ML19209B379
| ML19209B379 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 07/09/1979 |
| From: | Goll J Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML093630839 | List: |
| References | |
| NUDOCS 7910090599 | |
| Download: ML19209B379 (4) | |
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ESTIMATIO!! GF CONCENTRATIONS FOR OVERWATER RECEF T.." "CM A LAND-BASED SOURCE by John Goll U. 5. Nuclear Regulatory Commission Washington, D. C.
To estimate concentrations # rom land-based sources for overwater locations, instrumanted data are usually available only from inland locations.
Using such land-based data, I describe a Gaussian dispersion model which should not underpredict concentrations for most meteorological conditions.
The model uses land-derived plume growth and wind speed values for locations between the inland source and the coastline.
Beyor.d the coastline the model assumr:s plume growth representative of overwater flow.
I relate the model's over-or under-e timation of overwater concentrations to atmos-pheric conditions and compar.; the model's concentrations with those made usino only[iand-basedandonlywater-basedplumegrowthvalues.
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ESTI.'tATION OF CONCENTRATIONS FOR n m "6TER RECEPTORS FROM A LAND-BASED SOURCE by John Goll U. S. Nuclear Regulatory Commission Washington, D. C.
Estimates of effluent concentrations from land-based near-ground-level sources need often be made for overwater locations.
Data to classify the atmosph7eic stability and wind speed are usually only available from land-based instrumentation. Using such overland data, I describe a Gaussian dis-persion model designed to not underpredict surface concentrations for most meteorological conditions.
I first describe the changes of the dispersive capability of air which flows from land to water.
I consider such parameters as overland fetch, air-water-land temperature differences, change of surface roughness, and airflow meandering.
To estimate such parameters and those needed to calculate con-centrations, I describe what data are readily available from existing moni-toring programs and assess the practicality of collecting other data. With this insight and with a criterion that the model should nct underpredict surface concentrations for most atmospheric conditions, I select those parameters which are easily measured or estinited. For each selected parameter I dis-cuss how its value changes going from land to over water during expected diurnal and annual atmospheric conditions.
For locations from the source to the coastline, the model uses Pasquill-Gifford plume growth parameters, which are based on overland field tests, and wind speed and direction data from an inland location. Although air which flows from one surface to another must travel some distance over the new surface to be totally influenced by it, this model assumes that the air 1116 186
- ... l*, 9 characteristics change i.u.ediately at the coastline to that of overwater air. For overwater travel the model's plume grows according to relationships found by Brookhaven National Laboratory in recent overwater field dispersion tests.
For a number of source-to-coastline fetches, I compare concentrations calculated by this model with those made using only land-based or overwater-based plume growth values. For the range of expected atmospheric conditions, I summarize those conditions for which the model may underpredict overwater concentrations.
I recommend what parameters should be included in a more realistic model and what type of practical measurements would best estimate these parameters.
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l C:" 9 rer crs Secc:-d Cafercnce on Cocstol Meteorology, h a t :- - ?? Abmery 1,1980, les Angeles, Calif The Ornnd Confttence en Coastal Meteorology, sponsored by the American Mcaturological Society, will be held 30 January-l February 1%0 in conjunction with the 60th AMS
.bmual lletting (28-31 Januar in Los Angeles, Calif. The program will be organized by the AMS Committee on 5 fete-crology of the Coastal Zone and by West Coast scientists. The conference will be complemented by and held simul-taneously with the Third Conference on Ocean Atmosphere Interaction; this will permit interaction with the American Sc.icty of Limnology and Oceanography Winter Meeting (31 Januar)-4 February) and the International Symposium on Coastal Upwciling (4-8 February) to be held in Ims ; Angeles. A joint session with the Third Conference on Ocean-Atmosphere Interaction is planned on the topic of " Air Sea Interaction in the Coastal Zone." This conference will focus on the physical processes of coastal meteorology stressing recent developments in theory, measurement devices and techniques, experimental results, modeling, and forecasting. Papers emphasizing the in8uence g on geological, of the coastal atmospheric / oceanic system chemical, biological, social, and economic problems (e.g ; recreation and pollution) are invited. Some suggested topics t' are: 1) Meteorological requirements for coastal zone manage- ~ ment: 2) Analysis, forecasting, and modeling related to meso-sale tisculation, ses breeze, large. and small4cale interactions, cuastal con 6gurations. and ensironmental, biological, social, aryl yonomic probicms: 3) Special atmospheric and oceanic climatological data needs and techniques in coastal regions:
- 4) New measuring ds : es and applications, particularly re-mute scusors and operational buo3s in coastal regions: 5)
Results of coastal experiments, especially interagency co-operatise e tperiments insohing multiplatforms and multi-sensors (e.g., CEWCOM 78, MABLE*S-WC, Panama City Ex-periments I and !!); 6) Mesoscale circulation such as that related to pollution transport and modincation, cloud / fog patterns sea. surface temperature gradients, convection, geo-s physical features, and upwelling: 7) Oceanic and atmospheric processes in8uencing wases, oil spills, surf, shoating and crosion along beaches, and estuaries; and 8) Special coastal cnnditions found around islands and along large lakes. Three copies of titles, reviewer's abstracts p00-400 words), and short abstracts (100 words) for Btit.t.rra publication shouhl be submitted b[21 J'Idy Y979 to the Progrars Chair-man: D. V. R. Noonkester, Code 532, Nas al Ocean Systems Center,. Tan Diego, Calif. 92152 (tel: 714 225 7206). Please include a complete mailing address and phone number with, submittei abstracts. Notination of acceptance will be sent by 20 /.ugust 1979. Due to a short printing schedule for the program, it will be impossible to accommodate abstract re-visions once the abstract has been accepted. A preprint volume will be prepared and distributed only to preregistrants before the meeting. Other conference par-ticipants will receive the preprint volume at the time of registration. Authors of accepted papers must submit com-plete camera ready texts to AMS by H October 1979. Papers should be no longer than 8 pages including diagrams and tables. Page charges will be assessed to defray printing costs. Instructions and special typing paper will be furnished for manuscripts. 1116 188}}