Download or read book On the Relationship Between the Length of Season and Tropical Cyclone Activity in the North Atlantic Basin During the Weather Satellite Era 1960 2013 written by Robert M. Wilson and published by . This book was released on 2014 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tropical Cyclone Activity in the North Atlantic Basin During the Weather Satellite Era 1960 2014 written by Robert M. Wilson and published by . This book was released on 2016 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistical Aspects of North Atlantic Basin Tropical Cyclones During the Weather Satellite Era 1960 2013 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-22 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: A tropical cyclone is described as a warm-core, nonfrontal, synoptic-scale system that originates over tropical or subtropical waters, having organized deep convection and closed surface wind circulation (counterclockwise in the Northern Hemisphere) about a well defined center. When its sustained wind speed equals 34-63 kt, it is called a tropical (or subtropical) storm and is given a name (i.e., alternating male and female names, beginning in 1979); when its sustained wind speed equals 64-95 kt, it is called a hurricane (at least in the Eastern Pacific and North Atlantic basin); and when its sustained wind speed equals 96 kt or higher, it is called an intense or major hurricane (i.e., categories 3-5 on the Saffir-Simpson Hurricane Wind Scale). Although tropical cyclones have been reported and described since the voyages of Columbus, a detailed record of their occurrences extends only from 1851 to the present, with the most reliable portion extending only from about 1945 to the present, owing to the use of near-continuous routine reconnaissance aircraft monitoring flights and the use of satellite imagery (beginning in 1960; see Davis). Even so, the record may still be incomplete, possibly missing at least one tropical cyclone per yearly hurricane season, especially prior to the use of continuous satellite monitoring. In fact, often an unnamed tropical cyclone is included in the year-end listing of events at the conclusion of the season, following post-season analysis (e.g., as happened in 2011 and 2013, each having one unnamed event). In this two-part Technical Publication (TP), statistical aspects of the North Atlantic basin tropical cyclones are examined for the interval 1960-2013, the weather satellite era. Part 1 examines some 25 parameters of tropical cyclones (e.g., frequencies, peak wind speed (PWS), accumulated cyclone energy (ACE), etc.), while part 2 examines the relationship of these parameters against specific climate-related factors. These studies are a
Download or read book On the Current Trend of Tropical Cyclone Activity and the Lengthening of the Tropical Cyclone Season in the North Atlantic Basin written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-23 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this TP, the trend in North Atlantic basin TC activity, especially as related to the determination of the length of season (LOS) and its possible association with warming surface-air and sea-surface temperature, is revisited. In particular, examined are: (1) the trend in TC activity for the yearly intervals 1945-1965, 1966-1994, and 1995-2012 for TCs having duration NSD greater or equal to 0.25 day, less than 2 days, greater than or equal to 2 days, greater than or equal to 4 days, and greater than or equal to 8 days; (2) the latitudinal and longitudinal genesis locations of the short-lived TC (defined herein as those TCs having duration NSD less than 2 days) for the three yearly intervals; (3) the first storm day (FSD), last storm day (LSD), and LOS based on TCs having duration NSD greater than or equal to 0.25 day and NSD greater than or equal to 2 days; (4) the relationship between FSD, LSD, and LOS for TCs having duration NSD greater than or equal to 0.25 day and NSD greater than or equal to 2 days; (5) the surface-air and sea-surface temperature, wind, and North Atlantic Oscillation (NAO) during the interval 1945-2012; (6) the relationship of FSD, LSD, and LOS against surface-air and sea-surface temperature, wind, and the NAO; (7) the relationship of TC activity against surface-air and sea-surface temperature, wind, and the NAO; and (8) the relationship of TC activity against FSD and LOS. This TP represents an update to an earlier study by Wilson concerning the length of the yearly hurricane season. Wilson, Robert M. Marshall Space Flight Center TROPICAL STORMS; CYCLONES; ATLANTIC OCEAN; TRENDS; SEA SURFACE TEMPERATURE; ATMOSPHERIC TEMPERATURE
Download or read book Statistical aspects of North Atlantic basin tropical cyclones during the weather satellite era 1960 2013 written by Robert M. Wilson and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North Atlantic basin tropical cyclone activity in relation to temperature and decadal length oscillation patterns written by Robert M. Wilson and published by . This book was released on 2009 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Extended Forecast of the Frequencies of North Atlantic Basin Tropical Cyclone Activity for 2009 written by National Aeronaut Administration (Nasa) and published by . This book was released on 2020-08-07 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extended forecast of the frequencies for the 2009 North Atlantic basin hurricane season is presented. Continued increased activity during the 2009 season with numbers of tropical cyclones, hurricanes, and major hurricanes exceeding long-term averages are indicated. Poisson statistics for the combined high-activity intervals (1950-1965 and 1995-2008) give the central 50% intervals to be 9-14, 5-8, and 2-4, respectively, for the number of tropical cyclones, hurricanes, and major hurricanes, with a 23.4% chance of exceeding 14 tropical cyclones, a 28% chance of exceeding 8 hurricanes, and a 31.9% chance of exceeding 4 major hurricanes. Based strictly on the statistics of the current high-activity interval (1995-2008), the central 50% intervals for the numbers of tropical cyclones, hurricanes, and major hurricanes are 12-18, 6-10, and 3-5, respectively, with only a 5% chance of exceeding 23, 13, or 7 storms, respectively. Also examined are the first differences in 10-yr moving averages and the effects of global warming and decadal-length oscillations on the frequencies of occurrence for North Atlantic basin tropical cyclones. In particular, temperature now appears to be the principal driver of increased activity and storm strength during the current high-activity interval, with near-record values possible during the 2009 season. Wilson, Robert M. Marshall Space Flight Center NASA/TP-2009-215741, M-1253 TROPICAL STORMS; CYCLONES; HURRICANES; FORECASTING; EL NINO; GLOBAL WARMING; STORMS; PERIODIC VARIATIONS; ATLANTIC OCEAN; OSCILLATIONS
Download or read book An Estimate of the North Atlantic Basin Tropical Cyclone Activity for the 2010 Hurricane Season written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-14 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates are presented for the tropical cyclone activity expected for the 2010 North Atlantic basin hurricane season. It is anticipated that the 2010 season will be more active than the 2009 season, reflecting increased frequencies more akin to that of the current more active phase that has been in vogue since 1995. Averages (+/- 1 sd) during the current more active phase are 14.5+/-4.7, 7.8+/-3.2, 3.7+/-1.8, and 2+/- 2, respectively, for the number of tropical cyclones (NTC), the number of hurricanes (NH), the number of major hurricanes (NMH), and the number of United States (U.S.) land-falling hurricanes (NUSLFH). Based on the "usual" behavior of the 10-yma parametric first differences, one expects NTC = 19+/-2, NH = 14+/-2, NMH = 7+/-2, and NUSLFH = 4+/-2 for the 2010 hurricane season; however, based on the "best guess" 10-yma values of surface-air temperature at the Armagh Observatory (Northern Ireland) and the Oceanic Nino Index, one expects NTC > or equals 16, NH > or equals 14, NMH > or equals 7, and NUSLFH > or equals 6. NASA/TP-2010-216429, M-1278 Wilson, Robert M. Marshall Space Flight Center
Download or read book On the Current Trend of Tropical Cyclone Activity and the Lengthening of the Tropical Cyclone Season in the North Atlantic Basin written by Robert M. Wilson and published by . This book was released on 2013 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Download or read book Using Downscaled Global Climate Models to Perform a Long Term Analysis of North Atlantic Tropical Cyclones and Their Impacts on Coastal Inundation to New York City written by Andra Reed and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In a changing climate, the impact of tropical cyclones on the United States Atlantic and Gulf Coasts will be affected by both how intense and how frequent these storms become. The observational record of tropical cyclones in the North Atlantic basin is too short (1851 CE present) to accurately assess long-term trends of low-frequency variability in storm activity. To overcome this limitation, I use synthetic tropical cyclone data sets for the North Atlantic basin downscaled from Coupled Model Intercomparison Project Phase 5 (CMIP5) models; driving climate conditions span 850 CE 2005 CE. Using these long-term synthetic tropical cyclone data sets, I investigate the relationship between power dissipation and ocean temperature metrics, as well as the relationship between basin-wide and landfalling tropical cyclone count statistics over the past millennium. Contrary to previous studies, I find only a very weak relationship between power dissipation and main development region sea surface temperature in the Atlantic basin. Consistent with previous studies, I find that basin-wide and landfalling tropical cyclone counts are significantly correlated with one another, lending further support for the use of paleohurricane landfall records to infer long-term basin-wide tropical cyclone trends. Additionally, I investigate the changing risk of inundation to the United States Atlantic coast, dependent upon both storm surges during tropical cyclones, and the rising sea levels on which those surges occur. Focusing our study on New York City, I compare pre-anthropogenic era (850 CE 1800 CE) and anthropogenic era (1970 CE 2005 CE) storm-surge model results, exposing links between increased rates of sea-level rise and storm flood heights. I find that mean flood heights increased by ~1.24 m at The Battery in New York City (due mainly to sea level rise) from ~AD 850 to the anthropogenic era, a result that is significant at the 99% confidence level. Additionally, changes in tropical cyclone characteristics have led to increases in the extremes of the types of storms that create the largest storm surges for New York City. As a result, flood risk has greatly increased for the region; for example, the 500 year return period for a ~2.25 m flood height during the pre-anthropogenic era has decreased to less than 25 years in the anthropogenic era. Finally, as sea levels continue to rise over the next several centuries, we expect additional risk of coastal flooding for the United States Atlantic Coast in general, and for New York City in particular, associated with storm surge events. I thus turn to an analysis of future projections of storm surge heights in New York City through the year 2300 in the context of my long-term historical analysis. Using CMIP5 model projections that extend to 2300 CE, I generate large datasets of downscaled tropical cyclones. Combining storm surge model results with several potential sea level rise scenarios for the New York City region through the year 2300, I find greatly increased risk of flooding for the metropolitan area. I show that mean flood heights are projected to increase by ~0.24 to ~0.97 meters across three CMIP5 models through the year 2100. By 2300, mean flood heights could increase by as much as ~2.85- ~4.99 meters. These results are significant at the 99% confidence level. I show that, although it is possible that shifting storm tracks could spare NYC from increases in severe storm surge heights in coming centuries, rising relative sea levels are likely to greatly increase overall flood heights, regardless of changes in TCs and their resultant storm-surge heights. Results from this research indicate the impacts of climate change on coastal inundation, and call for advanced risk management strategies in our coastal communities, especially in the New York City region.
Download or read book Attribution of Extreme Weather Events in the Context of Climate Change written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-07-28 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: As climate has warmed over recent years, a new pattern of more frequent and more intense weather events has unfolded across the globe. Climate models simulate such changes in extreme events, and some of the reasons for the changes are well understood. Warming increases the likelihood of extremely hot days and nights, favors increased atmospheric moisture that may result in more frequent heavy rainfall and snowfall, and leads to evaporation that can exacerbate droughts. Even with evidence of these broad trends, scientists cautioned in the past that individual weather events couldn't be attributed to climate change. Now, with advances in understanding the climate science behind extreme events and the science of extreme event attribution, such blanket statements may not be accurate. The relatively young science of extreme event attribution seeks to tease out the influence of human-cause climate change from other factors, such as natural sources of variability like El Niño, as contributors to individual extreme events. Event attribution can answer questions about how much climate change influenced the probability or intensity of a specific type of weather event. As event attribution capabilities improve, they could help inform choices about assessing and managing risk, and in guiding climate adaptation strategies. This report examines the current state of science of extreme weather attribution, and identifies ways to move the science forward to improve attribution capabilities.
Download or read book Tropical Cyclones of the North Atlantic Ocean 1871 1992 written by and published by . This book was released on 1993 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Estimate of the North Atlantic Basin Tropical Cyclone Activity for the 2010 Hurricane Season written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-22 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates are presented for the tropical cyclone activity expected for the 2010 North Atlantic basin hurricane season. It is anticipated that the 2010 season will be more active than the 2009 season, reflecting increased frequencies more akin to that of the current more active phase that has been in vogue since 1995. Averages (+/- 1 sd) during the current more active phase are 14.5+/-4.7, 7.8+/-3.2, 3.7+/-1.8, and 2+/- 2, respectively, for the number of tropical cyclones (NTC), the number of hurricanes (NH), the number of major hurricanes (NMH), and the number of United States (U.S.) land-falling hurricanes (NUSLFH). Based on the "usual" behavior of the 10-yma parametric first differences, one expects NTC = 19+/-2, NH = 14+/-2, NMH = 7+/-2, and NUSLFH = 4+/-2 for the 2010 hurricane season; however, based on the "best guess" 10-yma values of surface-air temperature at the Armagh Observatory (Northern Ireland) and the Oceanic Nino Index, one expects NTC > or equals 16, NH > or equals 14, NMH > or equals 7, and NUSLFH > or equals 6. Wilson, Robert M. Marshall Space Flight Center HURRICANES; SURFACE TEMPERATURE; TROPICAL STORMS; CYCLONES; ATMOSPHERIC TEMPERATURE; OBSERVATORIES; ESTIMATES; ATLANTIC OCEAN; UNITED STATES
Download or read book Climate Variability and Tropical Cyclone Activity written by Pao-Shin Chu and published by Cambridge University Press. This book was released on 2022-03-10 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive summary of tropical cyclone variability at time scales from intraseasonal and interannual to interdecadal and centennial. Major climate oscillations (Madden-Julian, El Niño, Atlantic Meridional Mode and Pacific Decadal) are covered, and their impacts on tropical cyclone activity in the Pacific and Atlantic oceans are discussed.
Download or read book An Estimate of the North Atlantic Basin Tropical Cyclone Activity for the 2010 Hurricane Season written by Robert M. Wilson and published by . This book was released on 2010 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Extended Forecast of the Frequencies of North Atlantic Basin Tropical Cyclone Activity for 2009 written by Robert M. Wilson and published by . This book was released on 2009 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
