ATM 1050 Aldrich Exam 4 With
Complete Solution
Nowcasting - ANSWER Present-6 hours
Short Range - ANSWER 1-3 days
Medium Range - ANSWER 3-5 days
Long Range - ANSWER 5-10 days
Extended Range - ANSWER up to 90 days
Persistence forecasting - ANSWER What happened yesterday will likely
happen today.
Climatology - ANSWER The long-term average of weather conditions are
used to predict the weather for a given day.
Trend Method - ANSWER Use the short-term trend of temperature or
precipitation based on nearby observations
Analogue Forecasting - ANSWER Find a date in the past where the weather
map looks exactly as it does now. "pattern matching"
Numerical Modeling - ANSWER Equations are put into sophisticated
programs that run on
high-speed computers (supercomputers
NAM - - ANSWER North american mesoscale model
GFS - - ANSWER Global forecast system
, RUC - - ANSWER rapid update cycle
WRF - - ANSWER weather research and forecast model
How would you choose a numerical model to base your forecast off of? -
ANSWER Look at it previous history:
How did it handle the current situation?
How has it performed lately?
What are some of the present day problems associated with modern-day
weather forecasting? - ANSWER -Computer forecast models make
assumptions that aren't always correct
-Regions of the world don't have adequate surface observations
-Computer models don't always interpret the surface observations correctly
The distance between grid points on some models are too large
What does a station model plot measure and what does it tells us? - ANSWER
Temp, dewpoint, pressure, wind, wind direction, precipitation, sky cover, air
pressure
The circle in the middle of a station model plot tells us what? - ANSWER Sky
Cover (total amount of clouds)
Complete Solution
Nowcasting - ANSWER Present-6 hours
Short Range - ANSWER 1-3 days
Medium Range - ANSWER 3-5 days
Long Range - ANSWER 5-10 days
Extended Range - ANSWER up to 90 days
Persistence forecasting - ANSWER What happened yesterday will likely
happen today.
Climatology - ANSWER The long-term average of weather conditions are
used to predict the weather for a given day.
Trend Method - ANSWER Use the short-term trend of temperature or
precipitation based on nearby observations
Analogue Forecasting - ANSWER Find a date in the past where the weather
map looks exactly as it does now. "pattern matching"
Numerical Modeling - ANSWER Equations are put into sophisticated
programs that run on
high-speed computers (supercomputers
NAM - - ANSWER North american mesoscale model
GFS - - ANSWER Global forecast system
, RUC - - ANSWER rapid update cycle
WRF - - ANSWER weather research and forecast model
How would you choose a numerical model to base your forecast off of? -
ANSWER Look at it previous history:
How did it handle the current situation?
How has it performed lately?
What are some of the present day problems associated with modern-day
weather forecasting? - ANSWER -Computer forecast models make
assumptions that aren't always correct
-Regions of the world don't have adequate surface observations
-Computer models don't always interpret the surface observations correctly
The distance between grid points on some models are too large
What does a station model plot measure and what does it tells us? - ANSWER
Temp, dewpoint, pressure, wind, wind direction, precipitation, sky cover, air
pressure
The circle in the middle of a station model plot tells us what? - ANSWER Sky
Cover (total amount of clouds)
