Release notes and warnings

	Release notes and warnings for FOCUS PEARL
	Release notes and warnings for GeoPEARL
	Release notes and warnings for PEARLNEQ
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Change of PEARL e-mail address as of June 1, 2006

Since 1 May 2006, the central e-mail address for PEARL and GeoPEARL is changed. The new e-mail address is: pearl@pesticidemodels.nl. Also the contact address of Aaldrik Tiktak has changed, his new e-mail address is aaldrik.tiktak@pbl.nl. All other address are unaffected.
 Addresses

Release notes and warnings for FOCUS PEARL

• Release of FOCUS PEARL 3.3.3 (23/May/2006)
  FOCUS PEARL 3.3.3 is now available.
   Release notes
   Details

• Warning for version 2.2.2 (3/November/2004)
  FOCUSPEARL_2.2.2 sometimes crashes for substances (parents or metabolites) with Freundlich exponents exceeding 1.0. In such case, the run stops saying that a negative concentration occurred. If no such error message occurs, there is no problem. There are no work arounds to avoid this error. The user could consider to modify the value for the Freundlich exponent to a value of 1.0; the run would then be completed without error.It is anticipated that this bug will be solved in the next release.

• Warning for version 2.2.2 (1/September/2004)
  The calculation of the temperature-dependency of the sorption coefficient contains an error which implies that the model does not consider this dependency. Thus all calculations are performed with a sorption coefficient that is no function of temperature. This bug influences only results of runs in which the molar enthalpy of sorption was set to a non-zero value. Such runs are exceptional because zero is the default value and because measurements of this molar enthalpy are usually not available.

• Release of FOCUS PEARL 2.2.2 (7/August/2003)
  FOCUS PEARL 2.2.2 is now available.
   Details

• Warning for version 1.1.1 (1/September/2002)
  GeoPEARL 1.1.1 may crash for substances (parents or metabolites) with Freundlich exponents exceeding 1.0. In such case, the run stops saying that a negative concentration occurred. If no such error message occurs, there is no problem. There are no work arounds to avoid this error. The user could consider to modify the value for the Freundlich exponent to a value of 1.0; the run would then be completed without error.It is anticipated that this bug will be solved in the next release.

• Release of FOCUS PEARL 1.1.1 (5/January/2001)
  FOCUS PEARL 1.1.1 is now available

Release notes and warnings for GeoPEARL

• Release of version 3.3.3 (17/November/2008)
  Version 3.3.3 of GeoPEARL is now available. GeoPEARL 3.3.3 includes an option to assess the persistence of compounds in the top layer of the soil. Furthermore, the area of interest can be limited on the basis of soil properties.
   Details

• Release of version 2.2.2 (12/September/2006)
  Version 2.2.2 of GeoPEARL is now available. Like FOCUS PEARL 3.3.3, GeoOPEARL 2.2.2 is a bug-fix release. And the model is faster: depending on the application, the run time is 25-75% shorter.
   Details

• Release of version 1.1.1 (24/December/2004)
  Version 1.1.1 of GeoPEARL is now available, together with the new Dutch Decision Tree on Leaching.
   Details

Release notes and warnings for PEARLNEQ

• Release of version 3 (8 November/2006)
  Version 3 of PEARLNEQ is now available. According to recommendations of the FOCUS Kinetics Working Group, the initial mass content in the system should be optimised. This recomendation has been implemented in the new version. Also, a few small bugs were removed. Please refrain from using the old version. Further release notes are found in the manual.
   Details

• Release of version 2 (8 April/2005)
  Version 2 of PEARLNEQ is now available. This version is fully compatible with FOCUS PEARL 2.2.2. This version produces slightly different results than the old version, due to the use of a new PEST version. Test results are included in the manual, which is distributed with the package. Results for the example (page 53 of FOCUS PEARL manual) are no longer valid.

• Warning for version 1 (8/April/2005)
  Version 1 of PEARLNEQ is not compatible with FOCUS PEARL 2.2.2 and therefore produces wrong results. A new version (version 2) is now available at the website.