Carbon And Our Changing Climate

A Couple of Friends It’s Not Your Grandmother’s Needlepoint

Assustador!!

How Do Hurricanes Form?

Hurricanes are the most violent storms on Earth. People call these storms by other names, such as typhoons or cyclones, depending on where they occur.

The scientific term for ALL of these storms is tropical cyclone. Only tropical cyclones that form over the Atlantic Ocean or eastern and central Pacific Ocean are called “hurricanes.”

Whatever they are called, tropical cyclones all form the same way.

Tropical cyclones are like giant engines that use warm, moist air as fuel. That is why they form only over warm ocean waters near the equator. This warm, moist air rises and condenses to form clouds and storms.

As this warmer, moister air rises, there’s less air left near the Earth’s surface. Essentially, as this warm air rises, this causes an area of lower air pressure below.

This starts the ‘engine’ of the storm. To fill in the low pressure area, air from surrounding areas with higher air pressure pushes in. That “new” air near the Earth’s surface also gets heated by the warm ocean water so it also gets warmer and moister and then it rises.

As the warm air continues to rise, the surrounding air swirls in to take its place. The whole system of clouds and wind spins and grows, fed by the ocean’s heat and water evaporating from the surface.

As the storm system rotates faster and faster, an eye forms in the center. It is vey calm and clear in the eye, with very low air pressure.

Tropical cyclones usually weaken when they hit land, because they are no longer being “fed” by the energy from the warm ocean waters. However, when they move inland, they can drop many inches of rain causing flooding as well as wind damage before they die out completely. 

There are five types, or categories, of hurricanes. The scale of categories is called the Saffir-Simpson Hurricane Scale and they are based on wind speed.

How Does NASA Study Hurricanes?

Our satellites gather information from space that are made into pictures. Some satellite instruments measure cloud and ocean temperatures. Others measure the height of clouds and how fast rain is falling. Still others measure the speed and direction of winds.

We also fly airplanes into and above hurricanes. The instruments aboard planes gather details about the storm. Some parts are too dangerous for people to fly into. To study these parts, we use airplanes that operate without people. 

To learn more about how we study hurricanes, visit: https://www.nasa.gov/mission_pages/hurricanes/main/index.html

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.

Um texto acima das paixões.

Wisteria Sinensis - Bonsai 盆栽. 

A cor de novembo

Novembro Marrom A cor da Terra A cor das lágrimas De um povo Calado Pela Lama.

Fantástico!!

What’s that green streak in front of the Andromeda galaxy? A meteor. While photographing the Andromeda galaxy last Friday, near the peak of the Perseid Meteor Shower, a sand-sized rock from deep space crossed right in front of our Milky Way Galaxy’s far-distant companion. The small meteor took only a fraction of a second to pass through this 10-degree field. The meteor flared several times while braking violently upon entering Earth’s atmosphere. The green color was created, at least in part, by the meteor’s gas glowing as it vaporized. Although the exposure was timed to catch a Perseids meteor, the orientation of the imaged streak seems a better match to a meteor from the Southern Delta Aquariids, a meteor shower that peaked a few weeks earlier

Object Names: Andromeda Galaxy

Image Type: Astronomical

Credit: Fritz Helmut Hemmerich

Time And Space

É lindo quando eles aparecem no meu jardim!!!

Nihon no kotori (Japanese small birds), cute helpful chart by @T_marohiko listing the following species:

First row - 百舌 mozu (bull-headed shrike) / 目黒 meguro (bonin white-eye) / 川蝉 kawasemi (kingfisher) / ツグミ tsugumi (dusky thrush) / 鶯 uguisu (japanese bush warbler)

Second row - 雀 suzume (sparrow) / 燕 tsubame (swallow) / 椋鳥 mukudori (grey starling) / 駒鳥 komadori (japanese robin) / 赤啄木鳥 akagera (great spotted woodpecker)

Third Row - 頬白 hoojiro (meadow bunting) / シマエナガ shimaenaga (silver-throated dasher) / 鷽 uso (japanese bullfinch) / 菊戴 kikuitadaki (goldcrest) / 白鶺鴒 hakusekirei (black-backed wagtail)

Fourth row - 五十雀 gojuukara (eurasian nuthatch) / 四十雀 shijuukara (japanese tit) / 小雀 kogara (willow tit) / 日雀 higara (coal tit) / 山雀 yamagara (varied tit)

Fifth row - 黄鶲 kibitaki (narcissus flycatcher) / 小瑠璃 koruri (siberian blue robin) / 大瑠璃 ooruri (blue-and-white flycatcher) / 瑠璃鶲 ruribitaki (red-flanked bluetail) / 尉鶲 joubitaki (daurian redstart)

BAYAH: O GENOCÍDIO ESQUECIDO – A REVOLTA DOS HEREROS E NAMA NA NAMÍBIA

Hitachi Seaside Park, Japan.