Consultant - Atmospheric Transport Modeling Post-Processing

The Preparatory Commission for the Comprehensive Nuclear Test Ban Treaty Organization with its Headquarters in Vienna is the international organisation setting up the global verification system foreseen under the Comprehensive Nuclear Test Ban Treaty (CTBT), which is the Treaty banning any nuclear weapon test explosion or any other nuclear explosions. The treaty provides for a global verification regime, including a network of 321 stations worldwide, a communication system, an international data centre and on site inspections to monitor compliance.
We seek to recruit a highly qualified candidate for the following positions in the Commission's Provisional Technical Secretariat:
Title of Assignment: Consultant - Atmospheric Transport Modeling Post-Processing
Vacancy Number: VACIDC0011-2012
Date of Issuance: 14-Mar-2012
Deadline Date: 27-Mar-2012
Start date: As soon as possible
Duration: Until 21 December 2012 with the possibility of extension for the total duration of 12 months subject to the availability of funds
Assignment:
Background:

The CTBTO seeks a consultant to work in the International Data Centre Division (IDC) to enhance its capability in the post-processing of atmospheric transport modeling (ATM) data and its integration with radionuclide observations and the events detected by the waveform stations in the International Monitoring System (IMS) network.
The Atmospheric Transport Modeling (ATM) at the IDC produces Source Receptor Sensitivity (SRS) fields, which specify the sensitivity of each radionuclide station to potential sources on the globe. Each Radionuclide sample in the IMS network has an associated Field of Regard (FOR), which is derived from the SRS files. The FOR for a radionuclude sample represents the geographic area where the air could have originated for that sample at a given time period. For each radionuclide sample the FOR grows in geographic extent as one goes backward in time. It is common to consider an FOR covering 14 days prior to radionuclide sampling time.

In addition to Radionuclide stations, the IMS network also includes waveform stations, which record events releasing energy which travel through the earth, oceans and atmosphere. The data from these stations are processed to identify the location and time when the event occurred. Each event location also has an associated error ellipse, which indicates the probable region where the event occurred.

Duties:
The scope of this work comprises but is not limited to:
  • Become familiar with existing tools which can be used to read, display and interact with ATM products (beginning with the Field of Regard) and waveform error ellipses;
  • Build on existing software and develop new software tools which can read SRS fields and error ellipses. The output will include time synchronized visualization of these objects, as well as a list of intersecting objects. This list must be in a format which can be used for reporting and in subsequent post processing steps. The visualization will be made with another software, and the output of this process should be in a compatible format, e.g., KML format;
  • Develop a feature enabling computation of the activity concentration expected to be detected at other IMS radionuclide stations if the identified waveform error ellipses were sources of a radionuclide release;
  • In addition to reading SRS fields, the software must also be able to read other ATM products, such as Possible Source Regions (PSRs) and Multi-Model Possible Source Regions (MMPSRs);
  • The software must also be able to account for a delayed radionuclide release from a waveform event;
  • The software will run from the command line, with clearly defined input and output, which will facilitate chaining tools, in the UNIX tradition; and
  • The software that is produced must include documentation which explains the software design, as well as user documentation which explains how the software can be operated.

Qualifications:
  1. Advanced university degree in meteorology, applied mathematics, physics of the atmosphere or environmental engineering in an area of study relevant to the position;
  2. Experience with atmospheric transport models, and understanding their outputs;
  3. Familiarity with techniques of airborne radionuclide measurements is desirable;
  4. Experience in efficient numerical programming in FORTRAN, as well as in the scripting languages: shell/perl/python;
  5. Experience in developing software in a Linux/UNIX environment;
  6. Proven analytical skills; and
  7. Excellent written and oral communication skills in the English language.
Competencies:
Conscientious and efficient in meeting commitments, observing deadlines and achieving results and be able to work independently with minimum supervision. Very good skills in communicating with people from different backgrounds and demonstrated ability to work in a multicultural environment.

Consultant - Atmospheric Transport Modeling Post-Processing Consultant - Atmospheric Transport Modeling Post-Processing Reviewed by Unknown on 9:15:00 AM Rating: 5

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