ATSC 201
HWK 11
Chapter 9
N1a)
Reduce to sea level the pressure the following station observations of pressure,
height, and virtual temperature. Assume no temperature change over the past
12 hours. a. P(kPa)=102kPa, z= -30m, Tv= 40 degrees C
Given:
Pstn=

ATSC 201
Hwk 5
Chapter 15
N15a)
Given a lightening discharge current (kA) below and a voltage diference
between the beginning to end of the lightning channel of 10^10 V, find (1) the
resistance of the ionized lightning channel and (2) the amount of charge

ATSC 201
HWK 12
Chapter 13
N3a)
For latitude 40 degrees N and troposphere of depth 11 km, find the north-south
amplitude (km) of upper- atmosphere (Rossby) waves triggered by mountains,
given an average mountain- range height (km) of: a) 0.4 km
Given:
lat

ATSC 201
Prof. Stull
Fall 2012
Midterm Exam
(open books, notes, calculator)
(50 points 1 minute/point)
Name: _
Student Number: _
1. Given the attached tephigram. The environmental temperature sounding is already plotted on it.
a) (2 points) At what pressu

Atsc 20 Fall 2011
Jessica Leung
43008101
Hwk2: Chapter 8
For a radar with 0.5 deg elevation angle
mounted on a 10m tower, calculate and plot
the height of the radar-beam centerline
vs.range from 0 to 500km for the following
beam curvature factor ke, and n

ATSC 201
Hwk 6
N10a)
Given:
Using the equations (and show your work) rather than a thermo diagram, what
is the potential temperature of air at: a) z(m): 200 T: 20
z(m)=
T(degrees C)
200 m
20 degrees C
0.2 km
Find:
Potential temperature of air
Assume no li

ATSC 201
S.Ch3
N10a, N11a, N14a, N15, N20a, N27c, U1
N10a).
Using equations rather than a thermo diagram, what is the potential
temperature of air at z = 200 (m), T = 20 deg. C?
Given:
z=
T(z) =
Find:
(z) =
Use eqn. (3.11), where
T_d =
(z) =
0.2 km
20 deg

ATSC 201
S.Ch10 (do all on spreadsheet): N12a, N14a, N15a, N18a.
S.Ch11 (do all on spreadsheet): N14a, N17a, N18a, N19a.
S.Ch14 (do all by hand on a paper copy of the blank hodograph): N18a, N23, N28, N30(1)
S. Ch10
N12a).
What is the geostrophic wind spe

ATSC 201
Chp.1
N7a)
Find the virtual temperature (C) for air of :
Given:
T(C)=
r(g/kg)=
20
10
Find:
Tv:= ? C
First, convert T and r to proper units
T=
r=
293.15 K
0.01 g/g
Use eq (1.21) to find Tv: where a=
0.61 gdry air/gwater vapor
Tv=
294.938215 K
21.7

ATSC 201
Hwk 4
Chapter 10
N12a)
What is the geostrophic wind speed at a height where density=0.7kg/m^3,
fc=10^-4/s, and the pressure gradient (kPa/100km) magnitude is: a) 0.1
Given:
Density=
fc=
delta P=
Delta x=
0.7 kg/m^3
0.0001 S^-1
0.1 kPa
100 km
Find

Atsc 201
Hwk 3
Chapter 2
N5g)
Given:
Find:
Plot the local solar elevation angle vs. local
time for 22 December, 23 March, and 22 june
for the following city: Montreal, Canada
Note: This is not a leap year.
Assume:
No daylight savings.
latitude=
45.5 deg N

ATSC 201
Hwk 8
Chapter 5
N5a) Repeat N4 but on copies of All 5 of the large thermo diagrams from the end of
this chapter.
Given:
Find:
P=
40 kPa
T=
degrees C
Td=
-20 degrees C
Plot air aparcel state on tephigram
Check: Units OK.
Discussion: The plot for t

ATSC 201
Hwk 9
Chapter 6
N2a) On a winter day, suppose your breath has T=30 degrees C with Td=28 degrees C,
and it mixes with the ambient air of temperature T=-10 and Td= -11 degrees C.
Will you see your breath? Assume you are at sea level, and that your

Interpretatino of Results
Now that the stability of the whole sounding has been identified in Fig 15, we can identify it
as the thunderstorm environment. This interpretation is written in Fig 16, where we have
also plotted the dew point temperatures that

ATSC 201
Prof. Stull
Fall 2010
Final Exam
(open book)
(100 points)
Name: _
Student Number: _
1. (2 points) For the clouds you observed outside at the start
of this exam, the dominant cloud type that you could see is _
. and the weather map symbol for the

TUTORIALS ON CLOUD IDENTIFICATION AND WEATHER SATELLITE IMAGE
INTERPRETATION
Look at clouds and classify them into stratiform, cumuliform, or special.
Look at normal clouds and identify/name them.
- Pg. 161-170 to see if stratiform, cumuliform or special,

ATSC 201
S.Ch13 (use spreadsheet for all):
N3a, N7a, N14a, N16a.
S.Ch17 (use a spreadsheet for all. For the last exercise, also use a paper copy of a thermo diagram):
N6a, N8a, N12a, N13a, N17a, N20a, N35a.
S.Ch13
N3a).
For latitude 40N and troposphere of

ATSC 201
Hwk #7
Chapter 4
N1a)
Given:
eo=
To=
Rv=
L=Lv=
Find:
Compare the saturation vapor pressure (with respect to liquid water) calculated
with the Clasius-Clapeyron equation and Tentens' formula, for T (degrees C):
a) 45
T=
45 degrees C
318.15 K
0.611

ATSC 201
Prof. Stull
Fall 2011
Midterm Exam
(open books, notes, calculator)
(50 points 1 minute/point)
Name: _
Student Number: _
1. (7 points) An air parcel at P = 85 kPa has temperature T =10C and dew-point Td = 5C. Plot this point
on the attached Skew-T