From eoas-seminar at lists.fsu.edu Wed May 1 08:57:51 2019 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 1 May 2019 12:57:51 +0000 Subject: [Eoas-seminar] REMINDER: Meteorology PhD Defense for Ruikai Yan, Wednesday, May 1, 2019, 10:30 PM, LOV353 Message-ID: Meteorology Seminar Ruikai Yan PhD Meteorology Candidate Title: AN ABSOLUTE ANGULAR MOMENTUM BASED ANALYTICAL MODEL FOR TROPICAL CYCLONE RADIAL WIND PROFILES Major Professor: Dr. Ming Cai Date: Wednesday, May 1st Time: 10:30 AM Location: Werner A. Baum Seminar Room (353 Love Building) (Please join us for refreshments served outside room 353 Love @ 10:00 AM) ABSTRACT The ability to construct radial wind profiles of tropical cyclones (TC) from limited observations is crucial to the initialization of TC simulations and predictions. A minimum requirement for constructing a reasonable radial wind profile is a high skill in estimating one of the four TC characteristic parameters, namely maximum wind speed (Vmax), radius of maximum wind speed (rmax), 17 ms?1 wind speed (V17), and radius of 17 ms?1 wind (r17) from the other three. In this study, we put froth an absolute angular momentum (AAM) based analytical model for inferring the radial profile beyond the rmax. An observed AAM loss function L is defined as the ratio of the observed AAM at r17 to that at rmax. We parameterize the observed AAM loss function L as a function of these four parameters and environmental factors. The combination of analytical expressions of the AAM loss L and the AAM at r17 and rmax, gives us the analytical model. This observation-physics based model allows us to construct radial profiles of TCs under four different configurations from observations of these four parameters. Specifically, we can use Vmax and rmax as inputs for solving (a) the tangential velocity profile of a TC from rmax to r17 or (b) the TC?s radius for a given tangential velocity from Vmax to V17. Alternatively, we can use V17 and r17 as inputs for solving (c) the tangential velocity profile of a TC from r17 to rmax or (d) the TC?s radius for a given tangential velocity from V17 to Vmax. This enables us to acquire radial wind profiles when one of the four parameters is not available in observations. The degree of consistency of (a) versus (c) and (b) versus (c) is an indicator of the robustness of the model. We evaluate the skill of our model using 4491 records of 197 named TCs derived from the Extended Best Track Dataset for the period of 1998-2016, and find that the mean errors in estimating Vmax, rmax, V17, and r17 are, respectively, 5.95 m/s, 25.37 km, 3.33 m/s, and 57.67 km. The newly developed analytical model has several advantages over widely recognized existing TC wind profile models. Most empirical models, for example, are designed to construct radial wind profiles in only one of the four configurations. While other physics-based models have mean errors in Vmax, rmax, and r17 that are larger by several factors. Furthermore, our model can yield physically realistic radial wind profiles and solutions of TC characteristic parameters (meaning that for radial wind profiles, wind velocity decreases monotonically from rmax to r17, and for solutions, Vmax > V17 > 0 and r17 > rmax > 0) for all 4491 TC records, regardless of which of the four con- figurations is chosen. For more than 10% of the TC records, however, other physics-based models have radial wind profiles that are discrete or increases from the inside to outside, and have solutions that either do not exist or are not physical under certain configurations. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1017 Academic Way, 410 Love Building (Meteorology) Tallahassee, FL 32306 850-644-8582 -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri May 10 06:35:28 2019 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 10 May 2019 10:35:28 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Charles Wirks, Thursday, May 23, 2019, 1:00 PM, LOV353 Message-ID: Meteorology Seminar Charles Kenneth Wirks M.S. Meteorology Candidate Title: IMPACTS OF SUGAR CANE AGRICULTURAL FIRES ON AIR QUALITY IN SOUTHERN FLORIDA: MODELING PARTICULATE MATTER WITH THE HYSPLIT ATMOSPHERIC DISPERSION MODEL. Major Professor: Dr. Christopher Holmes Date: May 23, 2019 Time: 1:00 - 2:30 pm Location: Werner A. Baum Seminar Room (353 Love Building) (Please join us for refreshments served outside room 353 Love @ 12:30 PM) ABSTRACT The state of Florida approves annually approximately [cid:image001.png at 01D506FA.8E643460] hectares ([cid:image002.png at 01D506FA.8E643460] acres) of land of prescribed fires and, if the meteorology is not monitored properly, the production of particulate matter (PM) may cause health issues for neighboring communities. Due to the high contaminated water and oil content in sugarcane and saccharine crops, complete combustion is rarely achieved leading to the production of abundant amounts of concentrated PM. PM smaller than 2.5 micron in diameter ([cid:image003.png at 01D506FA.8E643460]), may have adverse effects on respiratory and cardiovascular health as shown in previous studies. Excessive exposure to [cid:image003.png at 01D506FA.8E643460] may lead to diseases such as respiratory distress, asthma, heart disease, and cancer. In this study, the distribution and impacts of [cid:image003.png at 01D506FA.8E643460] caused by prescribed burns of sugarcane crops during the harvest season is assessed. Results are evaluated against wind, precipitation, humidity observations, emission factors, locations of fires as reported by Florida Forestry Services (FFS), and observed concentration values reported by the Environmental Protection Agency (EPA). The results are then evaluated to identify populated areas that are at high risk of experiencing the impacts of [cid:image003.png at 01D506FA.8E643460] exposure. This research seeks to evaluate the air quality due to [cid:image003.png at 01D506FA.8E643460] loading and quantify the excess of mortality contributed by said [cid:image003.png at 01D506FA.8E643460] . Archived data of prescribed fires in Florida were used with records from 2008-2015 from the FFS open burn authorizations (OBA). Samples of concentration values are used during sugar cane harvest seasons which occur from Fall (generally October) and last until Winter (generally March). The results from HYSPLIT atmospheric dispersion model shows an under estimation in the production of [cid:image003.png at 01D506FA.8E643460] . This is due to the uncertainties and variability Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1017 Academic Way, 410 Love Building (Meteorology) Tallahassee, FL 32306 850-644-8582 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 526 bytes Desc: image001.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image002.png Type: image/png Size: 527 bytes Desc: image002.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image003.png Type: image/png Size: 483 bytes Desc: image003.png URL: From eoas-seminar at lists.fsu.edu Fri May 17 10:25:18 2019 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 17 May 2019 14:25:18 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Charles Wirks, Thursday, May 23, 2019, 1:00 PM, LOV353 Message-ID: Meteorology Seminar Charles Kenneth Wirks M.S. Meteorology Candidate Title: IMPACTS OF SUGAR CANE AGRICULTURAL FIRES ON AIR QUALITY IN SOUTHERN FLORIDA: MODELING PARTICULATE MATTER WITH THE HYSPLIT ATMOSPHERIC DISPERSION MODEL. Major Professor: Dr. Christopher Holmes Date: May 23, 2019 Time: 1:00 - 2:30 pm Location: Werner A. Baum Seminar Room (353 Love Building) (Please join us for refreshments served outside room 353 Love @ 12:30 PM) ABSTRACT The state of Florida approves annually approximately [cid:image001.png at 01D50C9A.D2797610] hectares ([cid:image002.png at 01D50C9A.D2797610] acres) of land of prescribed fires and, if the meteorology is not monitored properly, the production of particulate matter (PM) may cause health issues for neighboring communities. Due to the high contaminated water and oil content in sugarcane and saccharine crops, complete combustion is rarely achieved leading to the production of abundant amounts of concentrated PM. PM smaller than 2.5 micron in diameter ([cid:image003.png at 01D50C9A.D2797610]), may have adverse effects on respiratory and cardiovascular health as shown in previous studies. Excessive exposure to [cid:image003.png at 01D50C9A.D2797610] may lead to diseases such as respiratory distress, asthma, heart disease, and cancer. In this study, the distribution and impacts of [cid:image003.png at 01D50C9A.D2797610] caused by prescribed burns of sugarcane crops during the harvest season is assessed. Results are evaluated against wind, precipitation, humidity observations, emission factors, locations of fires as reported by Florida Forestry Services (FFS), and observed concentration values reported by the Environmental Protection Agency (EPA). The results are then evaluated to identify populated areas that are at high risk of experiencing the impacts of [cid:image003.png at 01D50C9A.D2797610] exposure. This research seeks to evaluate the air quality due to [cid:image003.png at 01D50C9A.D2797610] loading and quantify the excess of mortality contributed by said [cid:image003.png at 01D50C9A.D2797610] . Archived data of prescribed fires in Florida were used with records from 2008-2015 from the FFS open burn authorizations (OBA). Samples of concentration values are used during sugar cane harvest seasons which occur from Fall (generally October) and last until Winter (generally March). The results from HYSPLIT atmospheric dispersion model shows an under estimation in the production of [cid:image003.png at 01D50C9A.D2797610] . This is due to the uncertainties and variability Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1017 Academic Way, 410 Love Building (Meteorology) Tallahassee, FL 32306 850-644-8582 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 526 bytes Desc: image001.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image002.png Type: image/png Size: 527 bytes Desc: image002.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image003.png Type: image/png Size: 483 bytes Desc: image003.png URL: From eoas-seminar at lists.fsu.edu Thu May 23 07:49:24 2019 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 23 May 2019 11:49:24 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Charles Wirks, Thursday, May 23, 2019, 1:00 PM, LOV353 Message-ID: Meteorology Seminar Charles Kenneth Wirks M.S. Meteorology Candidate Title: IMPACTS OF SUGAR CANE AGRICULTURAL FIRES ON AIR QUALITY IN SOUTHERN FLORIDA: MODELING PARTICULATE MATTER WITH THE HYSPLIT ATMOSPHERIC DISPERSION MODEL. Major Professor: Dr. Christopher Holmes Date: May 23, 2019 Time: 1:00 - 2:30 pm Location: Werner A. Baum Seminar Room (353 Love Building) (Please join us for refreshments served outside room 353 Love @ 12:30 PM) ABSTRACT The state of Florida approves annually approximately [cid:image001.png at 01D5113C.090C03F0] hectares ([cid:image002.png at 01D5113C.090C03F0] acres) of land of prescribed fires and, if the meteorology is not monitored properly, the production of particulate matter (PM) may cause health issues for neighboring communities. Due to the high contaminated water and oil content in sugarcane and saccharine crops, complete combustion is rarely achieved leading to the production of abundant amounts of concentrated PM. PM smaller than 2.5 micron in diameter ([cid:image003.png at 01D5113C.090C03F0]), may have adverse effects on respiratory and cardiovascular health as shown in previous studies. Excessive exposure to [cid:image003.png at 01D5113C.090C03F0] may lead to diseases such as respiratory distress, asthma, heart disease, and cancer. In this study, the distribution and impacts of [cid:image003.png at 01D5113C.090C03F0] caused by prescribed burns of sugarcane crops during the harvest season is assessed. Results are evaluated against wind, precipitation, humidity observations, emission factors, locations of fires as reported by Florida Forestry Services (FFS), and observed concentration values reported by the Environmental Protection Agency (EPA). The results are then evaluated to identify populated areas that are at high risk of experiencing the impacts of [cid:image003.png at 01D5113C.090C03F0] exposure. This research seeks to evaluate the air quality due to [cid:image003.png at 01D5113C.090C03F0] loading and quantify the excess of mortality contributed by said [cid:image003.png at 01D5113C.090C03F0] . Archived data of prescribed fires in Florida were used with records from 2008-2015 from the FFS open burn authorizations (OBA). Samples of concentration values are used during sugar cane harvest seasons which occur from Fall (generally October) and last until Winter (generally March). The results from HYSPLIT atmospheric dispersion model shows an under estimation in the production of [cid:image003.png at 01D5113C.090C03F0] . This is due to the uncertainties and variability Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1017 Academic Way, 410 Love Building (Meteorology) Tallahassee, FL 32306 850-644-8582 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 526 bytes Desc: image001.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image002.png Type: image/png Size: 527 bytes Desc: image002.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image003.png Type: image/png Size: 483 bytes Desc: image003.png URL: