Factors to Consider When Choosing Accounts Payable Services Providers.pptx
The role of climate variability and climate change in NSW water sharing arrangements - Shahadat Chowdhury
1. The role of climate variability and climate change in NSW water sharing arrangements Richard Beecham (Water Modelling) Shahadat Chowdhury (Water Modelling) Mark Harris (Planning and Policy)
5. CURRENT PLAN’S RESPONSE TO CLIMATE STATE Simulated response of the Namoi Water Sharing Plan to climate variability Ref: NamoWSP2010.sqq % of long term mean 110 195 WETTEST DECADE 80 50 DRIEST DECADE 100 Diversions 100 1893-2008 Inflows PERIOD
6.
7.
8. PLANNING IN STATIONARY CLIMATE 10 YR VARIABILITY PLAN LIFE Annual Rainfall (mm) Residual mass curve
9. NON STATIONARY CLIMATE STATE 10 YR VARIABILITY PLAN LIFE STATIONARY NON STATIONARY YEAR RAINFALL REFERENCE YEAR (2030 for Basin Plan)
15. The End Author contacts: Richard Beecham, [email_address] Shahadat Chowdhury, [email_address] Mark Harris, [email_address]
16.
17.
18. CURRENT PLAN’S RESPONSE TO CLIMATE STATE Ref: NamoWSP2010.sqq Simulated response of the Namoi Water Sharing Plan to climate variability 1590 GL/a (240%) 260 GL/a (110%) 1390 GL/a (195%) Wettest decade 1947 to 1957 330 GL/a (50%) 190 GL/a (80%) 355 GL/a (50%) Driest decade 1936 to 1946 660 GL/a (100%) AVERAGE END of SYSTEM FLOW 235 GL/a (100%) AVERAGE DIVERSION 705 GL/a (100%) Full length 1893 to 2008 AVERAGE MAJOR INFLOW
19. CURRENT PLAN’S RESPONSE TO CLIMATE STATE Simulated response of the Lachlan Water Sharing Plan to climate variability Ref: LachW018.sqq 210 GL/a (210%) 335 GL/a (120%) 1480 GL/a (195%) Wettest decade 1948 to 1958 40 GL/a (40%) 265 GL/a (95%) 435 GL/a (60%) Driest decade 1901 to 1911 100 GL/a (100%) AVERAGE END of SYSTEM FLOW 280 GL/a (100%) AVERAGE DIVERSION 750 GL/a (100%) Full length 1898 to 2008 AVERAGE MAJOR INFLOW
20. FUTURE PLAN’S RESPONSE TO CLIMATE STATE The Guide to the Basin Plan proposed the accreditation tests shown in first two columns: *case study: Lachlan & Namoi 90-95% ~ 200% ~ 50% 100% MAJOR INFLOW * ~ 90% A% or less A % Driest decade 90-99% C % or less C % Climate change Full length ~ 110-120% B % or less B % Wettest decade 100% CURRENT IRRIGATION* 100% SURFACE WATER EXTRACTION 100% Full length AVAILABLE WATER