METEO MIDTERM

Question 1

Used to measure the wind,
temperature, moisture, and
pressure in vertical levels.

Answer 1

Skew-T Diagram

Question 2

itis the processed output of
upper-air soundings.

Answer 2

Skew-T Diagram

Question 3

A weather balloon costs around

Answer 3

18k - 20k per launch

Question 4

The data processed by the skew-t
is from __________

Answer 4

the different upper air
stations of the Philippine
Atmospheric, Geophysical and
Astronomical Services
Administration (PAGASA).

Question 5

PAGASA has seven upper-air
stations situated at ____

Answer 5

Laoag, Baguio,
Tanay, Legaspi, Cebu, Puerto
Princesa and Davao.

Question 6

All stations are required to launch
a weather balloon ___ a day
during _____

Answer 6

2, (00Z and 12Z).

Question 7

Weather balloons, which are made of _________, are filled with ___ instead of helium to reach greater heights. This is done using water electrolysis.

Answer 7

latex or synthetic rubber (neoprene),,,,,, hydrogen

Question 8

The balloons, which start out
measuring about 6 ft. wide before
release, expand as they rise to about ___. in diameter.

Answer 8

20 ft

Question 9

An instrument called ____ is attached to the balloon to measure pressure,temperature and relative humidity as it ascends up into the atmosphere.

Answer 9

radiosonde

Question 10

Radiosondes and weather balloons are used to measure upper-air data. The ____ measures the weather parameters and transmits the data back to a server.

Answer 10

radiosonde

Question 11

The energy supports the creation of convection thatis vital in creating a thunderstorm which means the higher the ___ ,the higher the possibility to have a thunderstorm.

Answer 11

Convective Available Potential Energy (CAPE)

Question 12

the energy that inhibits the
process of convection which means the higher the _____,the lower the possibility to have a thunderstorm.

Answer 12

Convective Inhibition (CIN)

Question 13

its about the instability. The more negative the value of __, the higher the possibility to have a thunderstorm.

Answer 13

Lifted Index (LI)

Question 14

the two levels are important as it determine the intensity of the storm or the thunderstorm that will be form.

Answer 14

Mid-level (850 to 500 hpa) moisture and wind-shear

Question 15

it is the line of constant
pressure.

Answer 15

Isobars

Question 16

they nearly horizontal lines that
spaced logarithmically from
about 1050 hPa at the bottom
to 100 hPa at the top. They are
plotted every 50 hPa.

Answer 16

Isobars

Question 17

it is the line of constant
temperature.

Answer 17

Isotherms

Question 18

On the skew-T diagram,
these are straight, solid
lines, sloping from the lower left
to upper right.

Answer 18

Isotherms

Question 19

it is the line of constant
potential temperature.

Answer 19

Dry Adiabats

Question 20

On the skew-T diagram, these are the slightly-curved, solid lines sloping from the lower
right to upper left.

Answer 20

Dry Adiabats

Question 21

it indicate the rate of temperature change in a parcel of dry air rising or descending adiabatically, with no loss or gain of heat by the parcel

Answer 21

Dry Adiabats

Question 22

also known as moist adiabats or saturation pseudo-adiabats, represent lines of constant equivalent potential temperature.

Answer 22

Saturation Adiabats

Question 23

On the skew-T diagram, they are the slightly curved lines. It represent the rate of temperature change in a rising parcel of saturated air

Answer 23

Saturation Adiabats

Question 24

also known as humidity mixing ratio lines

Answer 24

Saturation Mixing Ratio

Question 25

On the skew-t diagram lines are the slightly-curved, dashed lines sloping from the lower left to upper right.

Answer 25

Saturation Mixing Ratio

Question 26

They are labeled at the bottom of the diagram for a range of 0.1 to 40.0 grams per kilogram

Answer 26

Saturation Mixing Ratio

Question 27

___ is the difference in wind speed and/or direction between two identified levels.

Answer 27

Wind Shear

Question 28

____ wind shears will support convection.

Answer 28

Weak

Question 29

Strong wind shears will ____ convection

Answer 29

inhibit, hinder

Question 30

is the ratio of the mass of water vapor (Mv) to the mass of dry air (Md) in a parcel of air at saturation.

Answer 30

saturation mixing ratio (ws)

Question 31

It is the maximum amount of water vapor that a parcel can hold without condensation.

Answer 31

SATURATION MIXING RATIO (Ws)

Question 32

formula of SATURATION MIXING RATIO (Ws) and the mixing ratio (w)

Answer 32

ws or w = Mv / Md

Question 33

is the ratio of the mass of water vapor (Mv) to the mass of dry air (Md)

Answer 33

the mixing ratio (w)

Question 34

it measures the actual amount of water vapor present

Answer 34

the mixing ratio (w)

Question 35

_____ is the ratio of the amount of water vapor in a given volume of air to the amount that volume would hold if the air were saturated.

Answer 35

Relative humidity (RH)

Question 36

formula of RH

Answer 36

RH = 100* (W/Ws

Question 37

Saturated conditions have a DD of ____

Answer 37

zero

Question 38

_____ have a large DD.

Answer 38

dry condition

Question 39

____ is the height at which a parcel of air becomes saturated when it is lifted dry adiabatically.

Answer 39

lifting condensation level (LCL)

Question 40

Height to which a parcel of air, if heated sufficiently from below, will rise adiabatically until it is just saturated.

Answer 40

CONVECTIVE CONDENSATION LEVEL (CCL)

Question 41

This is the cloud base.

Answer 41

CONVECTIVE CONDENSATION LEVEL (CCL)

Question 42

Height at which a parcel of air, when lifted, becomes warmer than its surroundings.

Answer 42

LEVEL OF FREE CONVECTION (LFC)

Question 43

The parcel is lifted dry adiabatically until saturate and then moist-adiabatically thereafter

Answer 43

LEVEL OF FREE CONVECTION (LFC)

Question 44

Height where the temperature of a buoyantly rising parcel again equals the temperature of the environment.

Answer 44

EQUILIBRIUM LEVEL (EL)

Question 45

Can be identified either through the use of LCL or CCL.

Answer 45

EQUILIBRIUM LEVEL (EL)

Question 46

This is referred as the cloud top.

Answer 46

EQUILIBRIUM LEVEL (EL)

Question 47

Amount of buoyant energy available as the parcel is accelerated upward.

Answer 47

CONVECTIVE AVAILABLE POTENTIAL ENERGY

Question 48

CAPE value 0 means

Answer 48

Stable

Question 49

what is the stability of CAPE value 0 - 1000

Answer 49

Marginally Unstable

Question 50

what is the stability of CAPE value 1000 - 2500

Answer 50

Moderately Unstable

Question 51

what is the stability of CAPE value 2500 0 3500

Answer 51

Very Unstable

Question 52

what is the stability of CAPE value 3500 or greater

Answer 52

Extremely Unstable

Question 53

Amount of energy required to lift the parcel to the LFC

Answer 53

CONVECTIVE INHIBITION (CIN)

Question 54

The larger the____ the higher the CIN value, and the lower the likelihood of convective storms

Answer 54

negative area,

Question 55

difference between the observed temperature at 500 hPa and the temperature of an air parcel lifted to 500 hPa from near the surface.

Answer 55

LIFTED INDEX (LI)

Question 56

The lower the value of LI, the _____

Answer 56

higher the possibility of thunderstorms.

Question 57

LI VALUE; -2, WHAT IS THE SEVERE WEATHER POTENTIAL

Answer 57

WEAK

Question 58

LI VALUE; - 3 to -5, WHAT IS THE SEVERE WEATHER POTENTIAL

Answer 58

MODERATE

Question 59

LI VALUE; -6 OR LESS, WHAT IS THE SEVERE WEATHER POTENTIAL

Answer 59

STRONG

Question 60

Using a certain programming language (Python), one can automatically compute the parameters to create an early warning system (EWS) that can provide automated risk analysis at a specific area of interest.

Answer 60

FORECASTING

Question 61

in launching weather ballon how many are launched for normal condition and extreme condition per day

Answer 61

normal condition: 2x a day extreme condition: hourly

Question 62

measures the amount of water vapor that would be present at saturation.

Answer 62

saturation mixing ratio