GATE Overflow for GATE XE - Recent activity in Atmospheric and Oceanic Sciences

Edited: GATE XE 2026 | Question: 177

Thu, 02 Apr 2026 11:11:36 +0000

Which one of the following defines the angle made by the line joining the centers of the sun and the earth with its projection on the equatorial plane?

Declination
Latitude
Azimuth angle
Zenith angle

Edited: GATE XE 2026 | Question: 170

Thu, 02 Apr 2026 11:01:52 +0000

Which of the following is/are greenhouse gas(es), as identified by the Intergovernmental Panel on Climate Change $\text{(IPCC)}$?

Nitrogen dioxide ( $\mathrm{NO}_{2}$)
Nitrous oxide $\left(\mathrm{N}_{2} \mathrm{O}\right)$
Sulphur hexafluoride ($\mathrm{SF}_{6}$)
Carbon monoxide $\text{(CO)}$

Edited: GATE XE 2026 | Question: 163

Thu, 02 Apr 2026 10:53:44 +0000

In a free atmosphere without friction, if the pressure increases by one kilo Pascal eastward across a distance of $200$ $\mathrm{km}$, the magnitude of geostrophic flow (in $m s^{-1}$ ) is $\_\_\_\_$. (rounded off to two decimal places)

[Density of air is $1.029 \mathrm{~kg} \mathrm{~m}^{-3}$ and the Coriolis parameter is $10^{-4} \mathrm{~s}^{-1}$.]

Edited: GATE XE 2026 | Question: 162

Thu, 02 Apr 2026 10:50:50 +0000

A steady westerly wind is blowing over the ocean surface at a latitude of $30^{\circ} \mathrm{N}$ and exerting a wind stress of $0.8 \mathrm{~N} \mathrm{~m}^{-2}$.

The magnitude of net volume transport (in $m^{2} s^{-1}$) per unit width is $\_\_\_\_$. (rounded off to three decimal places)

[Density of seawater is $1025 \mathrm{~kg} \mathrm{~m}^{-3}$, angular velocity of the Earth is $\left.7.29 \times 10^{-5} s^{-1}.\right]$

Edited: GATE XE 2026 | Question: 160

Thu, 02 Apr 2026 10:46:02 +0000

The temperature of a dry air parcel is $20^{\circ} \mathrm{C}$ at a height of $150$ $\mathrm{m}$ with atmospheric pressure of $1000$ $\mathrm{hPa}$. If the air parcel rises adiabatically to a height of $2$ $\mathrm{km}$ where atmospheric pressure is $800$ $\mathrm{hPa}$, then the temperature (in ${ }^{\circ} \mathrm{C}$ ) of the air parcel at that height will be $\_\_\_\_$. (rounded off to three decimal places)

[Gas constant and specific heat capacity for the dry air are $287 \mathrm{~J} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$ and $1004 \mathrm{~J} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$, respectively.]

Edited: GATE XE 2026 | Question: 159

Thu, 02 Apr 2026 10:41:44 +0000

Which of the following statements is/are correct for the Equatorial Indian Ocean during a positive Indian Ocean Dipole event?

Strong surface westerly winds
Weak surface westerly winds
Positive Sea Surface Temperature anomaly in the western region
Negative Sea Surface Temperature anomaly in the western region

Edited: GATE XE 2026 | Question: 157

Thu, 02 Apr 2026 10:39:34 +0000

Which of the following is/are generally associated within a cyclonic eddy in the northern Indian Ocean?

Upwelling
Positive sea level anomaly
Negative sea level anomaly
Downwelling

Edited: GATE XE 2026 | Question: 156

Thu, 02 Apr 2026 10:39:17 +0000

The given figure illustrates a subtropical gyre in the Southern Indian Ocean. Identify the currents in the correct sequence of $\mathrm{P}, \mathrm{Q}, \mathrm{R}$ and $\mathrm{S}$, respectively from the following options.

South Equatorial Current, West Australian Current, Madagascar Current and South Indian Ocean Current
South Equatorial Current, Madagascar Current, West Australian Current and South Indian Ocean Current
South Equatorial Current, Madagascar Current, South Indian Ocean Current and West Australian Current
South Equatorial Current, South Indian Ocean Current, Madagascar Current and West Australian Current

Edited: GATE XE 2026 | Question: 155

Thu, 02 Apr 2026 10:37:10 +0000

From the given cases ( $\mathrm{P}, \mathrm{Q}, \mathrm{R}$ and $\mathrm{S}$), which represents the annual mean profile of dissolved oxygen in the Bay of Bengal?

$\mathrm{P}$
$\mathrm{Q}$
$\mathrm{R}$
$\mathrm{S}$

Edited: GATE XE 2026 | Question: 148

Thu, 02 Apr 2026 10:18:20 +0000

Which of the following statements based on the given figure is / are TRUE with respect to the upwelling process in the ocean?

Wind is northerly.
Wind is southerly.
Event occurs in the southern hemisphere.
Event occurs in the northern hemisphere.

Edited: GATE XE 2026 | Question: 147

Thu, 02 Apr 2026 10:18:05 +0000

Which of the following weather systems has the shortest duration of lifecycle?

Tropical Cyclones
Thunderstorms
Western Disturbance
Winter Monsoon

Edited: GATE XE 2026 | Question: 145

Thu, 02 Apr 2026 10:14:13 +0000

Which of the following options are parts of the atmospheric boundary layer?

Benthic boundary layer, Internal boundary layer
Mixed layer, Entrainment layer
Mixed layer, Internal boundary layer
Mixed layer, Benthic boundary layer

Edited: GATE XE 2026 | Question: 144

Thu, 02 Apr 2026 10:07:14 +0000

Which of the following is TRUE for the 'Summer solistice' in the Northern Hemisphere?

Longest night of the year
Equal duration of daylight and night
Longest duration of daylight of the year
Shortest duration of daylight of the year

Edited: GATE XE 2025 | Question: 160

Mon, 30 Jun 2025 18:20:08 +0000

Which of the following Period(s) correspond(s) to wind waves?

$5$ seconds
$20$ seconds
$6$ hours
$12$ hours

Edited: GATE XE 2025 | Question: 159

Mon, 30 Jun 2025 18:19:20 +0000

The time period of the inertial oscillation at a location $\textsf{R}$ is $1.5$ times that of a particle moving at a speed of $0.5 \mathrm{~m} \mathrm{~s}^{-1}$ at a location $\mathrm{S}\left(87^{\circ} \mathrm{E}, 45^{\circ} \mathrm{S}\right)$. Which of the following is the latitude of location $\textsf{R}$? (Round off to the nearest integer)

$45 \: ^{\circ} \mathrm{N}$
$67 \: ^{\circ} \mathrm{S}$
$28 \: ^{\circ} \mathrm{N}$
$50 \: ^{\circ} \mathrm{S}$

Edited: GATE XE 2025 | Question: 158

Mon, 30 Jun 2025 18:17:38 +0000

The directions of the South Pacific Subtropical Gyre and the North Atlantic Subtropical Gyre are $\_\_\_\_\_$ and $\_\_\_\_\_$, respectively.

clockwise; counter-clockwise
counter-clockwise; clockwise
clockwise; clockwise
counter-clockwise; counter-clockwise

Edited: GATE XE 2025 | Question: 157

Mon, 30 Jun 2025 18:16:11 +0000

Which one of the following is the main cause of the land-sea temperature contrast that drives phenomena like sea breeze and the Indian summer monsoon?

Difference in the cloud cover between the land and the sea.
Difference in the albedo between the land and the sea.
Difference in the specific heat capacities between the land and the sea.
Difference in the surface roughness between the land and the sea.

Edited: GATE XE 2025 | Question: 156

Mon, 30 Jun 2025 18:15:28 +0000

Which one of the following is the main reason why tropical cyclones rarely form over the Bay of Bengal during the summer monsoon season?

Strong vertical wind shear.
Weak low-level relative vorticity.
Dry mid-troposphere.
Stable atmosphere.

Edited: GATE XE 2025 | Question: 155

Mon, 30 Jun 2025 18:14:41 +0000

At which of the following locations in the atmosphere is the anvil of a towering cumulonimbus cloud usually located?

Top of the surface layer
Top of the boundary layer
Tropopause
Stratopause

Edited: GATE XE 2025 | Question: 154

Mon, 30 Jun 2025 18:13:25 +0000

During which of the following times of the day is the $2 \: \mathrm{m}$ air temperature usually the lowest at a tropical location?

At sunrise
At noon
At sunset
At midnight

Edited: GATE XE 2025 | Question: 175

Mon, 30 Jun 2025 16:34:15 +0000

The Sea Surface Temperature, Air Temperature and $10 \: m$ Wind Speed at the locations $\textsf{P}$ and $\textsf{Q}$ are given in the table below.

[Assume the density of air, specific heat capacity, and sensible heat transfer constant are the same at both locations.]

$$\begin{array}{|c|c|c|c|} \hline \textbf{Location} & \textbf{Sea Surface} & \textbf{Air Temperature} & \textbf{Wind Speed} \\ & \textbf{temperature} \left({ }^{\circ} \mathrm{C}\right) & \left({ }^{\circ} \mathrm{C}\right) & \textbf{at 10m} \: \left(\mathbf{m ~ s}^{\mathbf{- 1}}\right) \\ \hline \textsf{P} & 28 & 35 & 4 \\
\hline \textsf{Q} & 30 & 32 & 7 \\ \hline \end{array}$$

The sensible heat $\textsf{(SH)}$ flux at the locations $\textsf{P}$ and $\textsf{Q}$ are $\mathrm{SH}_{P}$ and $\mathrm{SH}_{\mathrm{Q}}$, respectively. The value of $\left(\frac{\mathrm{SH}_{\mathrm{P}}}{\mathrm{SH}_{\mathrm{Q}}}\right)$ is $\_\_\_\_\_\_\_$. (in integer)

Edited: GATE XE 2025 | Question: 174

Mon, 30 Jun 2025 16:29:41 +0000

A column of air mass extending from surface to a height of $10 \:\mathrm{km}$ moving eastward along $30^{\circ} \: \mathrm{N}$ strikes a north-south oriented mountain range. While crossing the mountain range, the air mass acquires a relative vorticity of $-3.65 \times 10^{-5} \mathrm{~s}^{-1}$ at the top. If the air mass maintains the same latitude and conserves potential vorticity, the height of the mountain range is $\_\_\_\_\_\_\_$ km . (Round off to the nearest integer.)

[Assume the angular velocity of the Earth is $7.3 \times 10^{-5} \mathrm{~s}^{-1}$ and initial relative vorticity is zero.]

Edited: GATE XE 2025 | Question: 169

Mon, 30 Jun 2025 16:25:37 +0000

In the figures given below, $\mathbf{L}$ and $\mathbf{H}$ indicate low and high pressure centers, respectively; $\mathbf{PGF}$, $\mathbf{CoF}$ and $\mathbf{CeF}$ indicate Pressure Gradient Force, Coriolis Force and Centrifugal Force, respectively; $\mathbf{V}$ is Velocity.

[The arrows indicate only the directions but not the magnitudes of the forces and velocity.]

Which of the following is/are the correct representation(s) of the directions of various forces and velocity in the gradient wind balance in the northern hemisphere?

$textsf{(i)}$
$\textsf{(ii)}$
$\textsf{(iii)}$
$\textsf{(iv)}$

Edited: GATE XE 2025 | Question: 167

Mon, 30 Jun 2025 16:22:15 +0000

The north-Atlantic deep-water is associated with $\_\_\_\_\_\_\_$

low temperature and low salinity
high temperature and high salinity
high temperature and low salinity
low temperature and high salinity

Edited: GATE XE 2025 | Question: 166

Mon, 30 Jun 2025 16:21:43 +0000

The zonal gradient of meridional current and the meridional gradient of zonal current is $-0.3 \times 10^{-3} \mathrm{~s}^{-1}$ and $0.3 \times 10^{-3} \mathrm{~s}^{-1}$, respectively, at a location $\mathrm{P}\left(87^{\circ} \mathrm{E}\right.$, $\left.15^{\circ} \mathrm{N}\right)$. Which one of the following best explains the nature of the flow?

The flow is non-divergent in nature.
The flow is non-rotational in nature.
The flow is counter-clockwise in nature.
The flow is clockwise in nature.

Edited: GATE XE 2025 | Question: 165

Mon, 30 Jun 2025 16:20:52 +0000

The vertical (depth) profiles for three parameters $\mathbf{P1}$, $\mathbf{P2}$, and $\mathbf{P3}$ in the northern Indian Ocean are given in the figure below. The values along the $\text{x}$-axis are the normalized values of the parameters and $\text{y}$-axis is the depth ($\text{m}$).

Identify the parameters $\mathbf{P1}$, $\mathbf{P2}$, and $\mathbf{P3}$ from the options given below.

$\mathbf{P1}$: Dissolved Oxygen; $\mathbf{P2}$: Nitrate; $\mathbf{P3}$: Chlorophyll
$\mathbf{P1}$: Nitrate; $\mathbf{P2}$: Chlorophyll; $\mathbf{P3}$: Dissolved Oxygen
$\mathbf{P1}$: Dissolved Oxygen; $\mathbf{P2}$: Chlorophyll; $\mathbf{P3}$: Nitrate
$\mathbf{P1}$: Chlorophyll; $\mathbf{P2}$: Nitrate; $\mathbf{P3}$: Dissolved Oxygen

Edited: GATE XE 2025 | Question: 164

Mon, 30 Jun 2025 16:19:34 +0000

The sea surface height concentric isolines ($\mathbf{L1}$ and $\mathbf{L2}$ in $\mathrm{cm}$ ) and the distance between them ( $\mathbf{d} \mathbf{x}$ in $\mathrm{km}$ ) for three different eddies at the same latitude are given in the figure below. (The figures are not to scale.)

Which one of the following orders is correct about the magnitudes of the geostrophic currents within the isolines?

$\textbf{(i) > (ii) > (iii)}$
$\textbf{(ii) >(iii) >(i)}$
$\textbf{(iii) >(i) >(ii)}$
$\textbf{(iii) > (ii) >(i)}$

Edited: GATE XE 2025 | Question: 163

Mon, 30 Jun 2025 16:17:38 +0000

A rotating weather system has a tangential velocity of $100 \mathrm{~m} \mathrm{~s}^{-1}$, diameter of $1 \: \mathrm{ km}$ , and located at a latitude where the Coriolis parameter is $10^{-4} \mathrm{~s}^{-1}$. Which one of the following statements is true about this weather system?

It is in geostrophic balance.
It is in gradient wind balance.
It is a high-pressure system.
It is in cyclostrophic balance.

Edited: GATE XE 2025 | Question: 162

Mon, 30 Jun 2025 16:14:55 +0000

Acceleration due to Coriolis force of a water parcel at a location $\mathrm{P}\left(67^{\circ} \mathrm{E}, 20^{\circ} \mathrm{N}\right)$ moving with a speed of $0.35 \mathrm{~m} \mathrm{~s}^{-1}$ is $\_\_\_\_\_\_\_$ $\times 10^{-5} \mathrm{~m} \mathrm{~s}^{-2}$. (Round off to two decimal places)

[Assume the angular velocity of the Earth is $7.3 \times 10^{-5} \mathrm{~s}^{-1}$].

Recategorized: GATE XE 2023 | Question: 144

Mon, 05 May 2025 12:14:49 +0000

\begin{tabular}{l|l}
Q.154 & The net water level elevation near the coast arising due to a tropical-cyclone- \\
induced storm is a combination of the following factors \\

& astronomical tides, and distant cyclonic storm \\
\hline
& wind-induced waves, astronomical tides, and distant cyclonic storm \\
\hline
& astronomical tides, coastal currents, and distant cyclonic storm \\
\hline
& riverine flow, astronomical tides, and distant cyclonic storm \\
\hline
\end{tabular}

Recategorized: GATE XE 2023 | Question: 145

Mon, 05 May 2025 12:14:47 +0000

\begin{tabular}{l|l}
Q. 155 & \begin{tabular}{l}
The typical speeds of a tsunami wave in water depths of $10 \mathrm{~m}, 100 \mathrm{~m}$, and 1000 \\
$\mathrm{~m}$, respectively, are
\end{tabular} \\

& approximately $100 \mathrm{~m} \mathrm{~s}^{-1}, 31 \mathrm{~m} \mathrm{~s}^{-1}$ and $10 \mathrm{~m} \mathrm{~s}^{-1}$ \\
\hline
& approximately $50 \mathrm{~m} \mathrm{~s}^{-1}, 75 \mathrm{~m} \mathrm{~s}^{-1}$ and $100 \mathrm{~m} \mathrm{~s}^{-1}$ \\
& approximately $10 \mathrm{~m} \mathrm{~s}^{-1}, 31 \mathrm{~m} \mathrm{~s}^{-1}$ and $100 \mathrm{~m} \mathrm{~s}^{-1}$ \\
& approximately $100 \mathrm{~m} \mathrm{~s}^{-1}, 10 \mathrm{~m} \mathrm{~s}^{-1}$ and $31 \mathrm{~m} \mathrm{~s}^{-1}$
\end{tabular}

Recategorized: GATE XE 2023 | Question: 146

Mon, 05 May 2025 12:14:44 +0000

\begin{tabular}{|l|l}
Q.156 & Which classification of tides best represents the west coast of India? \\
\hline

& Diurnal and Mixed \\
\hline
& Semidiurnal and Mixed \\
\hline
& only Diurnal \\
\hline
& only Mixed
\end{tabular}

Recategorized: GATE XE 2023 | Question: 147

Mon, 05 May 2025 12:14:41 +0000

\begin{tabular}{|c|c|}
\hline Q. 157 & \begin{tabular}{l}
The variation in geostrophic winds with height, in particular, at the atmospheric \\
boundary layer, considering the variation in pressure gradient as a function of \\
height, is referred to as
\end{tabular} \\
\hline

& Isallobaric winds \\
\hline
& Gradient winds \\
\hline
& Thermal winds \\
\hline
& Cyclostrophic winds \\
\hline
\end{tabular}

Recategorized: GATE XE 2023 | Question: 148

Mon, 05 May 2025 12:14:38 +0000

\begin{tabular}{|c|c|}
\hline Q. 158 & \begin{tabular}{l}
Consider the following options and pick out the right choice. The solubility of a \\
gas in sea water increases with
\end{tabular} \\
\hline

& the increase of temperature, salinity and pressure \\
\hline
& the decrease of temperature, salinity and pressure \\
\hline
& the increase of temperature, and the decrease of salinity and pressure \\
\hline
& the decrease of temperature and salinity, and the increase of pressure \\
\hline
\end{tabular}

Recategorized: GATE XE 2023 | Question: 149

Mon, 05 May 2025 12:14:36 +0000

\begin{tabular}{l|l|}
Q.159 & From the list given below, identify the organism type in the biological pump that \\
takes up carbon dioxide from the atmosphere into the ocean. \\
\hline

& Zooplankton \\
\hline
& Fish \\
\hline
& Phytoplankton \\
\hline
& Radiolarians
\end{tabular}

Recategorized: GATE XE 2023 | Question: 150

Mon, 05 May 2025 12:14:33 +0000

\begin{tabular}{|l|l}
Q.160 & \begin{tabular}{l}
The amount of $\mathrm{CO}_{2}$ that can be absorbed \\
seawater decreases.
\end{tabular} \\
\hline

& Remains the same the temperature of \\
\hline
& Increases \\
\hline
& Decreases \\
\hline
& Can either increase or decrease
\end{tabular}

Recategorized: GATE XE 2023 | Question: 151

Mon, 05 May 2025 12:14:30 +0000

\begin{tabular}{|c|c|}
\hline Q. 161 & Which among the following gases has the highest global warming potential? \\
\hline

& $\mathrm{CO}_{2}$ \\
\hline
& Water vapor \\
\hline
& Methane \\
\hline
& $\mathrm{N}_{2} \mathrm{O}$ \\
\hline
\end{tabular}

Recategorized: GATE XE 2023 | Question: 152

Mon, 05 May 2025 12:14:27 +0000

\begin{tabular}{l|l}
Q.162 & \begin{tabular}{l}
What will happen to the speed of a balanced flow as one moves across the isobar \\
along a particular latitude?
\end{tabular} \\

& \begin{tabular}{l}
The speed changes for a geostrophic flow and remains constant for a cyclostrophic \\
flow
\end{tabular} \\
& \begin{tabular}{l}
The speed remains constant for a geostrophic flow and changes for a cyclostrophic \\
flow
\end{tabular} \\
& The speed remains constant for both (geostrophic and cyclostrophic) types of flow \\
& The speed changes for both (geostrophic and cyclostrophic) types of flow
\end{tabular}

Recategorized: GATE XE 2023 | Question: 153

Mon, 05 May 2025 12:14:24 +0000

\begin{tabular}{|c|c|}
\hline Q. 163 & \begin{tabular}{l}
The following illustration depicts the circulation pattern in the North Indian Ocean \\
during the southwest (June-August) monsoon. Identify the markers numbered \\
from $1-5$ in the illustration and pick out the right choice.
\end{tabular} \\
\hline & 20N \\
\hline

& \begin{tabular}{l}
1. Great Whirl, 2. East India Coastal Current, 3. Fast African Coastal Current, 4. \\
Summer (Southwest) Monsoon Current, and 5. West India Coastal Current.
\end{tabular} \\
\hline
& \begin{tabular}{l}
1. East $\Lambda$ frican Coastal Current, 2. Summer (Southwest) Monsoon Current, 3. \\
Great Whirl, 4. South Equatorial Counter Current, and 5. East India Coastal \\
Current.
\end{tabular} \\
\hline
& \begin{tabular}{l}
1. Great Whirl, 2. Summer (Southwest) Monsoon Current, 3. West India Coastal \\
Current, 4. Somali Current, and 5. East India Coastal Current.
\end{tabular} \\
\hline
& \begin{tabular}{l}
1. East African Coastal Current, 2. West India Coastal Current, 3. Somali Current, \\
4. East India Coastal Current, and 5. South Equatorial Counter Current.
\end{tabular} \\
\hline
\end{tabular}

Recategorized: GATE XE 2023 | Question: 154

Mon, 05 May 2025 12:14:21 +0000

\begin{tabular}{|c|c|}
\hline Q. 164 & \begin{tabular}{l}
From the following list identify the region that has low chlorophyll and low \\
nutrients.
\end{tabular} \\
\hline

& Upwelling, anticyclonic eddy \\
\hline
& Upwelling, cyclonic eddy \\
\hline
& Downwelling, anticyclonic eddy \\
\hline
& Downwelling, cyclonic eddy \\
\hline
\end{tabular}

Recategorized: GATE XE 2023 | Question: 155

Mon, 05 May 2025 12:14:18 +0000

\begin{tabular}{|c|c|c|}
\hline \multirow[t]{6}{*}{ Q. 165} & \multicolumn{2}{|c|}{\begin{tabular}{l}
Match the following physical phenomena from the perspective of monsoonal \\
circulation:
\end{tabular}} \\
\hline & Column-1 & Column-2 \\
\hline & \begin{tabular}{l}
a) Reversal of East-West temperature \\
gradient with seasons
\end{tabular} & i) Over the tropics \\
\hline & \begin{tabular}{l}
b) Reversal of North-South \\
temperature gradient with seasons
\end{tabular} & ii) Indian Ocean \\
\hline & \begin{tabular}{l}
c) Surface cooling and deepening of \\
mixed layer
\end{tabular} & iii) Over mid-latitudes \\
\hline & \begin{tabular}{l}
d) Northward movement of south \\
equatorial current
\end{tabular} & iv) Arabian Sea \\
\hline

& a-i, b-iii, c-ii, d-iv & \\
\hline
& a-iii, b-i, c-iv, d-ii & \\
\hline
& a-iii, b-ii, c-iv, d-i & \\
\hline
& a-ii, b-i, c-ii, d-iv & \\
\hline
\end{tabular}

Recategorized: GATE XE 2023 | Question: 156

Mon, 05 May 2025 12:14:15 +0000

\begin{tabular}{l|l|}
Q.166 & Choose the correct statement(s) in context to Ekman spiral from the following: \\
\hline

& The balance of Coriolis force and pressure \\
\hline
& The balance of Coriolis force, wind shear, and frictional force \\
\hline
& \begin{tabular}{l}
Deflection of surface current to the right of the wind direction in the Northern \\
hemisphere
\end{tabular} \\
\hline
& The increase of current velocity with depth \\
\hline
\end{tabular}

Recategorized: GATE XE 2023 | Question: 157

Mon, 05 May 2025 12:14:12 +0000

\begin{tabular}{|l|l|}
\hline Q.167 & Which of the following is/are associated with winter rainfall over India? \\
\hline

& Northeast monsoon \\
\hline
& Southwest monsoon \\
\hline
& Western disturbances \\
\hline
& Agulhas Current
\end{tabular}

Recategorized: GATE XE 2023 | Question: 158

Mon, 05 May 2025 12:14:09 +0000

\begin{tabular}{l|l}
Q. 168 & If the global albedo is increased from 0.3 to 0.4 , the global radiative equilibrium \\
temperature (in $\mathrm{K}$ ) would decrease by \\
(consider no greenhouse effect, solar constant $=1360 \mathrm{~W} \mathrm{~m}{ }^{-2}$ and Stefan- \\
Boltzmann constant $=5.67 \times 10^{-8} \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-4}$, rounded off to one decimal place).
\end{tabular}

Recategorized: GATE XE 2023 | Question: 159

Mon, 05 May 2025 12:14:04 +0000

Q. 169 When a parcel of dry air rises at a rate of $2 \mathrm{~cm} \mathrm{~s}^{-1}$ vertically, what should be the rate of heating per unit mass in $\mathrm{J} \mathrm{s}^{-1} \mathrm{~kg}^{-1}$ (due to the radiation, conduction, etc.) in order to maintain the air parcel at a constant temperature?
(consider the acceleration due to gravity as $9.8 \mathrm{~m} \mathrm{~s}^{-2}$, rounded off to three decimal places).

Recategorized: GATE XE 2023 | Question: 161

Mon, 05 May 2025 12:13:59 +0000

Q. 171 A parcel of dry air having an initial temperature of $30^{\circ} \mathrm{C}$ at $1000 \mathrm{hPa}$ level is lifted adiabatically. At what pressure (in $\mathrm{hPa}$ ) its density reduces by half?
(consider the ratio of the specific heat of dry air at a constant pressure to the specific heat of dry air at a constant volume, $\mathrm{C}_{\mathrm{p}} / \mathrm{C}_{\mathrm{v}}=0.71$, rounded off to two decimal places).

Recategorized: GATE XE 2023 | Question: 164

Mon, 05 May 2025 12:13:50 +0000

\begin{tabular}{|c|c|}
\hline Q. 174 & \begin{tabular}{l}
Consider the two parallel isobars separated by a spacing of $250 \mathrm{~km}$ at $30^{\circ} \mathrm{N}$ \\
(air density $=0.70 \mathrm{~kg} \mathrm{~m}^{-3}, 2 \Omega=14.6 \times 10^{-5} \mathrm{rad} \mathrm{s}^{-1}$ ) with a pressure gradient of 5 \\
$\mathrm{hPa}$. Calculate the geostrophic velocity in $\mathrm{m} \mathrm{s}^{-1}$ (rounded off to two decimal \\
places).
\end{tabular} \\
\hline
\end{tabular}

Recategorized: GATE XE 2024 | Question: 144

Mon, 05 May 2025 10:52:47 +0000

A westerly wind is blowing in the Northern Hemisphere. What is the direction of net mass transport in the Ekman layer?

Southward
Northward
North-Eastward
South-Westward

Recategorized: GATE XE 2024 | Question: 145

Mon, 05 May 2025 10:52:41 +0000

Which one of the following feature is NOT necessary for the formation of Indian summer monsoon?

Land-sea temperature contrast
El Niño
Seasonal reversal of winds
Meridional pressure gradient

Recategorized: GATE XE 2024 | Question: 146

Mon, 05 May 2025 10:52:36 +0000

The work done by Coriolis force is

directly proportional to velocity
a function of latitude
zero
always positive except at the equator