Jump to content
Snow?
Local
Radar
Cold?
IGNORED

Pyrocumulus clouds


Recommended Posts

Posted
  • Location: Camborne
  • Location: Camborne

Posted Image

 

On June 12, 2013, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this image of the Silver fire burning east of Silver City, New Mexico. In addition to producing gray smoke plumes, the fire spawned a pyrocumulus cloud—a tall, cauliflower-shaped cloud that billowed up above the smoke.

 

Pyrocumulus clouds are similar to cumulus clouds, but the heat that forces the air to rise (which leads to cooling and condensation of water vapor) comes from fire instead of sun-warmed ground. In satellite images, pyrocumulus cloud appear as opaque white patches hovering over darker smoke.

 

Scientists monitor pyrocumulus clouds closely because the clouds can inject smoke and pollutants high into the atmosphere. As pollutants are dispersed by wind, they can affect air quality over a broad area. As noted by the University Maryland at Baltimore County (UMBC) Smog Blog, the smoke from the fire contributed to elevated concentrations of particulate matter over much of the southeastern United States on June 13, 2013.

 

A preliminary analysis by University of Wisconsin atmospheric scientist Scott Bachmeier indicated that the maximum height of the pryocumulus cloud from Silver fire was between 10 and 11 kilometers (6 and 7 miles). The temperature at the top of the clouds was between -45°C to -50°C, about 20 degrees warmer than the temperatures at the top of other nearby clouds that were not produced by fires.

 

http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=81402&src=nha

 

Link to comment
Share on other sites

  • 2 months later...

Check this out....Atmosphere on steroids.... Errr.... Time lapse shows process....http://www.youtube.com/watch?v=97BrYoq1ly0&feature=youtube_gdata&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+MostPopularVideosFromYoutube---English+(Most+Popular+Videos+From+Youtube++---+English)

Edited by MidAtlanticob
  • Like 1
Link to comment
Share on other sites

  • Chilly with an increasing risk of frost

    Once Monday's band of rain fades, the next few days will be drier. However, it will feel cool, even cold, in the breeze or under gloomy skies, with an increasing risk of frost. Read the full update here

    Netweather forecasts
    Netweather forecasts
    Latest weather updates from Netweather

    Dubai Floods: Another Warning Sign for Desert Regions?

    The flooding in the Middle East desert city of Dubai earlier in the week followed record-breaking rainfall. It doesn't rain very often here like other desert areas, but like the deadly floods in Libya last year showed, these rain events are likely becoming more extreme due to global warming. View the full blog here

    Nick F
    Nick F
    Latest weather updates from Netweather 2

    Week Ahead: Cool but largely dry until later in the week, when low pressure returns

    We keep a chilly northerly flow going through much of the coming week, especially noticeable in the east. Cloud and rain spreading south Monday, but after that, most places largely dry until later in the week, when it looks to turn more showery. Read the full update here

    Netweather forecasts
    Netweather forecasts
    Latest weather updates from Netweather
×
×
  • Create New...