NYSERDA Conference, Albany, NY November, 2011 1 E&S - - PDF document

▶
nyserda conference albany ny november 2011
SMART_READER_LITE
LIVE PREVIEW

NYSERDA Conference, Albany, NY November, 2011 1 E&S - - PDF document

Sep 19, 2023 202 likes •469 views

T.J. Sullivan 1 B.J. Cosby 2 T.C. McDonnell 1 C.T. Driscoll 3 NYSERDA Conference, Albany, NY November, 2011 1 E&S Environmental Chemistry, Inc., P.O. Box 609, Corvallis, OR 97339 2 Department of Environmental Sciences, University of Virginia,

slide-1
SLIDE 1

T.J. Sullivan1 B.J. Cosby2 T.C. McDonnell1 C.T. Driscoll3

NYSERDA Conference, Albany, NY November, 2011

1 E&S Environmental Chemistry, Inc., P.O. Box 609, Corvallis, OR 97339 2 Department of Environmental Sciences, University of Virginia,

Charlottesville, VA 22903

3 Department of Civil and Environmental Engineering, Syracuse

University, Syracuse, NY 13244

slide-2
SLIDE 2
  • NYSERDA
  • National Park Service
  • U.S. EPA
  • U.S. Forest Service

2

slide-3
SLIDE 3
  • 1. Critical Load – What is it?
  • 2. CL vs. TL vs. Exceedance
  • 3. Models
  • 4. Major Research Focus
  • Weathering
  • Critical Limit
  • Extrapolation
  • 5. Exceedance

3

slide-4
SLIDE 4
  • Critical Load
  • Target Load (Dynamic CL)
  • Exceedance

4

slide-5
SLIDE 5
  • Steady State Mass Balance
  • SSWC
  • Process Models
  • MAGIC
  • PnET-BGC

5

slide-6
SLIDE 6

6

Aquatic Terrestrial Acidification

X X

N Enrichment Biodiversity

slide-7
SLIDE 7

Base cation balance CL = weathering + deposition

  • uptake – ecological buffer

7

slide-8
SLIDE 8

CL = weathering + deposition

  • uptake – ecological buffer

8

slide-9
SLIDE 9

9

slide-10
SLIDE 10

10

  • 40
  • 30
  • 20
  • 10

10 20 30 40 50

ANC (µeq/L) Year

LTM Data MAGIC Modeling

1980 1990 2000 2010

slide-11
SLIDE 11

CL = weathering + deposition

  • uptake – ecological buffer

Ecological buffer = runoff x critical ANC leaching limit

  • Protect surface water –

11

  • ANC = 50 µeq/L
  • Protect soil and vegetation –
  • Soil solution Ca:Al = 1, 10
  • Soil BS = ?
slide-12
SLIDE 12

12

slide-13
SLIDE 13

13

10 20 30 40 50 60 70 80 ≤ 25 25 - 50 50 - 75 75-100 > 100 Number of MAGIC Modeled Watersheds Critical Load Class (meq/m2/yr) Ratio = 1 Ratio = 10

slide-14
SLIDE 14

14

slide-15
SLIDE 15

15

slide-16
SLIDE 16

10 20 30 40 50 60 Number of Trees Base Saturation - Upper B Horizon (%) Growth Decline No Growth Decline

16

slide-17
SLIDE 17

17

% Base Saturation in Upper B Horizon Sugar Maple Seedling Count

slide-18
SLIDE 18
  • Numeric
  • Spatial

18

slide-19
SLIDE 19

19

slide-20
SLIDE 20

20

Landscape Characteristics Water Chemistry

  • Watershed

area

  • WA:SA
  • Elevation
  • Slope
  • % clay in soil
  • Soil pH
  • Soil depth to

restricting layer

  • ANC
  • pH
  • Sum of base

cations

  • Sum of base

cations – chloride

  • Sulfate
  • Nitrate
slide-21
SLIDE 21

21

50 100 150 200 250 50 100 150 200 250 Critical Load (meq/m2/yr) Estimated by Regression Critical Load (meq/m2/yr) MAGIC Calculated

slide-22
SLIDE 22

22

slide-23
SLIDE 23

23

slide-24
SLIDE 24

24

slide-25
SLIDE 25

25

slide-26
SLIDE 26

26