Questions tagged [rainfall]

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2
votes
2answers
3k views

Does the amount of rainfall relate to temperatures of a place?

Does the amount of rainfall relate to temperatures of a place? Is the amount of rainfall related to the maximum mean temperature of a place?
3
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0answers
139 views

Desert greening - Do we have long term (several decades) data on precipitation around the Sahara?

This article of desert greening states that some areas around the Sahara have seen increased plant growth in recent decades, caused by global warming. The causal chain would be warmer air can hold ...
5
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2answers
14k views

How much time does water takes to reach to the ground?

I want to understand the phenomena where water droplets after precipitation reaches to the ground. How much time does it take to become ground water or in other words how much time is taken by water ...
2
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1answer
157 views

Reason for rotting smell after first rain of the season?

Last day we had first rain after 3-4 months of hot&dry weather, and within 3-4 minutes a rotting smell came from nowhere. Due this smell I had running nose for a day. What might be the reason for ...
1
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1answer
114 views

When GCMs are calibrated do they use 'corrected rainfall' input?

Part of calibrating Global Climatic Models involves 'hindcasts' or 'history matching' against historic climate records, including rainfall. Such rainfall records are all in error because almost all ...
6
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1answer
564 views

The sun sometimes appears pure white after rainfall, how can this be explained?

I've noticed on multiple occasions, that after heavy rainfall, the sun appears a pure glistening white, even if it's already standing low in the sky. I can't discount psycho-visual effects as an ...
6
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1answer
89 views

Is there a method to determine the point rainfall intensity for small catchments?

I need to design a weir for a small earth dam in an arid area with a small (smaller than 200 ha), fairly flat catchment area in southern Africa. The idea behind the dam is to collect not more than 10 ...
9
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1answer
851 views

Can earthquakes affect the atmosphere?

Recently an earthquake of magnitude 6.9 shook the northeastern region of India, where I live. After the earthquake, the climate has changed dramatically resulting in excessive hail showers, ...
5
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2answers
126 views

How to determine constant $C$ in $p(x) = Cx^{-D}$?

Given a distribution obeying the power-law (fractal) relation, such as the cumulative distribution function $L_{cf}(> X) = CR^{-D}$, if $X$ is given, how does one find the constant $C$ from a given ...
3
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1answer
232 views

Extreme rainfall events

Extreme rainfall events have different intensities at different places depending on the availability of water to precipitate. Can anyone explain how do we define/determine extreme rainfall events in a ...
1
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1answer
341 views

How can we predict if it's raining, drizzling or there is snow fall by using precipitation intensity (inches/hour)?

I was analyzing a dataset in which precipitation intensity(inches/hr) and the type of precipitation was given. For example: ...
2
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0answers
137 views

Correlation of El Nino and south indian monsoon

A recent article in New Scientist reports the following claim made by Wenju Cai at CSIRO Melbourne. Southern India is having a lot of rain as it goes into winter, having come out of the dry ...
4
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1answer
111 views

How effective is seeding rainclouds? What are the indications for initiating seeding?

I've heard that dry ice, iodides have been used as seeding agents to induce rainfall. Is this technique really being used widely? What are the prerequisites for initiating seeding? Is it as bounteous ...
5
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1answer
255 views

Why is Venezuela so dry?

I'm trying to understand why the summer (January) precipitations in Venezuela are so low in the central and southern parts of the country as well as in eastern Colombia. The most plausible explanation ...
8
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2answers
1k views

How accurate is a tipping-bucket rain gauge?

My question is simple - how accurate is a tipping-bucket rain gauge? I have read about what causes the errors (wind, bucket mechanics for extreme events, ...) and I know the accuracy is strictly ...
8
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2answers
193 views

How can there be a hot summer with rain and no thunderstorms and lightning?

This summer in the south of France we have had two hot months with 29 days over 30'C, while the average maximum is 26'C in July. Normally there are violent storms with lightening up to 20 times a ...
4
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1answer
99 views

Could a waterfall lashing onto a road lead to a landslide?

Here is a video of a waterfall lashing on to a mountain road, with vehicles driving under it. https://youtu.be/cHaguj--YBc There appears to be a big hole carved out right next to the road, possibly ...
10
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1answer
1k views

How does evapotranspiration affect rainfall?

Evapotranspiration is when a plant evaporates water off the surface of its leaves in order to move water throughout its system with cohesive and adheisiveforces. My question is how will a sudden ...
21
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2answers
4k views

Is there an upper bound to the amount of rain that can fall in an hour?

The record for most rainfall in a single hour is 12 inches (30.5 cm), set in Holt, Missouri, in 1947. What is the maximum amount of rainfall that could theoretically occur in an hour?
7
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3answers
536 views

Algorithmically Determining the Rainy Season

I have historical precipitation data for hundreds of cities around the world. I would like to algorithmically determine when the rainy season (if exists) is for each location. Are there any algorithms ...
3
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2answers
113 views

Why do clouds have areas of darkness instead of scattering light to produce a rainbow?

I suspect it has to do with the difference in size of a rain drop and that of the water particles in the cloud.
30
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2answers
51k views

At what humidity does it start to rain?

As far as I understand it is perfectly valid for air to have 100% humidity. At that point, all water can still exist in form of vapor, non-condensed. Does it immediately start to rain if humidity is >...
13
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1answer
904 views

Do forests affect local rainfall and climate significantly?

I know that forests can change the local temperature, but what about rainfall?. Do forests affect rainfall in their region? I have read that if a forest is very big, it can cause minor changes to ...
5
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1answer
202 views

How does high rate of evapo-transpiration contribute to the ineffectiveness of rainfall?

If evapo-transpiration is high then more water vapor is taken up to the atmosphere and more condensation takes place resulting in more rainfall. But in the book The Environment of Pakistan by Huma Naz ...
8
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2answers
227 views

TRMM rainfall measurement for synoptic systems

I have gone through the website of TRMM that explains how the TRMM satellite gather precipitation data- http://pmm.nasa.gov/node/158. During the Indian Summer Monsoon (ISM), we have synoptic systems ...
14
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3answers
18k views

If it rains harder, does it mean the rain's duration will be shorter?

If it rains real hard, is there a chance the rain's duration will be shorter? I think the if the rain in the clouds disperses with such force the rain will be over faster than if it was just a light ...

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