Why do we have seasonsJeff GawrychMet 10

1. Why do we have seasons? Jeff Gawrych Met 10

3. Definitions Insolation � ____________________________________________________________________________________________________ Obliquity � _____________________________________ Solstice � _________________________________________________________________ ______________ Equinox ________________________________________________________________ ______ So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.

4. Distance from the Sun NOT the main reason we have seasons However, it is a factor� Depends on eccentricity Def. Presence of an atmosphere Earth is closest to sun in _________ Earth is furthest from sun in _________

6. What influences incoming solar energy? The Sun�s angle of incidence: A.k.a Overhead angle High Angle Low Angle Length of time the Sun shines each day: Long days can be deceiving� So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.

12. What influences incoming solar energy? The Sun�s angle of incidence: Lower sun angle, Higher sun angle, Length of time the Sun shines each day: Summer season, Winter season, So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.

18. On June 21st, at what latitude is the sun directly overhead at noon? On September 22nd, at what latitude is the sun directly overhead at noon? How many hours of daylight are present at the South Pole on February 20th? Where would you expect to have longer days; 45 � N on June 21st or 50�S on Dec 21st? So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.

19. Further points to consider You may be able to tell which was north is by looking at local vegetation. Why? The southern hemisphere (SH) receives slightly more solar radiation than the northern hemisphere (NH), during summer. Why isn�t the SH summer warmer than the NH summer? So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.So today, after these very broad introductory comments, we will spend a short time looking at the nature of energy in the E-A system, then we will look at some very basic radiation concepts (here I don�t want to get bogged down in complex detail, I just want to give you an overview of basic radiation concepts). However it is important that you have a basic understanding, because radiation is the primary energy source for driving atmospheric and ocean circulation and for all life on earth. Finally today, we�ll examine the mean annual global energy budget, concentrating especially on those significant climate leverage points.