measuring rain
 

Just a quick refresher for me please.When measuring rain are we
measuring what would be an accumulated depth on a level surface??
Also is 1mm equivalent to 1 liter per square meter??
Thanks in advance
Nick

measuring rain
 

On 13 mai, 22:14, wrote:
Just a quick refresher for me please.When measuring rain are we
measuring what would be an accumulated depth on a level surface??

Yes.

Also is 1mm equivalent to 1 liter per square meter??

Yes.

Colin Youngs
Brussels

measuring rain
 

On 13 May, 21:20, Colin Youngs
wrote:
On 13 mai, 22:14, wrote:

Just a quick refresher for me please.When measuring rain are we
measuring what would be an accumulated depth on a level surface??

Yes.

Also is 1mm equivalent to 1 liter per square meter??

Yes.

Colin Youngs
Brussels

Thanks Colin-that was fast!!!

measuring rain
 

Yes, and it's worth thinking about it - 1 litre (spelling please!) is 1 kg,
so for every 1 mm of rainfall, each 1 square km has 1,000 tonnes of water -
so today, with ~25mm of rainfall each square km had 25,000 tonnes of water!

Chris



wrote in message
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On 13 May, 21:20, Colin Youngs
wrote:
On 13 mai, 22:14, wrote:

Just a quick refresher for me please.When measuring rain are we
measuring what would be an accumulated depth on a level surface??

Yes.

Also is 1mm equivalent to 1 liter per square meter??

Yes.

Colin Youngs
Brussels

Thanks Colin-that was fast!!!

measuring rain
 

On 13 May, 21:43, "CHRIS KIDD" wrote:
Yes, and it's worth thinking about it - 1 litre (spelling please!) is 1 kg,
so for every 1 mm of rainfall, each 1 square km has 1,000 tonnes of water -
so today, with ~25mm of rainfall each square km had 25,000 tonnes of water!

But it just wouldn't sound right if Sacha Distel had sung:
"Tonnes of rain keep falling on my head"

So, taking the average size for a head, if M.Distel had stood outside
for ten minutes in a rain shower that was giving say 5 mms of rain
per hour, how many kgs would have fallen on his head during that
time?

Jack

measuring rain
 

Jack ) wrote:
On 13 May, 21:43, "CHRIS KIDD" wrote:
Yes, and it's worth thinking about it - 1 litre (spelling please!) is 1 kg,
so for every 1 mm of rainfall, each 1 square km has 1,000 tonnes of water -
so today, with ~25mm of rainfall each square km had 25,000 tonnes of water!

But it just wouldn't sound right if Sacha Distel had sung:
"Tonnes of rain keep falling on my head"

So, taking the average size for a head, if M.Distel had stood outside
for ten minutes in a rain shower that was giving say 5 mms of rain
per hour, how many kgs would have fallen on his head during that
time?

Jack


I guessed an average head as 58cm I worked it out as 22g (I think!)

Sarah

measuring rain
 

On 14 May, 06:06, "Jack )"
wrote:

But it just wouldn't sound right if Sacha Distel had sung:
"Tonnes of rain keep falling on my head"

So, taking the average size for a head, if M.Distel had stood outside
for ten minutes in a rain shower that was giving say 5 mms of rain
per hour, how many kgs would have fallen on his head during that
time?

Jack

Hi, Jack,

When Paul Newman had raindrops falling on his head in Butch Cassidy
and the Sundance Kid (sung by BJ Thomas - a far superior version to
Sacha's imho), he was riding around on a bicycle. How would that
affect the amount falling on his head? He was riding in a circle at
just above walking pace, had a brimmed cowboy hat on and had Katharine
Rodd on his knee. It was also in 1969, before AGW(;0)

Raindrops fell on my head last night when I was getting the coal in
btw
15.5mm at 09Z this morning (exactly the same as Saturday 09Z reading)

Ken
Copley

measuring rain
 

On 14 May, 11:08, Ken Cook wrote:
On 14 May, 06:06, "Jack )"

wrote:
But it just wouldn't sound right if Sacha Distel had sung:
"Tonnes of rain keep falling on my head"

So, taking the average size for a head, if M.Distel had stood outside
for ten minutes in a rain shower that was giving say 5 mms of rain
per hour, how many kgs would have fallen on his head during that
time?

Jack

Hi, Jack,

When Paul Newman had raindrops falling on his head in Butch Cassidy
and the Sundance Kid (sung by BJ Thomas - a far superior version to
Sacha's imho), he was riding around on a bicycle. How would that
affect the amount falling on his head? He was riding in a circle at
just above walking pace, had a brimmed cowboy hat on and had Katharine
Rodd on his knee. It was also in 1969, before AGW(;0)

Raindrops fell on my head last night when I was getting the coal in
btw
15.5mm at 09Z this morning (exactly the same as Saturday 09Z reading)

Ken
Copley

Make that Katharine Ross, not Rodd!!
Ken

measuring rain
 

Ken Cook wrote:

Jack

Hi, Jack,

When Paul Newman had raindrops falling on his head in Butch Cassidy
and the Sundance Kid (sung by BJ Thomas - a far superior version to
Sacha's imho), he was riding around on a bicycle. How would that
affect the amount falling on his head? He was riding in a circle at
just above walking pace, had a brimmed cowboy hat on and had Katharine
Rodd on his knee. It was also in 1969, before AGW(;0)

Raindrops fell on my head last night when I was getting the coal in
btw
15.5mm at 09Z this morning (exactly the same as Saturday 09Z reading)

Ken
Copley



There was a New Scientist article once about whether running through the
rain rather than walking made any difference. I think the conclusion was
that it didnt make that much difference cos you run into raindrops that
would have otherwise missed you.

But googling brings up this article:
http://www.abc.net.au/science/k2/moments/gmis9749.htm

which suggests that if its raining heavily with the wind blowing towards
you you would end up 44% less wet. Which if my previous answer were
right and he were to remove his hat you could I suppose guess it would
be just under 10g of rain on his head.

Now having worked out that my disney cowboy hat has an area of approx:
0.125m2 If he cycles for 10min at 5mm rainfall rate and assuming 44%
less wet then I think he will have had 46g land on his hat.

Sarah - perhaps I should get on with some work now!