Sunday, 30 September 2012

id like to be under the green sea





Why is the sea  blue and green? According to NASA  "The reason the ocean is blue is due to the absorption and scattering of light. The blue wavelengths of light are scattered, similar to the scattering of blue light in the sky.  In water, absorption is strong in the red and weak in the blue, thus red light is absorbed quickly in the ocean leaving blue.
If there are any particles suspended in the water, they will increase the scattering of light. In coastal areas, runoff from rivers, resuspension of sand and silt from the bottom by tides, waves and storms and a number of other substances can change the color of the near-shore waters. Some types of particles (in particular, the cells of phytoplankton, also referred to as algae) can also contain substances that absorb certain wavelengths of light, which alters its characteristics.
The most important light-absorbing substance in the oceans is chlorophyll, which phytoplankton use to produce carbon by photosynthesis. Due to this green pigment - chlorophyll - phytoplankton preferentially absorb the red and blue portions of the light spectrum (for photosynthesis) and reflect green light. So, the ocean over regions with high concentrations of phytoplankton will appear as certain shades, from blue-green to green, depending upon the type and density of the phytoplankton population there. The basic principle behind the remote sensing of ocean color from space is this: the more phytoplankton in the water, the greener it is....the less phytoplankton, the bluer it is."


Marine life
                                                        
sea weeds 


Thursday, 20 September 2012

storm in a teacup

storm in a teacup 5x5" 


This painting was inspired by recent cold winters here in Ireland. Irish people love to talk weather. Any snow and frost can start us off but in reality we don't get the severe winters of northern US or mainland Europe, However we do like to boast that we are on the same latitude as Newfoundland , Canada's Hudson Bay, Russia's Kamchatka Peninsula and southern Alaska. Ireland has a temperate maritime climate. This is caused by the "Gulf Stream" - a current of warm water and air that flows from the Gulf of Mexico towards Europe. It is this that allows people in western Europe to live more easily in these northern latitudes. Without the Gulf Stream, Ireland's average January temperature would be around 15ºC cooler than today - between -10ºC and -15ºC.


Tuesday, 18 September 2012

Monday, 17 September 2012

Forest figure

forest figure print 5"x5 "