During which of the following times of the day is the 2 m air temperature usually the lowest at a tropical location?
Show Hint
- At sunrise
- At noon
- At sunset
- At midnight
The Correct Option is A
Solution and Explanation
- At noon, the temperature is generally the highest due to direct sunlight and the maximum heat absorption.
- At sunset, the temperature begins to decrease, but it is typically not as low as at sunrise.
- At midnight, temperatures can be lower than during the day, but they are not typically as low as at sunrise.
Thus, the correct answer is (A) At sunrise.
Top Questions on Atmospheric Science
In the figures given below, L and H indicate low and high pressure centers, respectively; PGF, CoF and CeF indicate Pressure Gradient Force, Coriolis Force and Centrifugal Force, respectively; \( V \) 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?
- GATE XE - 2025
- Atmospheric and Ocean Science
- Atmospheric Science
Which of the following is the correct form of the mass divergence form of the continuity equation for a compressible fluid? [In the given equations, \( \rho \) is the density and \( \nabla \) the three-dimensional velocity vector of the fluid.]
[(i)] $\displaystyle \frac{\partial \rho}{\partial t} + \nabla \times (\rho \mathbf{v}) = 0$
[(ii)] $\displaystyle \frac{\partial \rho}{\partial t} + \nabla \cdot (\rho \mathbf{v}) = 0$
[(iii)] $\displaystyle \frac{\partial \mathbf{v}}{\partial t} + \rho \cdot \nabla \mathbf{v} = 0$
[(iv)] $\displaystyle \frac{\partial \rho}{\partial t} + \mathbf{v} \cdot \nabla \rho = 0$- GATE XE - 2025
- Atmospheric and Ocean Science
- Atmospheric Science
- The solar constant for the Earth is 1368 W m\(^{-2}\). Consider the planet Jupiter whose mass is 320 times that of the Earth and distance from the Sun is 5.2 times that of the Earth. The solar constant for Jupiter is .......... W m\(^{-2}\). (Round off to the nearest integer.) [Assume the inverse square law for the solar radiation.]
- GATE XE - 2025
- Atmospheric and Ocean Science
- Atmospheric Science
- The sensible heat (SH) flux at the locations P and Q are SH\(_P\) and SH\(_Q\), respectively. The value of \( \frac{SH_P}{SH_Q} \) is .......... (in integer).
- GATE XE - 2025
- Atmospheric and Ocean Science
- Atmospheric Science
- One kg of dry air at 15°C is isothermally compressed to one tenth of its initial volume. The work done on the system is .......... kJ. (Round off to the nearest integer.) [Assume that the gas constant for dry air is \(287 \times 10^5 \, {J K}^{-1} \, {kg}^{-1}\).]
- GATE XE - 2025
- Atmospheric and Ocean Science
- Atmospheric Science
Questions Asked in GATE XE exam
- The north-Atlantic deep-water is associated with .........
- GATE XE - 2025
- Indian Ocean Current Systems
- The zonal gradient of meridional current and the meridional gradient of zonal current is \( -0.3 \times 10^{-3} \, {s}^{-1} \) and \( 0.3 \times 10^{-3} \, {s}^{-1} \), respectively, at a location P (87°E, 15°N). Which one of the following best explains the nature of the flow?
- GATE XE - 2025
- Indian Ocean Current Systems
The vertical (depth) profiles for three parameters P1, P2, and P3 in the northern Indian Ocean are given in the figure below. The values along the x-axis are the normalized values of the parameters and y-axis is the depth (m).
Identify the parameters P1, P2, and P3 from the options given below.
- GATE XE - 2025
- Indian Ocean Current Systems
The sea surface height concentric isolines (L1 and L2 in cm) and the distance between them (dx in 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?
- GATE XE - 2025
- Indian Ocean Current Systems
- Which of the following Period(s) correspond(s) to wind waves?
- GATE XE - 2025
- Indian Ocean Current Systems