学厚度
气体及微小的颗粒物混合所成的大气被称作气溶胶。其中一些大的颗粒如灰分及灰尘是肉眼可见的,而另一些需借助显微镜才能看见。无论其粒径大小,气溶胶都会散射并吸收光线,这使得在太空中对其进行监测成为可能。下图显示的是由Suomi NPP卫星上搭载的可视红外成像辐射计套件(VIIRS)所获得的气溶胶光学厚度数据。图中气溶胶层较厚(即对光线散射/吸收较强)的地区显示为深橙色,而气溶胶光学厚度较低的区域则显示为淡黄色。这张发布于NOAA视窗的图像显示了2014年3月3日-3月9日欧洲周平均气溶胶光学厚度。
本张图像未经标注的版本可在此处获得。
若要获得欧洲城市的空气质量可登陆服务于欧洲城市的城市空气网站。
1517v1_20140314-Aerosol.png
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 楼主| 发表于 2014-12-20 00:48 | 显示全部楼层

March 17 2014

Winter Storm for Central Appalachians and mid-Atlantic on St. Patrick\'s Day
An unusually late winter storm is hammering the Mid-Atlantic with at least six inches of snow for parts of West Virginia, Virginia, Maryland, Delaware, and southern New Jersey, with a mixture of wintry precipitation farther to the south. This is in response to moisture over-running the cold air mass that is situated to the north of a stationary front near the southeast coast. Winter storm warnings are currently in effect for these areas. Farther to the south, numerous showers and thunderstorms can be expected over Florida and into the Deep South in the warm sector of the surface low. This image was taken by GOES East at 1345Z on March 17, 2014.

圣帕特里克节阿巴拉契亚山脉中部及中大西洋地区的冬季暴风雪
来得异常之晚的冬季暴风雪正在影响中大西洋地区并为西弗吉尼亚州、弗吉尼亚州、马里兰州、特拉华州及新泽西州南部的部分地区带来超过6英寸(约合15.2厘米)的降雪,而该地区的南部则将出现雨雪混合天气。这是由于水汽向东南部沿岸地区准静止锋北侧冷气团运动所造成的。针对这些地区的冬季暴风雪警告现已发布。再往南,近地面低压的暖区将在佛罗里达州至深南部地区一带引发诸多阵雨及雷暴。本张图片由GOES East卫星摄于2014年3月17日协调世界时13时45分。
1518v1_20140317-eastcoast.png
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 楼主| 发表于 2014-12-20 01:21 | 显示全部楼层

March 20 2014

2014 Vernal Equinox in the United States
There are only two times of the year when the Earth\'s axis is tilted neither toward nor away from the sun, resulting in a \"nearly\" equal amount of daylight and darkness at all latitudes. These events are referred to as Equinoxes and will occur on March 20th at 1057 am MDT (Vernal Equinox - the first day of Spring) and again on September 22nd at 829 pm MDT (Autumnal Equinox - the first day of fall). The word equinox is derived from two Latin words - aequus (equal) and nox (night). At the equator, the sun is directly overhead at noon on these two equinoxes. The \"nearly\" equal hours of day and night is due to refraction of sunlight. or a bending of the light\'s rays that causes the sun to appear above the horizon when the actual position of the sun is below the horizon. Additionally, the days become a little longer at the higher latitudes (those at a distance from the equator) because it takes the sun longer to rise and set. Therefore, on the equinox and for several days before and after the equinox, the length of day will range from about 12 hours and six and one-half minutes at the equator, to 12 hours and 8 minutes at 30 degrees latitude, to 12 hours and 16 minutes at 60 degrees latitude. This image was taken by GOES East at 1745Z on March 20, 2014.

2014年春分日的美国
在一年中仅有的两个时刻中,地球自转轴既不朝向也不远离太阳倾斜,从而使得各纬度地区当日白昼及黑夜时间近似相等。这两个时刻被称作昼夜平分点,其出现时间分别为3月20日美国山地时间10时57分(春分-春季之始)及9月22日美国山地时间8时29分(秋分-秋季之始)。昼夜平分点(equinox)一词由拉丁语中的“平等”(aequus)及“夜晚”(nox)两词派生而来,赤道阳光直射方向在昼夜平分点的正午与地面垂直。而之所以称白昼及黑夜时间近似相等是因为阳光的折射导致光路弯曲,从而使得肉眼看到太阳出现在地平线上时太阳的实际位置仍在地平线之下。除此之外,由于阳光到达所需时间较长,因此高纬度地区的白昼将略微偏长(取决于其与赤道的距离)。因此在昼夜平分点前后数天,赤道地区的白昼长度为12小时6分半钟,而30°纬度带为12小时8分钟,60°纬度带则为12小时16分钟。本张图片由GOES East卫星摄于2014年3月20日协调世界时17时45分。
620x350x1519v1_20140320-vernalequinox.png.pagespeed.ic.iHdw6N9HRS.jpg
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 楼主| 发表于 2015-11-23 18:25 | 显示全部楼层

March 21 2014

Ocean Models Showing Development of Large Atlantic Gale
NOAA weather models are beginning to resolve a storm system expected to develop off the coast of New England mid-next week. By March 27, 2014, the system may generate seas exceeding 45 feet in some areas of the North Atlantic east of Maine and Nova Scotia. This image shows the combined effect of swell and waves using NOAA’s Wave Watch III model (valid March 27, 2014 at 6 Z; run on March 21 at 0 Z).
An unlabeled version of the image can be downloaded here.

海洋模型显示大西洋强风区的发展
美国国家海洋和大气管理局(NOAA)开始利用气象模型分析当前于洋面上发展并可能于下周中期影响新英格兰地区的风暴系统。预计到2014年3月27日,该系统将使得缅因州和新斯科舍省东部的北大西洋部分地区洋面高度上升45英尺(约合13.7米)以上。本张图片显示了由海浪预报数值模式Ⅲ预报的涌浪及海浪叠加高度(预报时效2014年3月27日协调世界时6时,发布时间3月21日协调世界时0时)。
未经标注的图像可点击此处下载。
1520v1_20140321-WaveHeight.png
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 楼主| 发表于 2015-11-23 18:44 | 显示全部楼层

March 24 2014

Muddy waters flow into the Rio de la Plata
Muddy waters flow into the Rio de la Plata estuary in this relatively cloud free image taken by the Suomi NPP satellite on March 23, 2014. The city of Buenos Aires, Argentina can be seen along the left bank of the estuary, along with the city of Montevideo, Uruguay on the far northern coast.

浑浊的拉普拉塔河
本张显示了拉普拉塔河口处浑水且无云的图像由Suomi NPP卫星摄于2014年3月23日。此外图中还能辨认出位于河口左侧的阿根廷布宜诺斯艾利斯市,在其北侧的沿岸地区还能看见乌拉圭的沿海城市蒙得维的亚。
1521v1_20140324-RioDeLaPlata.png
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 楼主| 发表于 2015-11-23 19:11 | 显示全部楼层

March 25 2014

Powerful Storm Expected off East Coast Tuesday Evening
A storm will develop off the Southeast Coast and under go rapid deepening as the storm moves northeastward toward the Maritime Provinces by Wednesday evening. The system will produce showers and thunderstorms over Florida on Tuesday morning ending by evening, while light to moderate rain intensifies to moderate to heavy rain along parts of the Southeast Coast through late Tuesday evening. Snow will develop over parts of the Central Appalachians into parts of the Mid-Atlantic on Tuesday. Heavy snow will develop over parts of the Northern Mid-Atlantic and New England Coast overnight Tuesday into Wednesday morning. The snow will taper off over parts of Maine on Wednesday evening. This image was taken by GOES East at 1515Z on March 25, 2014.

猛烈的风暴预计将于周二傍晚移出美国东海岸
该风暴移出美国东南部沿岸地区之后预计将在周三傍晚之前朝东北移向沿海诸州并快速增强。受其影响,佛罗里达州在周二白天至傍晚将有阵雨及雷暴,东南部沿海地区在周二傍晚晚些时候的天气将由小到中雨转为中到大雨。同时阿巴拉契亚山脉中部及中大西洋诸州的部分地区在本周二将出现降雪。在周二晚上至周三上午,中大西洋诸州北部及新英格兰地区沿岸的部分地区还将出现大雪。到了周三傍晚,缅因州部分地区的降雪将逐渐停止。本张图片由GOES East卫星摄于2014年3月25日协调世界时15时15分。
1522v1_20140325-eastcoast.png
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