[NatureNS] The depths of winter

From: "John and Nhung" <nhungjohn@eastlink.ca>
To: <naturens@chebucto.ns.ca>
References: <21a6406f-8b37-bf8e-a2f2-8256e15b5471@payzant.net>
Date: Thu, 14 Feb 2019 12:34:55 -0400
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ZnQ6c29saWQgI0NDQ0NDQyAxLjBwdDtwY
Fair enough.  

I've been looking at late August surface water temperatures for a couple of SWNS lakes.  There's lots of noise, but I arbitrarily compared temperatures from 2015-2018 with those collected from various years between 2008 and 2014. For eight lakes in Digby and Yarmouth Counties.  In every case, the mean temperature was up over the more recent period.  

Did a similar comparison for colour levels.  In every case, colour was down, which suggests increased light penetration in more recent years.  

Folks, expect more lakes to become vulnerable to cyanobacterial blooms.  



-----Original Message-----
From: naturens-owner@chebucto.ns.ca [mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Peter Payzant
Sent: February 14, 2019 11:17 AM
To: naturens@chebucto.ns.ca
Subject: Re: [NatureNS] The depths of winter

Hi, John-

We haven't looked for trends. Even over our 16 years of data, there is 
considerable noise to overcome. Any shorter periods would only make that 
more of a challenge.

--- Peter

On 2019-02-14 10:45 AM, John and Nhung wrote:
> The value of those data could be considerable.  What sorts of trends do you notice, for instance?  First eight years vs. second eight years?  Or first five, middle sic, last five?
>
> Just thinking out loud!

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