North American Regional Climate Simulations with WRF/Noah-MP: Validation and the effect of groundwater interaction Michael Barlage Mukul Tewari, Fei Chen, Kevin Manning (NCAR) Gonzalo Miguez-Macho (U. Santiago) 14 th WRF Users’ Workshop, 26 June 2013
Domain and Setup Two six-month 30km simulations starting Feb and 2010 Spin-up soil for one year using offline HRLDAS IC/BC from NARR CAM radiation; YSU; Thompson
LSM Setup Default Noah LSM Noah-MP with OPT_RUN=3: free drainage comparable to Noah runoff scheme Noah-MP with OPT_RUN=5: Miguez-Macho & Fan groundwater with equilibrium water table Noah-MP with OPT_BTR=1(Noah) and 2 (CLM)
Equations: Mass balance in groundwater storage: Darcy’s Law for groundwater – river exchange: Darcy’s Law for lateral groundwater flow: width of flow cross section Transmisivity Head difference divided by distance (water table slope) conductivity w i,j Q1Q1 Q2Q2 Q3Q3 Q4Q4 Q5Q5 Q6Q6 Q7Q7 Q8Q8 Plan view h i,j Mean sea level SgSg Q8Q8 Q4Q4 R Qr Cell ij Cross section view Miguez-Macho & Fan water table dynamics in NOAH-MP Water table depth (wtd) Fan et al, JGR 2007 Miguez-Macho et al., JGR 2007
Climate: 2002 and 2010 MAM
Climate: 2002 and 2010 JJA
Analysis Regions Based on NCDC Regional Climate Zones Observations: METAR/SYNOP stations, NCDC daily gridded precip
Depth to Water Table – MMF input Looks similar to terrain Focus of this presentation are locations with shallow water table
Regional Groundwater Recharge: 2010 NoahNoah-MP R3Noah-MP R5
Regional Groundwater Recharge: 2010 NoahNoah-MP R3Noah-MP R5
Regional Groundwater Recharge: 2002 NoahNoah-MP R3Noah-MP R5
Regional Deep Soil Moisture: 2010 NoahNoah-MP R3Noah-MP R5
Regional Deep Soil Moisture: 2002 NoahNoah-MP R3Noah-MP R5
Regional Root Soil Moisture: 2010 NoahNoah-MP R3Noah-MP R5
Regional Root Soil Moisture: 2002 NoahNoah-MP R3Noah-MP R5
Regional Latent Heat Flux: 2010 NoahNoah-MP R3Noah-MP R5
Regional Latent Heat Flux: 2010 NoahNoah-MP R3Noah-MP R5
Regional Latent Heat Flux: 2002 NoahNoah-MP R3Noah-MP R5 Increase LH especially in JJA
Regional Latent Heat Flux: 2002 NoahNoah-MP R3Noah-MP R5
Regional Precipitation: 2010 NoahNoah-MP R3Noah-MP R5 Black: NCDC climatologyThick Black: NCDC observations Hurricane Alex
Regional Precipitation: 2010 NoahNoah-MP R3Noah-MP R5 Black: NCDC climatologyThick Black: NCDC observations Hurricane Alex
Regional Precipitation: 2002 NoahNoah-MP R3Noah-MP R5 Black: NCDC climatologyThick Black: NCDC observations
Regional Precipitation: 2002 NoahNoah-MP R3Noah-MP R5 Black: NCDC climatologyThick Black: NCDC observations
Temperature – 2 meter: MAM 2010 day
Temperature – 2 meter: MAM 2010 night All MAM 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B ECCanada MAM 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B WCCanada MAM 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B UpMidWest MAM 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B NoRockPln MAM 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B South MAM 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B
Temperature – 2 meter: JJA 2010 day
Temperature – 2 meter: JJA 2010 night South JJA 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B NoRockPln JJA 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B UpMidWest JJA 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B WCCanada JJA 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B ECCanada JJA 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B All JJA 2010 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B
Temperature – 2 meter: MAM 2002 day
Temperature – 2 meter: MAM 2002 night South MAM 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B NoRockPln MAM 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B UpMidWest MAM 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B WCCanada MAM 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B ECCanada MAM 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B All MAM 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B
Temperature – 2 meter: JJA 2002 day
Temperature – 2 meter: JJA 2002 night South JJA 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B NoRockPln JJA 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B UpMidWest JJA 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B WCCanada JJA 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B ECCanada JJA 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B All JJA 2002 Day Nit BiasRMSEBiasRMSE NOAH MPR3B MPR5B MPR3B MPR5B
Dewpoint – 2 meter: MAM 2010 day
Dewpoint – 2 meter: MAM 2010 night
Dewpoint – 2 meter: JJA 2010 day
Dewpoint – 2 meter: JJA 2010 night
Dewpoint – 2 meter: MAM 2002 day
Dewpoint – 2 meter: MAM 2002 night
Dewpoint – 2 meter: JJA 2002 day
Dewpoint – 2 meter: JJA 2002 night
Summary Tested a new groundwater option to Noah-MP that accounts for aquifer interaction Noah-MP performs better than Noah for near surface temperature (with exceptions), though more optimization is likely required Noah-MP performs the same (2002) or regionally worse (2010) for precipitation In regions with low water table depth, upward transport of water: –Increases late summer latent heat flux –Has little effect on precipitation –Improves surface temperature simulation