(2016) discussed several limitations of focusing on such an index of major-hurricane U.S. landfalls, noting the arbitrariness of several aspects of the index. (2018) conclude that internal variability (the interdecadal Pacific oscillation) contributed to the lower TC frequency observed in the western North Pacific basin after 1998. We'd need to see the code to be able to troubleshoot, assuming that the issue isn't entirely related to the Trusted Location issue. Every measurement is subject to some uncertainty. official It will do this about five times and stop.     myDept = 0 The first author acknowledges particularly helpful comments and advice from A. Sobel regarding the type I vs. type II error perspective, which led to its adoption into the assessment. (2011) is not an explicit TC simulation study and no clear demonstration was made that the TC intensity changes were highly unusual compared to natural variability. (2016a) find a nominally positive trend in western North Pacific LMI (1980–2005) in CMIP5 historical runs, but it is weaker than observed, and not statistically significant in the model ensemble. (2016) infer an anthropogenic contribution to high accumulated cyclone energy (ACE) in the western North Pacific in 2015. Lau and Zhou’s (2012) analysis of the relatively short (two decades) available satellite-based TC rainfall data does not find conclusive evidence for detectable anthropogenic influence on TC rainfall. (2013) reported very strong century-scale increases in typhoon-related rainfall rates over Korea during 1904–2008, although their study does not present enough methodology details for a careful assessment. © 2019 American Meteorological Society. Hello All, 2010, 2015). From the viewpoint of type II error avoidance, one of the above changes (decrease in severe landfalling TCs in eastern Australia), was rated as detectable, though not attributable to anthropogenic forcing (9 of 11 authors), with one dissenting author expressing reservations about the historical data quality in this case. Now, 2013) concluded that there was medium confidence that increased TC activity in the North Atlantic since the 1970s resulted partly from reduced aerosol forcing but that it was uncertain whether any past changes in TC activity were outside the range of natural variability (see online supplemental material: https://doi.org/10.1175/BAMS-D-18-0189.2). However, they did not assess whether the change was caused by anthropogenic forcing, nor compared the trend to climate models’ internal variability. A summary of the distribution of author opinion on the various potential detection and attribution statements discussed in the “Case studies—Assessment of detection and attribution” section is provided in Table 1. End If. Climate Science Special Report: Fourth National Climate Assessment, The increasing intensity of the strongest tropical cyclones, Environmental factors affecting tropical cyclone power dissipation, Assessing the present and future probability of Hurricane Harvey’s rainfall, Economic losses from US hurricanes consistent with an influence from climate change, New evidence for a relationship between Atlantic tropical cyclone activity and African dust outbreaks, Arabian Sea tropical cyclones intensified by emissions of black carbon and other aerosols, Homogeneous record of Atlantic hurricane surge threat since 1923, Changes in hurricanes from a 13-year convection-permitting pseudo-global warming simulation, On the classification of extreme Atlantic hurricanes utilizing mid-twentieth-century monitoring capabilities, Solar forcing over the last 1500 years and Australian tropical cyclone activity, Australian tropical cyclone activity lower than at any time over the past 500-1500 years, The frequency and duration of U.S. hurricane droughts, The arbitrary definition of the current Atlantic major hurricane landfall drought, Decadal changes in tropical cyclone activity over the western North Pacific in the late 1990s, Good practice guidance paper on detection and attribution related to anthropogenic climate change, Expert Meeting on Detection and Attribution Related to Anthropogenic Climate Change, Recent intense hurricane response to global climate change, Mapping sea-level change in time, space, and probability, Temperature and cyclones strongly associated with economic production in the Caribbean and Central America, Adaptation to cyclone risk: Evidence from the global cross-section, Trade-off between intensity and frequency of global tropical cyclones, Climate mechanism for stronger typhoons in a warmer world, Tropical cyclone simulation and response to CO2 doubling in the GFDL CM2.5 high-resolution coupled climate model, Large increase in heavy rainfall associated with tropical cyclone landfalls in Korea after the late 1970s, Extremely intense hurricanes: Revisiting Webster et al.