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Acceptance and utilization of LTER data requires that:

  • The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
  • The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications.
  • A copy of any resultant publications should be sent to:

(Principal Investigator)
Ecosystems Center;
Marine Biological Laboratory
Woods Hole, MA 02543


FILE NAME: This Document in ASCII: 2001gemkuparuk.txt
Data File in Comma Delimited ASCII : 2001gemkuparuk.zip

YEARS: 1921-2100

PI: John Hobbie

OTHERS: Ed Rastetter, Bonnie Kwiatkowski, S‚verine Le Dizes

BRIEF DESCRIPTION: Le Dizes, S., Kwiatkowski B.L., Rastetter E.B., Hope A., Hobbie J.E., Stow D., Daeschner S., Modelling biogeochemical responses of tundra ecosystems to temporal and spatial variations in climate in the Kuparuk River Basin (Alaska), In press "Journal of Geophysical Research". We ran the model at a 10 km x 10 km resolution for 123 cells at a yearly time step for 180 years, from 1921 to 2100. Two scenarios enabled the investigation of the effects of two opposing climate change scenarios for the 2001-2100 future period: warmer and wetter ("wet scenario" or Scenario 1) and warmer and drier ("dry scenario" or Scenario 2). These 246 files contain all simulation results for each scenario for individual cells in the Kuparuk River basin.

KEYWORDS: Alaska; modeling; climate; biogeochemistry; nitrogen; carbon

SITE TYPE: Terrestrial

RESEARCH LOCATION: RESEARCH LOCATION: Kuparuk River basin, Alaska

METHODS: The Kuparuk River watershed was divided into 123, 10*10 km grid cells. The cells are labeled Cell 1 - 123 from north-west to south-east (Toolik Lake is located in Cell 119). We applied the model one grid cell at a time at the 10 km x 10 km resolution predefined map. We assumed there was no interaction between adjacent grid cells. We ran MBL-GEM III to steady state for each of the grid cells, using the reconstructed 1921-1925 average climate. (Le DizŠs et al., in press). When the steady state was reached, the drivers were varied yearly based on the historical reconstruction of climate and CO2 (1921-2000) and the two predicted future climate scenarios (2001-2100). These simulations use the tussock tundra calibration developed by Le DizŠs et al. (in press) for Toolik Lake, Alaska. For more information, including analysis and discussion of these results, see Le DizŠs et al. (in press).

NOTES: MODEL NAME: MBL-GEM III version described in Le DizŠs et al. (in press). ACKNOWLEDGEMENTS: This research was supported by funds from the National Science Foundation (NSF-LTER 0221000# and NSF-OPP 9732281). We wish to thank D. Walker and L. Hinzman for data.

VARIABLE DESCRIPTION:


First row in file defines variable
Second row defines units
Subsequent rows are numeric value

col	Variable name	units	comments
1	Time	year	
2	CO2	ppmv	
3	Daily Air Temp max	deg C	Average maximum daily 
			temperature for growing
			season
4	Daily Air Temp min	deg C	Average minimum daily
			temperature for growing
			season
5	Daily Shortwave Rad.	MJ m-2 day-1	Average daily short-wave
			radiation
6	Precipitation	m H2O yr-1	
7	NH4 Deposition	gN m-2  yr-1	
8	Plant Act Seas Leng	days	active season length for
			vegetation
9	Soil Act Seas Leng	days	active season length for
			soil
10	Foliage Carbon	gC m-2	
11	Wood Carbon	gC m-2	
12	Root Carbon	gC m-2	
13	Foliage Nitrogen	gN m-2	
14	Wood Nitrogen	gN m-2	
15	Root Nitrogen	gN m-2	
16	Labile Foliage C	gC m-2	
17	Labile Wood C	gC m-2	
18	Labile Root C	gC m-2	
19	Labile Foliage N	gC m-2	
20	Labile Wood N	gC m-2	
21	Labile Root N	gC m-2	
22	Soluble SC	gC m-2	Acid soluble soil C
23	Extractive SC	gC m-2	Polar plus non-polar
			extractable soil C
24	Insoluble SC	gC m-2	Acid insoluble soil C
25	Humus SC	gC m-2	Humus soil C
26	Active SN	gN m-2	Active soil organic N
27	Humus SN	gN m-2	Humus Soil organic N
28	Soil NH4	gN m-2	
29	dFoliage Carbondt	gC m-2yr-1	Annual rate of change for
			state variable listed above
30	dWood Carbondt	gC m-2yr-1	Annual rate of change for
			state variable listed above
31	dRoot Carbondt	gC m-2yr-1	Annual rate of change for
			state variable listed above
32	dFoliage Nitrogendt	gN m-2yr-1	Annual rate of change for
			state variable listed above
33	dWood Nitrogendt	gN m-2yr-1	Annual rate of change for
			state variable listed above
34	dRoot Nitrogendt	gN m-2yr-1	Annual rate of change for
			state variable listed above
35	dLabile Foliage Cdt	gC m-2yr-1	Annual rate of change for
			state variable listed above
36	dLabile Wood Cdt	gC m-2yr-1	Annual rate of change for
			state variable listed above
37	dLabile Root Cdt	gC m-2yr-1	Annual rate of change for
			state variable listed above
38	dLabile Foliage Ndt	gC m-2yr-1	Annual rate of change for
			state variable listed above
39	dLabile Wood Ndt	gC m-2yr-1	Annual rate of change for
			state variable listed above
40	dLabile Root Ndt	gC m-2yr-1	Annual rate of change for
			state variable listed above
41	dSoluble SCdt	gC m-2yr-1	Annual rate of change for
			state variable listed above
42	dExtractive SCdt	gC m-2yr-1	Annual rate of change for
			state variable listed above
43	dInsoluble SCdt	gC m-2yr-1	Annual rate of change for
			state variable listed above
44	dHumus SCdt	gC m-2yr-1	Annual rate of change for
			state variable listed above
45	dActive SNdt	gN m-2yr-1	Annual rate of change for
			state variable listed above
46	dHumus SNdt	gN m-2yr-1	Annual rate of change for
			state variable listed above
47	dSoil NH4dt	gN m-2yr-1	Annual rate of change for
			state variable listed above
48	Net Plant Prod.	gC m-2 yr-1	Net primary production (NPP)
49	Total Plant Resp.	gC m-2 yr-1	Total plant respiration
50	Total Litt C	gC m-2 yr-1	Total litter C
51	Total Litt N	gN m-2 yr-1	Total litter N
52	Photosynthesis	gC m-2 yr-1	
53	N Translocation	gN m-2 yr-1	Total N translocation from 
			leaves before tissue 
			abscission
54	Structural Transloca	g N m-2 yr-1	N translocation from 
			structural component
55	Labile Translocation	g N m-2 yr-1	N translocation from labile 
			component
56	NH4 Uptake	gN m-2 yr-1	
57	Min root C:N	g C g-1 N	Minimum root C:N ratio 
			(diagnostic variable)
58	C storage to Clf	gC m-2 yr-1	Gross C flux to labile 
			component of leaves 
59	C storage to Clw	gC m-2 yr-1	Gross C flux to labile
			component of wood
60	C storage to Clr	gN m-2 yr-1	Gross C flux to labile
			component of roots
61	N storage to Nlf	gC m-2 yr-1	Gross N flux to labile
			component of leaves 
62	N storage to Nlw	gN m-2 yr-1	Gross N flux to labile
			component of wood
63	N storage to Nlr	gN m-2 yr-1	Gross N flux to labile
			component of roots
64	Transport from Clf	gC m-2 yr-1	Gross C flux out of labile
			component of leaves 
65	Transport from Clw	gC m-2 yr-1	Gross C flux out of labile
			component of wood
66	Transport from Clr	gC m-2 yr-1	Gross C flux out of labile
			component of roots
67	Transport from Nlf	gN m-2 yr-1	Gross N flux out of labile
			component of leaves 
68	Transport from Nlw	gN m-2 yr-1	Gross N flux out of labile
			component of wood
69	Transport from Nlr	gN m-2 yr-1	Gross N flux out of labile
			component of roots
70	Net C Alloc to Clf	gC m-2 yr-1	Net C flux to labile
			component of leaves 
71	Net C Alloc to Clw	gC m-2 yr-1	Net C flux to labile
			component of wood
72	Net C Alloc to Clr	gC m-2 yr-1	Net C flux to labile
			component of roots
73	Net N Alloc to Nlf	gN m-2 yr-1	Net N flux to labile
			component of leaves 
74	Net N Alloc to Nlw	gN m-2 yr-1	Net N flux to labile
			component of wood
75	Net N Alloc to Nlr	gN m-2 yr-1	Net N flux to labile
			component of roots
76	Foliage C Growth	gC m-2  yr-1	
77	Wood C Growth	gC m-2  yr-1	
78	Root C Growth	gC m-2  yr-1	
79	Foliage N Growth	gN m-2  yr-1	
80	Wood N Growth	gN m-2  yr-1	
81	Root N Growth	gN m-2  yr-1	
82	Sapwood	gC m-2	Sapwood C
83	Sapwood Nitrogen	g N m-2	
84	Tot Foliage Litter C	gC m-2 yr-1	Total litter C from leaves
85	Total Wood Litter C	gC m-2 yr-1	Total litter C form wood
86	Total Root Litter C	gC m-2 yr-1	Total litter C from roots
87	Tot Foliage Litter N	gN m-2 yr-1	Total litter N from leaves
88	Total Wood Litter N	gN m-2 yr-1	Total litter N form wood
89	Total Root Litter N	gN m-2 yr-1	Total litter N from roots
90	Str Foliage Litter C	gC m-2 yr-1	Structural litter C from 
			leaves
91	Str Wood Litter C	gC m-2 yr-1	Sturctural litter C form 
			wood
92	Str Root Litter C	gC m-2 yr-1	Sturctural litter C from 
			roots
93	Str Foliage Litter N	gN m-2 yr-1	Sturctural litter N from 
			leaves
94	Str Wood Litter N	gN m-2 yr-1	Sturctural litter N form 
			wood
95	Str Root Litter N	gN m-2 yr-1	Sturctural litter N from 
			roots
96	Lab Foliage Litter C	gC m-2 yr-1	Labile litter C from leaves
97	Lab Wood Litter C	gC m-2 yr-1	Labile litter C form wood
98	Lab Root Litter C	gC m-2 yr-1	Labile litter C from roots
99	Lab Foliage Litter N	gN m-2 yr-1	Labile litter N from leaves
100	Lab Wood Litter N	gN m-2 yr-1	Labile litter N form wood
101	Lab Root Litter N	gN m-2 yr-1	Labile litter N from roots
102	Foliage Respiration	gC m-2 yr-1	Total respiration from 
			leaves
103	Wood Respiration	gC m-2 yr-1	Total respiration from wood
104	Root Respiration	gC m-2 yr-1	Total respiration from roots
105	Metabolic Fol. Resp.	g C m-2 yr-1	metabolic respiration from 
			leaves
106	Metabolic Wood Resp.	g C m-2 yr-1	metabolic respiration from 
			wood
107	Metabolic Root Resp.	g C m-2 yr-1	metabolic respiration from 
			roots
108	Foliage Growth Resp.	g C m-2 	Growth respiration from 
			leaves
109	Wood Growth Resp.	g C m-2 	Growth respiration from wood
110	Root Growth Resp.	g C m-2 	Growth respiration from 
			roots
111	Resp Temp. Func.	unitless	Temperature response 
			function for plant 
			respiration
112	Foliage Primary Prod	g C m-2 yr-1	Tissue NPP
113	Wood Primary Prod	g C m-2 yr-1	Tissue NPP
114	Root Primary Prod	g C m-2 yr-1	Tissue NPP
115	Vegetation Carbon	g C m-2	Total C in vegetation
116	Vegetation Nitrogen	g N m-2	Total n in vegetation
117	Foliage C:N	g C g-1 N	
118	Wood C:N	g C g-1 N	
119	Root C:N	g C g-1 N	
120	Air Temperature	deg C	Average air temperature
121	Plant Season Length	days-1	
122	Soil Temperature	deg C	
123	Litter C-Soluble SC	gC m-2 yr-1	Litter input to acid soluble 
			component of soils
124	Litter C-Extract SC	gC m-2 yr-1	Litter input to polar plus 
			non-polar extractive 
			component of soils
125	Litter C-Insol SC	gC m-2 yr-1	Litter input to acid 
			insoluble component of soils
126	Solub SC-Extract SC	gC m-2 yr-1	C flux from acid soluble to 
			extractive componet of soil
127	Extract SC-Insol SC	gC m-2 yr-1	C flux from extractive to 
			acid insoluble component of 
			soils
128	Insol SC-Extract SC	gC m-2 yr-1	C flux from acid insoluble 
			to extractive component of 
			soils
129	Insol SC-Humus SC	gC m-2 yr-1	C flux from acid insolubel 
			to humus component of soils
130	Extractives Resp.	gC m-2 yr-1	Respiration from active soil 
			components
131	Humus Resp.	gC m-2 yr-1	Respiration from humus
132	Soil Resp Temp Facto	days yr-1	temperature response 
			function for soil metabolic 
			rate
133	Active SN-Humus SN	gN m-2 yr-1	N flux from active organic N 
			to humus N
134	Act SN-Inorg SN	gN m-2 yr-1	Gross N mineralizatin from 
			active N
135	Inorg SN-Act SN	gN m-2 yr-1	Gross N immobilization into 
			active organic N
136	Humus SN-Inorg SN	gN m-2 yr-1	Gross mineralization from 
			Humus N
137	Total Soil Resp.	gC m-2 yr-1	Total microbial respiration 
			from soils
138	Net N Min.	gN m-2 yr-1	Net N mineralization
139	Total Soil Carbon	g C m-2	
140	Total Soil Nitrogen	g N m-2	
141	Soil Water	mm H2O	
142	Decomp Moisture Fact	unitless	Moisture response function 
			for microbial metabolism
143	Water Discharge	m H2O yr-1	
144	Aqueous Soil NH4	umol N L-1	NH4 concentration in soil 
			water
145	Solid phase Soil NH4	g N m-2	NH4 sorbed to soil particles
146	NH4 Leaching Loss	gN m-2 yr-1	
147	Total Foliage Carbon	gC m-2	
148	Total Wood Carbon	gC m-2	
149	Total Root Carbon	gC m-2	
150	Total Foliage Nit.	gN m-2	Total tissue N (labiel plus 
			structural)
151	Total Wood Nit.	gN m-2	Total tissue N (labiel plus 
			structural)
152	Total Root Nit.	gN m-2	Total tissue N (labiel plus 
			structural)
153	Net Ecosys Prod.	gC m-2 yr-1	Net Ecosystem Production
154	Evapotranspiration	m H20 yr-1	

CALCULATIONS:

  See variable description.

FOR MORE INFORMATION CONTACT:
John Hobbie Ecosystems Center Marine Biological Laboratory 7 MBL St. Woods Hole, MA 02543 (508) 289-7470 Email: jhobbie@mbl.edu

OTHER DATA FILES TO REFERENCE: DryCell1.dat through DryCell123.dat and WetCell1.dat through WetCell123.dat

REFERENCE CITATIONS:


Le DizŠs, S., Kwiatkowski B.L., Rastetter E.B., Hope A., Hobbie J.E., Stow D., Daeschner S. In Press. Modelling biogeochemical responses of tundra ecosystems to temporal and spatial variations in climate in the Kuparuk River Basin (Alaska), "Journal of Geophysical Research".

FORMAT OF VARIABLES:

File Name: DryCell1.dat through DryCell123.dat and WetCell1.dat through WetCell123.dat	

File Type: Ascii text

File naming convention: YYYCellX.dat where YYY = Dry (dry scenario) or wet (wet scenario) and X = 1-123 is cell number for locations as defined below. Latitude and longitude are approximate locations of the center of each 10 km by 10 km cell.  

Cell	Latitude	Longitude
1	70.44	149.0
2	70.44	148.7
3	70.44	148.4
4	70.35	149.0
5	70.35	148.7
6	70.35	148.4
7	70.26	149.2
8	70.26	149.0
9	70.26	148.7
10	70.17	149.5
11	70.17	149.2
12	70.17	149.0
13	70.17	148.7
14	70.08	149.8
15	70.08	149.5
16	70.08	149.2
17	70.08	149.0
18	69.99	150.3
19	69.99	150.0
20	69.99	149.8
21	69.99	149.5
22	69.99	149.2
23	69.99	149.0
24	69.90	150.3
25	69.90	150.0
26	69.90	149.8
27	69.90	149.5
28	69.90	149.2
29	69.90	149.0
30	69.90	148.7
31	69.81	150.3
32	69.81	150.0
33	69.81	149.8
34	69.81	149.5
35	69.81	149.2
36	69.81	149.0
37	69.81	148.7
38	69.72	150.6
39	69.72	150.3
40	69.72	150.0
41	69.72	149.8
42	69.72	149.5
43	69.72	149.2
44	69.72	149.0
45	69.72	148.7
46	69.63	150.6
47	69.63	150.3
48	69.63	150.0
49	69.63	149.8
50	69.63	149.5
51	69.63	149.2
52	69.63	149.0
53	69.63	148.7
54	69.63	148.4
55	69.54	150.6
56	69.54	150.3
57	69.54	150.0
58	69.54	149.8
59	69.54	149.5
60	69.54	149.2
61	69.54	149.0
62	69.54	148.7
63	69.54	148.4
64	69.45	150.6
65	69.45	150.3
66	69.45	150.0
67	69.45	149.8
68	69.45	149.5
69	69.45	149.2
70	69.45	149.0
71	69.45	148.7
72	69.45	148.4
73	69.36	150.6
74	69.36	150.3
75	69.36	150.0
76	69.36	149.8
77	69.36	149.5
78	69.36	149.2
79	69.36	149.0
80	69.36	148.7
81	69.27	150.3
82	69.27	150.0
83	69.27	149.8
84	69.27	149.5
85	69.27	149.2
86	69.27	149.0
87	69.27	148.7
88	69.18	150.3
89	69.18	150.0
90	69.18	149.8
91	69.18	149.5
92	69.18	149.2
93	69.18	149.0
94	69.18	148.7
95	69.09	150.0
96	69.09	149.8
97	69.09	149.5
98	69.09	149.2
99	69.09	149.0
100	69.00	150.0
101	69.00	149.8
102	69.00	149.5
103	69.00	149.2
104	69.00	149.0
105	68.91	150.0
106	68.91	149.8
107	68.91	149.5
108	68.91	149.2
109	68.91	149.0
110	68.82	149.8
111	68.82	149.5
112	68.82	149.2
113	68.82	149.0
114	68.73	149.8
115	68.73	149.5
116	68.73	149.2
117	68.73	149.0
118	68.64	149.8
119	68.64	149.5
120	68.64	149.2
121	68.55	149.5
122	68.55	149.2
123	68.55	149.0

Files are space delimited, all fields are 20 characters wide with one blank space separating fields.
  
Row one contains variable names (alpha-numeric)

Row two contains units (alpha-numeric)

Remaining rows contain numeric values: Column one (time) is in integer format, remaining columns are in scientific notation with the following format X.XXXXXXXXXXXXE+XXX 

NUMBER OF RECORDS: 180 plus 2 header records
     NUMBER OF COLUMNS: 154

STATUS: Type 1

Log of Changes: 27Jan03 Added to LTER database JimL.

										
										
										
										
									
									
									
									
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