https://www.dillonamaya.com/curriculum-vitae daily 0.75 2026-03-19 https://www.dillonamaya.com/contact daily 0.75 2025-09-05 https://www.dillonamaya.com/personal daily 0.75 2024-11-10 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/7784a5fd-e541-4cd4-ae0f-af25c0d59393/harry_hiking.jpg Personal Interests - Make it stand out Me and my son Harry in Estes Park https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590538418210-RYNANA22APLHIGQMMX36/hongkong.jpg Personal Interests My wife and I in Hong Kong https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590538265759-OB56D1EB3SX06USULPHA/grand+canyon.jpg Personal Interests Exploring the Grand Canyon https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590533774906-G0BS21G15F7CJF1UF8RK/pier_tour.JPG Personal Interests Tour of Scripps Pier https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590534195093-UBKGOLB5DQPR3NI76U3N/cop22_presser.jpg Personal Interests Press conference on global warming hiatus at COP22 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590535273939-SZSINW98AXGYRCAAOT32/cop22_argo.JPG Personal Interests Describing how an Argo float works at COP22 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590536074562-2Q7V5CNITO0JRF5QE8PQ/GELS.jpg Personal Interests Me and students from the 2018 GELS Program https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590538051996-7LUC6M1876D2XF94KSZ0/chiefs.png Personal Interests My family circa 1994, I’m in the white sweater https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590537908890-BIBWH0LR2JEEH7X5I5NH/family2.jpg Personal Interests My family circa 2018, I’m 2nd from right https://www.dillonamaya.com/publications daily 0.75 2026-04-03 https://www.dillonamaya.com/research daily 0.75 2025-03-04 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590106894909-JCZ2X2G01RKLXFVCXM7M/sst_day_15_16_ElNino.png https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590098310651-2YKRNIJVHSRQO4JDWK64/Fig5+copy.png https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590097276249-HFT9OEY9CWQKJ0O9WF33/blob_comic.jpg https://www.dillonamaya.com/presentations daily 0.75 2023-07-17 https://www.dillonamaya.com/home daily 1.0 2025-01-21 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1608853229552-SW3PQMAA4OZ5YAXDUW1O/headshot.jpeg Home https://www.dillonamaya.com/home/npoga monthly 0.5 2020-12-09 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590443914683-WV2UI4LP88M6LQBEIOH6/bams_figure1_web.png Home - North Pacific SST Pacemaker Figure 1 North Pacific Ocean–Global Atmosphere (nPOGA) experimental design. SSTs are restored to the model climatology plus observed historical anomaly in the Pacific Ocean north of 15˚N (solid black line). There is a 5… linearly decreasing buffer zone from 15˚N to 10˚N (dashed black line). Colored shading represents HadISST SSTAs regressed on the PMM SST index. Shaded boxes indicate different Niño indices used in this study. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590445251486-866JQ5PU21QXFO7BP29T/jclim_Fig2.png Home - North Pacific SST Pacemaker Figure 2 (a) Nino3.4 index in observations (red) and the ensemble mean of nPOGA (black). (b) Seasonal correlation of observed and nPOGA Nino indices. X-axis denotes center month of three month seasonal average. Shading in (a) and errobars in (b) represent two standard errors. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590445978598-TJMF74SA76AN7PANVPRH/jclim_Fig.png Home - North Pacific SST Pacemaker Figure 3 Hovmöller diagram of SST anomalies averaged 3˚S-3˚N in the North Pacific in (a) the ensemble mean of nPOGA and (b) observations for January 2014-December 2016. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590446509702-MJ931SBGWI9VBC85YU50/jclim_Fig4.png Home - North Pacific SST Pacemaker Figure 4 Composite of (a) SST (shading) and precipitation (contours, green = wetter) anomalies and (b) SST, sea level pressure (SLP; contours; purple = negative), and surface wind anomalies (quivers) across 17 positive PMM events from 1950-2016 in the ensemble mean of our uncoupled atmospheric model experiments. These simulations consist of 10-members, so we have 170 independent samples. The SST anomalies are prescribed north of solid black line (15˚N), and everywhere else is a seasonal cycle (e.g., no anomalies), which is why it is white. https://www.dillonamaya.com/home/ccmhw monthly 0.5 2020-12-09 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590172244765-JABJKXR2UQW0UNL39OAP/bams_equation1.png Home - Climate Change and Marine Heatwaves - Equation 1 Mixed layer heat budget. Term I represents the impact of surface heat flux (Q) anomalies on the temperature tendency. Term II represents the impact of mixed layer depth (h) anomalies and is large in the North Pacific during boreal summer. Term III is small. Term IV quantifies the influence of entrainment from below. Equation 1 Mixed layer heat budget. Term I represents the impact of surface heat flux (Q) anomalies on the temperature tendency. Term II represents the impact of mixed layer depth (h) anomalies and is large in the North Pacific during boreal summer. Term III is small. Term IV quantifies the influence of entrainment from below. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590171427249-MY1EXDZ2TEOYMD2FQP6C/bams_figure1_web.png Home - Climate Change and Marine Heatwaves Figure 1 Summer MLD trends in observations (c-d) and climate models forced with historical+RCP8.5 radiative forcing (e-h). https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590179562530-MTA1QAWPCOVL29XTT6TX/bams_figure2.png Home - Climate Change and Marine Heatwaves Figure 2 (a) Upper: Summer MLD anomalies averaged in the red box in Fig. 1c for two sets of observational reanalyses (red/orange), CESM1-LE (black/gray), 13 CMIP5 models (blue). Shading represents full range (minimum-to-maximum) of values for each respective ensemble. Lower: MLD forcing terms calculated for CESM1-LE ensemble mean. (b) Probability distributions of CESM1-LE MLD anomalies averaged in same red box in the “present” (2005-2034; blue) and “future” (2070-2099; red) . Vertical black lines show the summer 2019 MLD anomalies in GODAS ocean reanalysis and Argo gridded data. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590182157273-YIJPJKJU9XAMICINICHN/bams_figureS2_web.png Home - Climate Change and Marine Heatwaves Figure 3 The contributions of Terms I and II from Eq. (1) to the mixed layer temperature as calculated in CESM1-LE, given a surface heat flux anomaly (Q’) and MLD anomaly (h’) of the same magnitude as observed summer 2019 in the Northeast Pacific (red box, Fig 1c). The CESM1-LE projected change in the mean surface heat flux and mean MLD were used in a 30-yr sliding window for Qbar and hbar, respectively. https://www.dillonamaya.com/home/bottom-marine-heatwaves monthly 0.5 2023-03-23 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/8598beb9-0ef9-41ed-a4ea-06d574458b07/avg_int.png https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/d9eff4b7-df32-4c72-9732-3ee26374dc99/avg_dur.jpg https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/76815431-36ab-4e4e-b44d-e62d97b33ec2/avg_int_diff.png https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/68a680b7-10f2-42fc-90b0-ae0620cd9663/avg_dur_diff.png https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/7e5e6b40-c525-4bdb-a074-5150aeec77f7/sync_vs_MLD.png https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/e9dee63e-82c6-4e58-b114-4d1763011912/MLD_schematic.png https://www.dillonamaya.com/home/blob monthly 0.5 2022-03-18 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590448063227-JVM1F02YF3XQ3TVV6H7P/sst_day_JJA.png Home - The Return of the Blob - Equation 1 Mixed layer heat budget. Term I represents the impact of surface heat flux (Q) anomalies on the temperature tendency. Term II represents the impact of mixed layer depth (h) anomalies and is large in the North Pacific during boreal summer. Term III is small. Term IV quantifies the influence of entrainment from below. Figure 1 The Blob 2.0. Observed sea surface temperature anomalies (˚F) averaged for JJA 2019. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590448385345-CMULJC8IK6G07IK7YDDT/ncomm_fig2_edit.png Home - The Return of the Blob Figure 2 Observed sea level pressure (values) anomalies (shading) averaged for JJA 2019. Black contours represent the summertime climatological SLP values. Red contours are JJA 2019 SST anomalies starting at 1˚C with a 0.5˚C interval. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590259636555-FIBOZYXFODU7MZYD2C0Y/ncomm_fig5.png Home - The Return of the Blob Figure 3 Atmospheric model (AGCM) simulations. (a)-(c) AGCM ensemble mean JJA 2019 sea level pressure anomalies (hPA; shading) for Global SST-forced, Tropical SST-forced, and North Pacific SST-forced experiments, respectively. (b)-(f) Single “Best Member” match for each ensemble of simulations based on pattern correlation of model and observations in black box (see Fig. 2). https://www.dillonamaya.com/home/pmmreview monthly 0.5 2020-05-25 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590440476080-BYTJFEO6DJQ3DAJ3JL5U/pmm_review.png Home - Pacific Meridional Mode Review Figure 1 Schematic illustration of the different physical mechanisms that connect the NPMM to ENSO. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590438598202-QU9PX1Q2YDBCPQ5EW568/review_Fig1.jpg Home - Pacific Meridional Mode Review Figure 2 Lagged regressions of seasonally averaged SST and surface wind anomalies on NPMM SST time series calculated from a Maximum Covariance Analysis. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590440126505-O0CFKC3UZI153KD1YLEQ/review_Fig2.png Home - Pacific Meridional Mode Review Figure 3 Same as Fig. 1, except lagged regressions of surface wind and latent heat flux anomalies (negative = ocean warming). https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1590440258684-8XBZ28U7IWR9UH3EFHJW/review_Fig3.jpg Home - Pacific Meridional Mode Review Figure 4 First Joint EOF of SST (shading) and precipitation (contours; green = wetter) anomalies in the North Pacific using ERA5 reanalysis. Quivers are surface wind anomalies. https://www.dillonamaya.com/home/s2skelvin monthly 0.5 2022-03-18 https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/efb63d3e-63eb-4230-a353-bdf7274c99b6/Screen+Shot+2022-03-18+at+11.37.53+AM.jpg Home - S2S Sea Level Forecasts - Make it stand out Figure 1 Forecast skill of coastal SSH in the South, Central, and North CCS. Red stipples indicate significant skill over persistence. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/9273495d-f667-403c-844c-92053c73bad8/kelvin_wave_glorys_ssha_daily_may2_97EN.gif Home - S2S Sea Level Forecasts Figure 2 Sea surface height anomalies during the development of the 1997-1998 El Niño. Animation depicts a Kelvin wave as it travels from the equatorial Pacific up the coastline of North America. Data is from the GLORYS ocean reanlaysis. https://images.squarespace-cdn.com/content/v1/5ec6b4007d9e7005e044ff01/1b86ecdc-83a7-46ad-a1bc-944155f75fc6/Screen+Shot+2022-03-18+at+12.51.32+PM.png Home - S2S Sea Level Forecasts Figure 3 Weekly forecast skill composited on the intensity of coastal Kelvin wave conditions at forecast initialization. Solid lines = dynamical forecasts. Dashed lines = persistence forecasts. Filled circles = dynamical forecast skill is significantly better than persistence.