posted on Mar, 1 2010 @ 12:39 PM
They didn't really specify what the drop of temperature was in, ...
Tonnes of dead fish raise stink in Rio
Experts say the mass death could be the result of an abrupt temperature change, falling 10 degrees centigrade in 24 hours.
Here in Florida, almost every winter we have a big "fish kill" every time the temperature drops below 30 degrees for an extended period of time.
This includes snook and many other kinds of fish.
This also happens in a lagoon near where I live.
Maybe it just never happened in Rio before because the temperature has never gotten that
LOW before?
I believe this is just a natural occurring event in sub-tropical areas when a very cold front passes thru.
[edit to ADD]
Just checked Rio's weather history, ...
History for Rio de Janeiro, Brazil
It says in the last couple days, the lowest the temperature got was 69 degrees and the high for that day was 71 degrees.
Compare that to the average temperature which is 73 to 84 degrees and you'll see there's not that much difference.
The only real diffence is that for a couplew of days before that their high's were in the 90's.
Could be something with the sudden drop of the barometric pressure caused this?
Seems unlikely, but also seems unlikely that a low temperature of 69 degrees was killing off the fish also.
[edit on 3/1/2010 by Keyhole]