Meteorology B
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Re: Meteorology B
Good study Youtubes
Lake Effect Snow
https://www.youtube.com/watch?v=XsUFuqZ-UV0
Meteogram
https://www.youtube.com/watch?v=rWanPzobnTQ
Global Circulation - 3 Cell Model
https://www.youtube.com/watch?v=sWRSTANG-fE
Earth's Atmosphere
https://www.youtube.com/watch?v=THJpKLUJOYg
Highs and Lows
https://www.youtube.com/watch?v=Y0r2MEDEyTw
Station Model
https://www.youtube.com/watch?v=h9pwdHz0S5M
Relative Humidity & Dew Point
https://www.youtube.com/watch?v=OZh9ksAy9kc
Lake Effect Snow
https://www.youtube.com/watch?v=XsUFuqZ-UV0
Meteogram
https://www.youtube.com/watch?v=rWanPzobnTQ
Global Circulation - 3 Cell Model
https://www.youtube.com/watch?v=sWRSTANG-fE
Earth's Atmosphere
https://www.youtube.com/watch?v=THJpKLUJOYg
Highs and Lows
https://www.youtube.com/watch?v=Y0r2MEDEyTw
Station Model
https://www.youtube.com/watch?v=h9pwdHz0S5M
Relative Humidity & Dew Point
https://www.youtube.com/watch?v=OZh9ksAy9kc
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- azuritemalachite
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Re: Meteorology B
I know that a Cooling Degree Day is a day in which people should turn of the air conditioning. I think a Heating Degree Day is something similar.sciolyFTW_aku wrote:Can someone clearly define Heating Degree Days and Cooling Degree Days?
azurite>malachite>chrysocolla
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Re: Meteorology B
It's used for conserving energy: http://www.erh.noaa.gov/cle/climate/inf ... edays.html <this website explains it better than I can.sciolyFTW_aku wrote:Could you elaborate on that?
azurite>malachite>chrysocolla
Come to Pangea today all around the globe. Our formal dinners are to die for! All dishes served on tectonic plates.
Don't be Angara that all the jokes are Gondwana.
PM any rock or mineral question!
Come to Pangea today all around the globe. Our formal dinners are to die for! All dishes served on tectonic plates.
Don't be Angara that all the jokes are Gondwana.
PM any rock or mineral question!
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Re: Meteorology B
Degree Day: They way I understand it is like this.
Your house inside is 70 F outside is 50 F. That is a 20 degree difference. 1 20 degree heating day. because your home had to expend energy to keep it at 70 as it would naturally drop to 50 without turning the furnace on. If this stayed this way for 30 days, you would have 20 degree days x 30 days or 600 degree days. Now if you insulated your home the next year and the temperature variances were the same you would expect to have expended less energy. Basically looking at energy expenditure to degree days as a way of measuring energy efficiency. That's my interpretation Link below was helpful.
http://www.degreedays.net/introduction
Your house inside is 70 F outside is 50 F. That is a 20 degree difference. 1 20 degree heating day. because your home had to expend energy to keep it at 70 as it would naturally drop to 50 without turning the furnace on. If this stayed this way for 30 days, you would have 20 degree days x 30 days or 600 degree days. Now if you insulated your home the next year and the temperature variances were the same you would expect to have expended less energy. Basically looking at energy expenditure to degree days as a way of measuring energy efficiency. That's my interpretation Link below was helpful.
http://www.degreedays.net/introduction
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Re: Meteorology B
Here is an explanation of degree days.
From a meteorological standpoint, degree days are defined with respect to 65 F as a reference point. The National Weather Service calculates it as follows:
The daily high and low temperature, both measured to the nearest whole degree Fahrenheit, are averaged. If the average is not an integer, it is rounded up. Subtract this average from 65. If it is a positive quantity, it is the number of COOLING degree days for that day. If it is negative, its absolute value is the number of HEATING degree days.
As an example, yesterday in Omaha, Nebraska the high was 55 and the low 28. Averaging those two numbers:
Average = (High + Low)/2 = (55 + 28)/2 = 83/2 = 41.5. We need to round this up to 42 (it is always rounded up).
Degree Days = Average - 65 = 42 - 65 = -23. It's negative so yesterday there were 23 HEATING degree days in Omaha.
Degree days are reported daily in climate summaries issued by the National Weather Service. Monthly and yearly sums of the daily degree days are also reported. Counts for heating and cooling degree days are kept separate.
Note: the "year" for heating degree days is typically that sum from the period July 1-June 30, while cooling runs from January 1-December 31.
Degree days can be calculated with other reference values than 65, but the National Weather Service standard is 65 degrees.
From a meteorological standpoint, degree days are defined with respect to 65 F as a reference point. The National Weather Service calculates it as follows:
The daily high and low temperature, both measured to the nearest whole degree Fahrenheit, are averaged. If the average is not an integer, it is rounded up. Subtract this average from 65. If it is a positive quantity, it is the number of COOLING degree days for that day. If it is negative, its absolute value is the number of HEATING degree days.
As an example, yesterday in Omaha, Nebraska the high was 55 and the low 28. Averaging those two numbers:
Average = (High + Low)/2 = (55 + 28)/2 = 83/2 = 41.5. We need to round this up to 42 (it is always rounded up).
Degree Days = Average - 65 = 42 - 65 = -23. It's negative so yesterday there were 23 HEATING degree days in Omaha.
Degree days are reported daily in climate summaries issued by the National Weather Service. Monthly and yearly sums of the daily degree days are also reported. Counts for heating and cooling degree days are kept separate.
Note: the "year" for heating degree days is typically that sum from the period July 1-June 30, while cooling runs from January 1-December 31.
Degree days can be calculated with other reference values than 65, but the National Weather Service standard is 65 degrees.
Matthew C. Sittel
Meteorologist, University Corporation for Atmospheric Research
Offutt AFB, NE
[email protected]
Meteorologist, University Corporation for Atmospheric Research
Offutt AFB, NE
[email protected]
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Re: Meteorology B
Thank you!
mcsittel wrote:Here is an explanation of degree days.
From a meteorological standpoint, degree days are defined with respect to 65 F as a reference point. The National Weather Service calculates it as follows:
The daily high and low temperature, both measured to the nearest whole degree Fahrenheit, are averaged. If the average is not an integer, it is rounded up. Subtract this average from 65. If it is a positive quantity, it is the number of COOLING degree days for that day. If it is negative, its absolute value is the number of HEATING degree days.
As an example, yesterday in Omaha, Nebraska the high was 55 and the low 28. Averaging those two numbers:
Average = (High + Low)/2 = (55 + 28)/2 = 83/2 = 41.5. We need to round this up to 42 (it is always rounded up).
Degree Days = Average - 65 = 42 - 65 = -23. It's negative so yesterday there were 23 HEATING degree days in Omaha.
Degree days are reported daily in climate summaries issued by the National Weather Service. Monthly and yearly sums of the daily degree days are also reported. Counts for heating and cooling degree days are kept separate.
Note: the "year" for heating degree days is typically that sum from the period July 1-June 30, while cooling runs from January 1-December 31.
Degree days can be calculated with other reference values than 65, but the National Weather Service standard is 65 degrees.
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