Questions tagged [rainfall]

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1answer
41 views

Is there an index that evaluate how even temporal rainfall distribution is?

Like some biodiversity indices that account for species evenness (whether it is dominated by a few species), I am wondering do meteorologists use an index to describe how even a temporal rainfall ...
2
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1answer
52 views

Do daily operations (max, min etc) on climate model data reference different periods because of UTC?

If I calculate daily accumulated precipitation or daily maximum temperature from global climate data, will I be getting statistics over different local times, because the operation uses the climate ...
2
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1answer
50 views

Estimating Average Rainfall

In a question related to my previous one. I am in the process of building a fantasy world. I have the landmasses with elevation worked out along with the air/wind directions at the various latitudes ...
2
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1answer
37 views

Calculating mean time spent precipitating for a specified period/area?

I would like to calculate the prior probability of active precipitation currently taking place at any random moment during a year. The area I’m looking at (London, UK) has averages of 601.7mm of rain ...
2
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1answer
141 views

Are weather changes periodic? (Do the same weather patterns repeat over years?) (Cycles) (Journal paper suggestion)

I am wondering if there is long term (10 year, 7 year, 20 year) periodic patterns Similar to short term seasonal and periodic patterns in weather such as sea/land wind, monsoon, ENSO, ocean sea-saw, ...
2
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1answer
44 views

Discrete distribution of daily rainfall [closed]

How can I estimate the rainfall rate every ten minutes during a day having the total amount of rainfall during that day ?
2
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0answers
108 views

To what degree do large lakes influence precipitation levels compared to the ocean?

I was wondering what percentage of precipitation could be estimated to have been contributed by large lakes such as the Great Lakes or Lake Baikal in the immediate vicinity of said lakes (say, within ...
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 ...
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1answer
34 views

monthly temperatue by state

I am trying to find out monthly average temperature and average rainfall for states of USA from 2015 to 2017. To my surprise I am not able to find it anywhere. Please help. I could find this link - ...
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2answers
70 views

Relationship between rainwater and solar radiation

I am an enthusiast in this area and reading some scientific articles on precipitation forecasting and solar irradiation, I was wondering if these two variables have any direct correlation or ...
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1answer
374 views

Area reduction factor reference for precipitation

For a large catchment (>1000ha) I'm looking for some method to use a area reduction factor to adapt precipitation values. I have a large dataset of daily precipitation values but I have to use some ...
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 ...
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: ...
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0answers
33 views

How to choose “relevant” precipitation durations for flash flood modelling?

For my thesis, I model flash floods in urban areas. A book with recommended practices says to use events with a recurrence interval of 30 and 50 years. Regarding the duration of the precipitation ...
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0answers
63 views

Short-term forecast of Europe by using synoptic charts

I should make a short-term forecast of Europe by using synoptic charts. I'm finding it really hard so I'd be glad if you help me. 'В' means high atmospheric pressure I'm trying to figure out the ...
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2answers
509 views

Is there a way to approximate the density of air during rain?

Given a rate of precipitation (in mm3/hour), and average droplet diameter, is is it possible to calculate (or even ballpark) the density of the air+rain droplets at time of rainfall? What I mean is, ...
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1answer
78 views

Rainfall units conversion from depth to rate/intensity

Given 6-hour rainfal data with units in meters(m), how can one convert the 6-hourly rainfall depth in meters(m) to ...
0
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2answers
92 views

Deserts and Humidity

How is that a general rule of thumb that less humidity equals more rain? Deserts don’t get much rain and humidity is also very low. Rainforests get a lot of rain when the humidity is very high so how ...
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1answer
55 views

Artefacts in PERSIANN-CCS data

I downloaded PERSIANN-CCS for the region of Pawlowdar, Kazakhstan and this has stripes all over my downloaded data. For another AOI in Kazakhstan I do not have this problem. Does anyone of you have ...
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1answer
53 views

Tipping bucket rain gauge measurement, normalizing

I have bought this cheap rain gauge (only the rain gauge, not the other parts) for measuring rainfall with a Raspberry Pi. It works as far as I can tell, every bucket swing will result in an interrupt ...
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2answers
104 views

Can they still not predict rain even one week in advance?

Every ten minutes, I make an API call to the SMHI's API with the GPS coordinates less than 1 km from here (which cannot possibly matter for accuracy, but does for privacy). SMHI is the Swedish weather ...
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1answer
84 views

Humidity and Rainfall

Usually the higher the humidity the more rainfall we get like in the summer here in Asheville, North Carolina we get a lot of showers and thunderstorms in the summer from the high humidity but I saw ...
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0answers
23 views

How to use gridded data for a catchment scale analysis?

I need to use gridded rainfall data (0.1 degree grids) and station discharge data for analysing rainfall-runoff relationships. How do I process the data in such a way that it is justifiable to compare ...
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0answers
33 views

Weather measurements of how long ago affects the amount of rainfall? (Which lags of temperature, precipitation, windspeed, radiation. humidity. )

I am trying to predict the amount of rainfall using weather measurements (temperature, precipitation, humidity, wind speed, surface radiation). For long term, midterm, and short term predictions, ...
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0answers
46 views

Rainfall guage stations outside the watershed

How can I determine the rainfall depth for an event over the watershed, if I just have two stations, S1 and S2, that are outside the catchment? Methods I have thought of were to take the average of ...
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0answers
61 views

Changes in rainfalls, sea level and tropical cyclones

Is there any scientific evidence that exploitation of natural resources (fossil energies, forests etc.) affects rainfalls or sea level, which can represent extreme events? I read IPCC 2014 report and ...

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