Table 1 Water quality of runoff water.

From: CH4 emissions from runoff water of Alaskan mountain glaciers

Glacier

Date

Dissolved CH4

EC

pH

DOC

Note

(nmol CH4/L)

N

SD (nmol CH4/L)

(mS/cm)

(µmol C/L)

N

Gulkana

2021-Jun-27

2.8

2

0.0

0.08

7.6

   

2022-Jun-13

2.9

3

0.1

0.12

8.0

   

2022-Jul-30

     

17

2

 

Canwell

2021-Jun-28

2.9

3

0.1

0.07

7.7

   

2022-Jun-14

5.3

3

0.1

0.15

6.6

18

3

Downstream

2022-Jun 14

3.1

3

0.1

0.16

7.9

  

Upstream

Castner

2021-Jun-26

4.1

2

0.0

0.28

7.4

   

2022-Jun-12

120

3

9.5

0.36

7.6

   

2022-Jun-12

     

33

3

 

2022-Jul-31

     

23

2

 

Matanuska

2022-Jun-18

5.1

6

0.1

0.17

7.9

   
  1. Dissolved CH4: concentration of dissolved CH4 in the RW, SD: standard deviation for dissolved CH4, EC: electrical conductivity, DOC: dissolved organic carbon in the RW. N: number of repeated measurements. The values of dissolved CH4 in Gulkana (2021, 2022) and Canwell (2021) are close to the detection limit. Note that the DOC samples from Castner and Gulkana in 2022 were collected separately at the end of July. The EC and pH were measured once at each site.
Back to article page