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DigiCORA® III Sounding Software MW31. Contents of This Manual This manual consists of the following chapters: - Chapter 1, General Information, provides important safety, revision history, contact, and warranty information for the product. • New deliveries of Vaisala DigiCORA. DigiCORA III users • Software upgrade • New ground check device DigiCORA I, II generations and MARWIN.
Vaisala has recently introduced a software version 3.64 for the Digicora III radiosonde processing system. This software version includes several important correction algorithms, which lead to an improved humidity product of the Vaisala RS92 radiosonde. It has been well documented that the Vaisala RS92 radiosonde processed under previous software versions suffered from a daytime dry bias induced by solar heating of the humidity sensor. In addition, like all other polymer based RH sensors, the RS92 response to changes in humidity slows down at cold temperatures leading to a noticeable time lag in the upper troposphere. The new software version 3.64 includes correction algorithms, which largely remove the solar heating induced daytime dry bias and reduces the effect of a decreased sensor response time. Thus humidity measurements using the Vaisala RS92 radiosonde and Digicora software version 3.64 are significantly better than humidity measurements using the same radiosonde, but processed with previous software versions.
This improvement, however, may possibly lead to a problem for data assimilation centers correcting the solar dry bias and for long term time series of humidity using the Vaisala RS92. Radiosonde data transmitted operationally either in TEMP format or in BUFR format, may not include the information which software version or which correction algorithm was used to process the humidity measurements. Therefore, the user of these data, either operational data assimilation centers using these data for numerical weather forecasting, or climate data centers storing these data for long term, may not be able to distinguish, whether the humidity data coming from the Vaisala RS92 have been corrected for day time dry bias or not. Although the improvement of instruments used in atmospheric observations is desired and manufacturers of meteorological equipment are encouraged to implement important updates in their instrumentation, this improvement may lead to inconsistent data sets, if the changes in instrumentation or processing cannot be tracked and transmitted in the meta data that must accompany the observations. The GCOS Reference Upper Air Network (GRUAN) bases its processing of Vaisala RS92 data on the raw data stored in the dc3db files, which also contain the software version number. Thus GRUAN is not impacted by this change in software.
However, Vaisala data received at operational data centers may be impacted by the missing software version, if the software version or the presence of a new correction algorithm for humidity measurements are not or cannot be included in the TEMP or BUFR formatted data transmitted through the Global Telecommunication System ( GTS). Further understanding is needed to avoid potential issues resulting from an improvement in observational techniques. The Vaisala RS92 data continuity issue described above concerns the lack of a software version field in the meta data that is transmitted to operational or climate data centers using the TEMP or BUFR format, where the software version is ONE FACTOR that prevents robust traceability of the characteristics of the radiosonde sensor and processed data. In particular, Digicora v3.64 software applies solar radiation and time-lag corrections in the standard data products, but there is no indication that corrections have been applied in the meta data or the data files (only in the dc3db database file). There are two other factors worth mentioning. The v3.64 corrections are applied differently depending on the sounding mode (Normal vs Research) and the radiosonde model (RS92-SGP only). No corrections are applied for RS92-K radiosondes (to be discontinued soon).
For RS92-SGP sondes in Research mode, only the solar radiation correction is applied and not the time-lag correction. Furthermore, it is possible to “turn off” the corrections by changing a default Digicora setting to “No”.
Further details about this data continuity issue are on my radiosonde webpage at the above link. I’m not familiar with the TEMP and BUFR messages, but certain knowledge of the corrections that were applied (or “none”) requires knowing the software version number, radiosonde model, sounding mode, and value of the Digicora setting “Use2010CalculationForTU”. Much RS92 data that is used for research does not reference meta data but only the data in the sounding data file (EDT or FLEDT). For example, field campaign datasets, or RS92 data downloaded from the ARM archive, are just the FLEDT data files with header information. That is, much research is done without consulting meta data or database files (even if they exist), so these data continuity issues are raised not due to the TEMP and BUFR messages but because the corrections-related parameters are not present in the header of FLEDT and EDT data files. While this doesn’t affect GRUAN data directly, future analyses based on standard RS92 data files will be in doubt. For full future usefulness, data file headers would also contain the site lat/lon/alt and the UT launch time.
Arnova 10d g3 boot into system recovery mode. If you are looking to get Google Play (formerly Android Market) on your tablet, please refer to our Latest firmware updates– 2012/09/26: Arnova Childpad (capacitive model with Alvin UI) firmware now available on Arnova website – 2012/11/07: Arnova 10d G3 firmwares now available on Arnova website – 2012/07/12: Arnova 7b G3 and Arnova 8 G3 firmwares now available on Arnova website – 2012/06/22: Arnova Childpad (resistive model) firmware now available on Arnova website This release is the first public firmware made available for an Arnova G3 device. It will hopefully fix.
Indeed, when we speak about FM-35 TEMP there is no mean to receive extended metadata except their offline collection. It seems, state-of-the-art of collecting upper-air metadata even for the GUAN network, which is according GCOS-73 “must have”, is not sufficient. Even IGRA metadata likely lacks this sort of information. But regarding transmission upper-air messages in BUFR it may be not the case. According to information, I got through CBS IPET-DRC activity, since DigiCORA III version 3.61 Vaisala introduced options, allowing beside others including additional metadata parameters such as 001081 Radiosonde serial number CCITTIA5 001082 Radiosonde ascension number 002067 Radiosonde operating frequency Hz 002095 Type of pressure sensor Code 002096 Type of temperature sensor Code 002097 Type of humidity sensor Code 025061 Software identification and station number CCITTIA5 205060 Information on the reason for termination of the sounding (in plain text). For example, in provided example 025061 was “MW31 3.61” and 205060 was “Increasing pressure”. I don’t know details about managing these options – may be via Windows Registry or DBManager, but I expect they could be readily advised by Vaisala.
However, as Dr. Miloshevich explained, knowing software version only is not sufficient. Potentially, BUFR do has a capability to include required metadata but it requires doing some work from upper-air data users community (e.g. GCOS), IPET-DRC, Vaisala and upper-air network management.
Hi Holger sent me an email concerning this thread Is there any information as to the date when the new processing algorithm was installed for GTS data; has it been installed for GTS sondes? Larry, I did not see your radiosonde web page link (I’ll look for it) At this time our validation system here at NOAA, NPROVS, reports the following RS92 processing systems available: DigicoraI,II or Marwin (Finland Digicora III (Finland) Autosonde (Finland) Does the new processing algorithms apply to all? I will see if we detect a change (and magnitude)using our real-time validation (NPROVS) system. We have previous results documenting dry bias for most sondes (Russian sondes a notable exception). Will follow-up Tony.
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DigiCORA® III Sounding Software MW31. Contents of This Manual This manual consists of the following chapters: - Chapter 1, General Information, provides important safety, revision history, contact, and warranty information for the product. • New deliveries of Vaisala DigiCORA. DigiCORA III users • Software upgrade • New ground check device DigiCORA I, II generations and MARWIN.
Vaisala has recently introduced a software version 3.64 for the Digicora III radiosonde processing system. This software version includes several important correction algorithms, which lead to an improved humidity product of the Vaisala RS92 radiosonde. It has been well documented that the Vaisala RS92 radiosonde processed under previous software versions suffered from a daytime dry bias induced by solar heating of the humidity sensor. In addition, like all other polymer based RH sensors, the RS92 response to changes in humidity slows down at cold temperatures leading to a noticeable time lag in the upper troposphere. The new software version 3.64 includes correction algorithms, which largely remove the solar heating induced daytime dry bias and reduces the effect of a decreased sensor response time. Thus humidity measurements using the Vaisala RS92 radiosonde and Digicora software version 3.64 are significantly better than humidity measurements using the same radiosonde, but processed with previous software versions.
This improvement, however, may possibly lead to a problem for data assimilation centers correcting the solar dry bias and for long term time series of humidity using the Vaisala RS92. Radiosonde data transmitted operationally either in TEMP format or in BUFR format, may not include the information which software version or which correction algorithm was used to process the humidity measurements. Therefore, the user of these data, either operational data assimilation centers using these data for numerical weather forecasting, or climate data centers storing these data for long term, may not be able to distinguish, whether the humidity data coming from the Vaisala RS92 have been corrected for day time dry bias or not. Although the improvement of instruments used in atmospheric observations is desired and manufacturers of meteorological equipment are encouraged to implement important updates in their instrumentation, this improvement may lead to inconsistent data sets, if the changes in instrumentation or processing cannot be tracked and transmitted in the meta data that must accompany the observations. The GCOS Reference Upper Air Network (GRUAN) bases its processing of Vaisala RS92 data on the raw data stored in the dc3db files, which also contain the software version number. Thus GRUAN is not impacted by this change in software.
However, Vaisala data received at operational data centers may be impacted by the missing software version, if the software version or the presence of a new correction algorithm for humidity measurements are not or cannot be included in the TEMP or BUFR formatted data transmitted through the Global Telecommunication System ( GTS). Further understanding is needed to avoid potential issues resulting from an improvement in observational techniques. The Vaisala RS92 data continuity issue described above concerns the lack of a software version field in the meta data that is transmitted to operational or climate data centers using the TEMP or BUFR format, where the software version is ONE FACTOR that prevents robust traceability of the characteristics of the radiosonde sensor and processed data. In particular, Digicora v3.64 software applies solar radiation and time-lag corrections in the standard data products, but there is no indication that corrections have been applied in the meta data or the data files (only in the dc3db database file). There are two other factors worth mentioning. The v3.64 corrections are applied differently depending on the sounding mode (Normal vs Research) and the radiosonde model (RS92-SGP only). No corrections are applied for RS92-K radiosondes (to be discontinued soon).
For RS92-SGP sondes in Research mode, only the solar radiation correction is applied and not the time-lag correction. Furthermore, it is possible to “turn off” the corrections by changing a default Digicora setting to “No”.
Further details about this data continuity issue are on my radiosonde webpage at the above link. I’m not familiar with the TEMP and BUFR messages, but certain knowledge of the corrections that were applied (or “none”) requires knowing the software version number, radiosonde model, sounding mode, and value of the Digicora setting “Use2010CalculationForTU”. Much RS92 data that is used for research does not reference meta data but only the data in the sounding data file (EDT or FLEDT). For example, field campaign datasets, or RS92 data downloaded from the ARM archive, are just the FLEDT data files with header information. That is, much research is done without consulting meta data or database files (even if they exist), so these data continuity issues are raised not due to the TEMP and BUFR messages but because the corrections-related parameters are not present in the header of FLEDT and EDT data files. While this doesn’t affect GRUAN data directly, future analyses based on standard RS92 data files will be in doubt. For full future usefulness, data file headers would also contain the site lat/lon/alt and the UT launch time.
Arnova 10d g3 boot into system recovery mode. If you are looking to get Google Play (formerly Android Market) on your tablet, please refer to our Latest firmware updates– 2012/09/26: Arnova Childpad (capacitive model with Alvin UI) firmware now available on Arnova website – 2012/11/07: Arnova 10d G3 firmwares now available on Arnova website – 2012/07/12: Arnova 7b G3 and Arnova 8 G3 firmwares now available on Arnova website – 2012/06/22: Arnova Childpad (resistive model) firmware now available on Arnova website This release is the first public firmware made available for an Arnova G3 device. It will hopefully fix.
Indeed, when we speak about FM-35 TEMP there is no mean to receive extended metadata except their offline collection. It seems, state-of-the-art of collecting upper-air metadata even for the GUAN network, which is according GCOS-73 “must have”, is not sufficient. Even IGRA metadata likely lacks this sort of information. But regarding transmission upper-air messages in BUFR it may be not the case. According to information, I got through CBS IPET-DRC activity, since DigiCORA III version 3.61 Vaisala introduced options, allowing beside others including additional metadata parameters such as 001081 Radiosonde serial number CCITTIA5 001082 Radiosonde ascension number 002067 Radiosonde operating frequency Hz 002095 Type of pressure sensor Code 002096 Type of temperature sensor Code 002097 Type of humidity sensor Code 025061 Software identification and station number CCITTIA5 205060 Information on the reason for termination of the sounding (in plain text). For example, in provided example 025061 was “MW31 3.61” and 205060 was “Increasing pressure”. I don’t know details about managing these options – may be via Windows Registry or DBManager, but I expect they could be readily advised by Vaisala.
However, as Dr. Miloshevich explained, knowing software version only is not sufficient. Potentially, BUFR do has a capability to include required metadata but it requires doing some work from upper-air data users community (e.g. GCOS), IPET-DRC, Vaisala and upper-air network management.
Hi Holger sent me an email concerning this thread Is there any information as to the date when the new processing algorithm was installed for GTS data; has it been installed for GTS sondes? Larry, I did not see your radiosonde web page link (I’ll look for it) At this time our validation system here at NOAA, NPROVS, reports the following RS92 processing systems available: DigicoraI,II or Marwin (Finland Digicora III (Finland) Autosonde (Finland) Does the new processing algorithms apply to all? I will see if we detect a change (and magnitude)using our real-time validation (NPROVS) system. We have previous results documenting dry bias for most sondes (Russian sondes a notable exception). Will follow-up Tony.
...">Digicora Iii Software(03.02.2020)DigiCORA® III Sounding Software MW31. Contents of This Manual This manual consists of the following chapters: - Chapter 1, General Information, provides important safety, revision history, contact, and warranty information for the product. • New deliveries of Vaisala DigiCORA. DigiCORA III users • Software upgrade • New ground check device DigiCORA I, II generations and MARWIN.
Vaisala has recently introduced a software version 3.64 for the Digicora III radiosonde processing system. This software version includes several important correction algorithms, which lead to an improved humidity product of the Vaisala RS92 radiosonde. It has been well documented that the Vaisala RS92 radiosonde processed under previous software versions suffered from a daytime dry bias induced by solar heating of the humidity sensor. In addition, like all other polymer based RH sensors, the RS92 response to changes in humidity slows down at cold temperatures leading to a noticeable time lag in the upper troposphere. The new software version 3.64 includes correction algorithms, which largely remove the solar heating induced daytime dry bias and reduces the effect of a decreased sensor response time. Thus humidity measurements using the Vaisala RS92 radiosonde and Digicora software version 3.64 are significantly better than humidity measurements using the same radiosonde, but processed with previous software versions.
This improvement, however, may possibly lead to a problem for data assimilation centers correcting the solar dry bias and for long term time series of humidity using the Vaisala RS92. Radiosonde data transmitted operationally either in TEMP format or in BUFR format, may not include the information which software version or which correction algorithm was used to process the humidity measurements. Therefore, the user of these data, either operational data assimilation centers using these data for numerical weather forecasting, or climate data centers storing these data for long term, may not be able to distinguish, whether the humidity data coming from the Vaisala RS92 have been corrected for day time dry bias or not. Although the improvement of instruments used in atmospheric observations is desired and manufacturers of meteorological equipment are encouraged to implement important updates in their instrumentation, this improvement may lead to inconsistent data sets, if the changes in instrumentation or processing cannot be tracked and transmitted in the meta data that must accompany the observations. The GCOS Reference Upper Air Network (GRUAN) bases its processing of Vaisala RS92 data on the raw data stored in the dc3db files, which also contain the software version number. Thus GRUAN is not impacted by this change in software.
However, Vaisala data received at operational data centers may be impacted by the missing software version, if the software version or the presence of a new correction algorithm for humidity measurements are not or cannot be included in the TEMP or BUFR formatted data transmitted through the Global Telecommunication System ( GTS). Further understanding is needed to avoid potential issues resulting from an improvement in observational techniques. The Vaisala RS92 data continuity issue described above concerns the lack of a software version field in the meta data that is transmitted to operational or climate data centers using the TEMP or BUFR format, where the software version is ONE FACTOR that prevents robust traceability of the characteristics of the radiosonde sensor and processed data. In particular, Digicora v3.64 software applies solar radiation and time-lag corrections in the standard data products, but there is no indication that corrections have been applied in the meta data or the data files (only in the dc3db database file). There are two other factors worth mentioning. The v3.64 corrections are applied differently depending on the sounding mode (Normal vs Research) and the radiosonde model (RS92-SGP only). No corrections are applied for RS92-K radiosondes (to be discontinued soon).
For RS92-SGP sondes in Research mode, only the solar radiation correction is applied and not the time-lag correction. Furthermore, it is possible to “turn off” the corrections by changing a default Digicora setting to “No”.
Further details about this data continuity issue are on my radiosonde webpage at the above link. I’m not familiar with the TEMP and BUFR messages, but certain knowledge of the corrections that were applied (or “none”) requires knowing the software version number, radiosonde model, sounding mode, and value of the Digicora setting “Use2010CalculationForTU”. Much RS92 data that is used for research does not reference meta data but only the data in the sounding data file (EDT or FLEDT). For example, field campaign datasets, or RS92 data downloaded from the ARM archive, are just the FLEDT data files with header information. That is, much research is done without consulting meta data or database files (even if they exist), so these data continuity issues are raised not due to the TEMP and BUFR messages but because the corrections-related parameters are not present in the header of FLEDT and EDT data files. While this doesn’t affect GRUAN data directly, future analyses based on standard RS92 data files will be in doubt. For full future usefulness, data file headers would also contain the site lat/lon/alt and the UT launch time.
Arnova 10d g3 boot into system recovery mode. If you are looking to get Google Play (formerly Android Market) on your tablet, please refer to our Latest firmware updates– 2012/09/26: Arnova Childpad (capacitive model with Alvin UI) firmware now available on Arnova website – 2012/11/07: Arnova 10d G3 firmwares now available on Arnova website – 2012/07/12: Arnova 7b G3 and Arnova 8 G3 firmwares now available on Arnova website – 2012/06/22: Arnova Childpad (resistive model) firmware now available on Arnova website This release is the first public firmware made available for an Arnova G3 device. It will hopefully fix.
Indeed, when we speak about FM-35 TEMP there is no mean to receive extended metadata except their offline collection. It seems, state-of-the-art of collecting upper-air metadata even for the GUAN network, which is according GCOS-73 “must have”, is not sufficient. Even IGRA metadata likely lacks this sort of information. But regarding transmission upper-air messages in BUFR it may be not the case. According to information, I got through CBS IPET-DRC activity, since DigiCORA III version 3.61 Vaisala introduced options, allowing beside others including additional metadata parameters such as 001081 Radiosonde serial number CCITTIA5 001082 Radiosonde ascension number 002067 Radiosonde operating frequency Hz 002095 Type of pressure sensor Code 002096 Type of temperature sensor Code 002097 Type of humidity sensor Code 025061 Software identification and station number CCITTIA5 205060 Information on the reason for termination of the sounding (in plain text). For example, in provided example 025061 was “MW31 3.61” and 205060 was “Increasing pressure”. I don’t know details about managing these options – may be via Windows Registry or DBManager, but I expect they could be readily advised by Vaisala.
However, as Dr. Miloshevich explained, knowing software version only is not sufficient. Potentially, BUFR do has a capability to include required metadata but it requires doing some work from upper-air data users community (e.g. GCOS), IPET-DRC, Vaisala and upper-air network management.
Hi Holger sent me an email concerning this thread Is there any information as to the date when the new processing algorithm was installed for GTS data; has it been installed for GTS sondes? Larry, I did not see your radiosonde web page link (I’ll look for it) At this time our validation system here at NOAA, NPROVS, reports the following RS92 processing systems available: DigicoraI,II or Marwin (Finland Digicora III (Finland) Autosonde (Finland) Does the new processing algorithms apply to all? I will see if we detect a change (and magnitude)using our real-time validation (NPROVS) system. We have previous results documenting dry bias for most sondes (Russian sondes a notable exception). Will follow-up Tony.
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