Skip to main content

Beautiful Phenomenon - The Jet Stream

jet

Most of us think rarely about the jet stream and the impact it has on our lives but it has a huge influence on weather and climate and certainly on air travel. As the picture shows, from space it looks quite beautiful.   Here the Northern Hemisphere Jet Stream can be seen crossing Cape Breton Island in the Maritime Provinces of Eastern Canada. The Jet Stream is a narrow zone of high-speed winds typically found at altitudes of 4 to 8 miles (8-12 km) above the earth. They result from temperature contrasts between polar and tropical regions. The strongest Jet Stream winds are found in the winter when the contrast between polar and tropical regions is the greatest. Wind speeds can reach 90 to over 180 miles per hour (145 to over 290 km/h) from west to east. Jet Streams are found between latitudes 20? to near 55? north and south. During the winter months over the United States and southern Canada, the path taken by the Jet Stream can have a large influence on the weather conditions of this region. (Courtesy NASA)
Labels:

Comments

  1. dr max12 June 2009 at 01:23

    can i have more description regarding the origin of jet strem of both hemisphere

    ReplyDelete

Post a Comment

Popular posts from this blog

In praise of older women – no thank you!

Robert Graves (Th e White Goddess ) and the neo-pagans have a lot to answer for with their triple Goddess. We seem to have imbibed that whole "maiden-mother-crone" schema. It brings us all those stereotypes that I believe are best avoided – the girl who must be beautiful, the woman who must be a mother and, after a certain age, all that is left to us is our wisdom! These are gender roles that have existed for thousands of years! I tell you now, I don’t intend to be a crone – even one honoured for her wisdom! In reality, the most famous of the ancient Celtic triple Goddesses is Brigit, the daughter of the Dagda (Father God), often called "the poetess." The story goes that there were three of Brigits, all sisters--Brigit the Poetess, Brigit the Smith and Brigit the Doctor--patrons of their respective skills. But they are all the same age. Brigit’s multiplicity implies that she is a master of many arts – all valuable. Having said that, I am getting very tired of having...
8 comments
Read more

Amergin, Bard of the Milesians, lays claim to the Land of Ireland

[youtube http://www.youtube.com/watch?v=MphBfoSUWrM] Amergin, Bard of the Milesians, lays claim to the Land of Ireland I am a stag: of seven tines, I am a flood: across a plain, I am a wind: on a deep lake, I am a tear: the Sun lets fall, I am a hawk: above the cliff, I am a thorn: beneath the nail, I am a wonder: among flowers, I am a wizard: who but I Sets the cool head aflame with smoke? I am a spear: that roars for blood, I am a salmon: in a pool, I am a lure: from paradise, I am a hill: where poets walk, I am a boar: ruthless and red, I am a breaker: threatening doom, I am a tide: that drags to death, I am an infant: who but I Peeps from the unhewn dolmen, arch? I am the womb: of every holt, I am the blaze: on every hill, I am the queen: of every hive, I am the shield: for every head, I am the tomb: of every hope. Song of Amergin translated by Robert Graves , from  The White Goddess , Faber and Faber Limited, 24 Russell Square London WC1. It appears here under the principle of Fai...
4 comments
Read more

Beautiful Places - The Swallow Falls

Betws-y-Coed ("Prayer house in the wood") in Conwy, North Wales, lies in  a valley near the point where the River Conwy is joined by the River Llugwy and the River Lledr.  It was founded around a monastery in the late sixth century and nearby is the famous Swallow Falls – Rhaedr Ewynnol, in Welsh menaing literally  Foaming Waterfall !  This waterfall on the Afon Llugwy has become a familiar natural celebrity over the past 100 years and has featured on film, postcard and canvas. Rising among the towering peaks of Carnedd Llewellyn the River Llugwy runs eastward towards Capel Curig and Betws-y-Coed, before reaching Swallow falls which is the highest continuous waterfall in Wales. The river hurls itself into a spectacular chasm at the Falls. Best viewed after heavy rain the river rushes down from the mountains through tree-hung, rocky chasms. Jagged rocks and crags divide the stream into a number of foaming cascades which tumble headlong over boulders between richly wooded banks...
3 comments
Read more