# Presentation: 855445

## MIPAS

***MIPAS***
***Michelson Interferometer for Passive Atmospheric Sounding***

***Thorsten.Fehr@esa.int***

- Aura Workshop, The Hague, 8 November 2005

- The MIPAS Team presented by T. Fehr

## The Interferometer

**The Interferometer**

## The Interferometer

**T****he ****Interferometer**

## Fact Sheet

- 4.1 – 14.6 μm
- Spectral resolution:
- 0.035 cm-1 (FR)
- 0.0625 cm-1 (RR)
- Altitude range:
- Nominal mode:  6 – 68 km
- other observation modes
- Coverage:
- Global, pole to pole
- Measurement schedule:
- Continuous until 2004
- Discontinuous at present (35% duty cycle)

- Measurement products:
*Operational: *
*p, T, H**2**O, O**3**, CH**4**, N**2**O, HNO**3**, NO**2*
*Scientific: *
*NO, N**2**O**5**, HNO**4**, ClONO**2**, ClO, CO, CFCs, NH**3**, C**2**H**6* *HDO, **O**3* isotopomers and others (more than 25 parameters)

**Fact Sheet**

## Coverage in one day

**Coverage in one day**

## Coverage in three days

**Coverage in three days**

## Research Areas

**Stratospheric/Tropospheric exchange**upward transport in tropics, polar subsidence
**Chemistry of the Upper Troposphere**vertical transport of polluted air from PBL
**Mesosphere and Lower Termosphere**carbon budget in the upper atmosphere, ozone in the mesospherenon-LTE parameters, solar storm effects
**Climatology and Weather Forecasting**temperature and ozone in the stratosphere for data assimilation

**Research ****Areas**

## Spectral Channels

##         Spectral channels of MIPAS: 26 km tangent altitude       

**Channel**** A**

**Tangent Height [km]**

## Retrieved Species

**Retrieved Species**

## Retrieved Species (science)

**Retrieved Species (****science****)**

## Measurement performance

-  Excellent radiometric and spectral performance (exceeding specs)
- December 2002: Cooler anomalies
- Resolved through bypassing automatic compensation software, and performing manual balancing of the two sterling cooler units.
- March 2003: First sparse interferometer instabilities, gradually increasing in frequency
- Mission interruptions for investigations since mid 2004
- 4.   January 2005 systematic operations have resumed with
- Reduced duty cycle (35% of time “on”, 65% “off”)
- Reduced spectral resolution (40.99%)
- Denser geographical sampling (altitude, latitude)

**Instrument Performance**

## Operational Processing

**Adaptation to reduced resolution available for level 1B, including calibration improvements**
**Algorithm Adaptation for Level 2 is underway**
**Currently all level 0 are stored**
**Level 1B processing begins after 4.65 installation (this month)**
**Level 2 processing will resume 2006 (including all backlog)**
**Full-Resolution Mission reprocessing (July 2002 – March 2004) completed, data available online via ftp**

**Operational Processing**

## Methane

- Mapping the 3D profile of different trace gases: _Methane_ (CH4)

**Methane**

**Notes:**
3D profile of the atmosphere: here for methane.

## Ozone

**Equator**

**North Pole**

**South Pole**

***Along a complete orbit***

**Equator**

**Equator**

**Ozone**

- Mapping the 3D profile of different trace gases: _Methane_ (CH4)

## MIPAS-Model Comparison

**Ozone distribution at 50 hPa 26.09.02 [top] / 13.10.02 [bottom]**

**	****CLaMS****	****KASIMA****	****DLR-ROSE**

**MIPAS****-Model Comparison**

## NOy

**N****2****O**

**HNO****3**

**ClONO****2**

**N****2****O****5**

**NO**

**NO****2**

**27/09/2002**

**NO****y**

## Balloon/Aircraft Validation

**Ongoing Activity**
**Example: Balloon Campaign**
**Aire, 43°N, 24 Sep. 2002 (Fl. 11):**
-  **Perfect coincidence in terms of time and location**

**Balloon/Aircraft Validation**

**IMK, Karlsruhe**

## Research Highlights

**Discovery of a nitric acid trihydrate (NAT) PSC belt around Antarctica caused by mountain waves**
**   ***(Höpfner et al., **ACPD, 2005a)*
**Spectroscopic evidence for ********-NAT as constituent of Type 1a PSCs**
**   ***(Höpfner et al., **ACPD, 2005b)*
**Solar Proton Event (SPE) November 2003:**
**First detection of SPE induced enhancements of  HOCl, N****2****O****5****, ClONO****2**** (apart from  NO****x****, HNO****3****, and reduction of O****3****) and identification of two different chemical processes***(López-Puertas et al., JGR, 2005a, 2005b; v. Clarmann et al., JGR, 2005)*
**Downward transport of NO****x**** from the upper atmosphere:**
**NO****x**** intrusion in Antarctic winter 2003 from UA  = 9% of annual SH production of NO****y**** by N****2****O oxidation**
*   **(Funke et al., JGR**, 2005)*
**Secondary Antarctic mid-winter HNO****3**** maximum can be related to downward transport of NO****x ****and conversion via ion cluster chemistry**
*   **(Stiller et al. JGR**, 2005)*

**Research Highlights**

## Research Highlights

**First space-borne observation of ClO by mid-IR limb emission spectroscopy**** **
**   ***(Glatthor et al., **JGR, 2004)*
**First space****-****borne observations of springtime Antarctic stratospheric ClONO****2**** reveals unusual ****recovery of chlorine into ClONO****2**
*   **(Höpfner et al., **JGR, 2004)*
**Quantification of NO****y**** partitioning and denitrification**
**   ***(Mengistu Tsidu et al., JGR, 2005**)*
**Upper troposphere / lower stratosphere H****2****O****:**
**Discovery of  global subtropical bands of enhanced water vapor at around       18 km with maximum values over the Arabic peninsula**
*   **(Milz et al., JGR, 2005**)*

**Research Highlights**

## How to apply for data accesswithin a Category 1 use framework

**Application for Category 1 use data access can be submitted to ESA **_**at any time **_**using the ESA Earth Observation Principal Investigator portal (already established for OMI).**

**How to apply for data access****within a Category 1 use framework**

**Terms and conditions:**
-  to use the data provided for Category 1 use only **within the project team** (i.e. PI and co-PIs) and only for the purpose described in the project proposal
-  to widely **publish** the project results in **scientific publications** or presentations (with data citation: ***“******[mission or instrument] Data provided by European Space Agency******”***)

***When the requested data is ***_***systematically***_*** available on ESA Internet servers, e.g. MIPAS****** ******:***
****** **_**Registration**_** **(i.e. a simplified proposal)

***When the requested data is related to specific acquisition or dissemination constraints ******(e.g. ASAR High Rate data)****** : ***
****** **_**Project proposal**_
***The proposal is submitted to a peer review process****** ******[about 8 weeks before acceptance notification] ***

## ENVISAT Mission 

**unique combination of 9 instruments addressing land, ocean, ice and atmosphere studies,**
**instruments working nominally, except for MIPAS (discontinuous operations) and GOMOS (but workaround found).**
** ****78 different types of data products****    ****250 Gigabytes of data products generated per day**
**  ****Satellite OK with mid-term operations capabilities:**
**65 % of hydrazine available, **
**the on-board hydrazine is the main limiting factor for the mission lifetime**
**  ****Operations funding expected until 2010**

**E****N****VISAT Mission **

## More on MIPAS at the Aura Workshop:
Thu. 08:45, The First two years of the MIPAS/ENVISAT mission: Scientific results related to the upper troposphere and lower stratosphere (UTLS), Gabriele P. Stiller
Thu., 15:00 Origin of the January-March 2004 strong NO2 enhancement in the northern polar stratosphere using MIPAS and GOMOS data, Jean-Baptiste Renard

Poster: Massimo Carlotti, GMTR: Two-Dimensional Multi-Target Retrieval Model for MIPAS/ENVISAT Observations
Poster: Bernd Funke, The first two years of the MIPAS/ENVISAT mission: Scientific results related to the stratosphere and mesosphere
Poster: Thorsten Fehr, The ENVISAT Atmospheric Chemistry Mission: Status and Performance
Poster: Mathias Milz, Measurements of water vapour with MIPAS/Envisat
Poster: Yvan Orsolini, MIPAS Observations of Stratospheric Impacts of Solar Storms
Poster: Jörg Steinwagner, Global distribution of water isotopes retrieved from MIPAS measurements
Poster: Gabriele P. Stiller The first two years of the MIPAS/ENVISAT mission: Scientific results related to polar ozone chemistry
Poster: Joanne Walker, MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) and MLS carbon monoxide retrievals compared

- Thu. 08:45, The First two years of the MIPAS/ENVISAT mission: Scientific results related to the upper troposphere and lower stratosphere (UTLS), Gabriele P. Stiller
- Thu., 15:00 Origin of the January-March 2004 strong NO2 enhancement in the northern polar stratosphere using MIPAS and GOMOS data, Jean-Baptiste Renard
- Poster: Massimo Carlotti, GMTR: Two-Dimensional Multi-Target Retrieval Model for MIPAS/ENVISAT Observations
- Poster: Bernd Funke, The first two years of the MIPAS/ENVISAT mission: Scientific results related to the stratosphere and mesosphere
- Poster: Thorsten Fehr, The ENVISAT Atmospheric Chemistry Mission: Status and Performance
- Poster: Mathias Milz, Measurements of water vapour with MIPAS/Envisat
- Poster: Yvan Orsolini, MIPAS Observations of Stratospheric Impacts of Solar Storms
- Poster: Jörg Steinwagner, Global distribution of water isotopes retrieved from MIPAS measurements
- Poster: Gabriele P. Stiller The first two years of the MIPAS/ENVISAT mission: Scientific results related to polar ozone chemistry
- Poster: Joanne Walker, MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) and MLS carbon monoxide retrievals compared

**MIPAS at the Aura WS**