|
Size: 3666
Comment:
|
Size: 4586
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 43: | Line 43: |
| Line 48: | Line 49: |
| Line 53: | Line 55: |
| Line 58: | Line 61: |
| Line 67: | Line 71: |
| Kevin Cowtan and Robert Way fill the gaps of the HadCRUT temperature data set by using satellite data. Compare their new reconstruction of surface temperature data to 1) independent in-situ observations and 2) reanalysis data | Kevin Cowtan and Robert Way fill the gaps of the HadCRUT temperature data set by using satellite data. Compare their new reconstruction of surface temperature data to independent in-situ observations and reanalysis data. |
| Line 69: | Line 73: |
| Their methods and data are freely available: | Cowtand and Way (2013) methods and data are freely available: |
| Line 78: | Line 82: |
| === Cowtan and Way reconstruction === | === Cowtan and Way (CW2013) reconstruction === |
| Line 82: | Line 86: |
| * Review their interpolation methods (presentation!) | * Review methods of Cowtan and Way (2013) |
| Line 84: | Line 88: |
| * Calculate trends | * Calculate trends and variabilites === Variations in Surface Air Temperature Observations in the Arctic === |
| Line 88: | Line 94: |
| * | * Review methods of Rigor et al. (2000) * Write code to read and plot the gridded buoy data * Calculate trends and variabilites Reference: * [[http://iabp.apl.washington.edu/AirT/RigorEtal-SAT.pdf|Rigor, I., R. Colony, and S. Martin, 2000, Variations in Surface Air Temperature Observations in the Arctic, 1979 - 1997, J. Climate, Vol. 13, no 5, 896-914.]] === Data intercomparison === (advanced programming skills needed) * Write code to interpolate the different datasets in a common grid * Compare CW2013, buoy and reanalysis data (variability and trends) |
| Line 93: | Line 111: |
| == Soil moisture == | == HOAPS ocean flux sampling bias == |
| Line 95: | Line 113: |
| * [[http://www.hoaps.org | HOAPS climatology]] of ocean surface fluxes * HOAPS is sampled twice a day * What is the impact of undersampling the dirnal cycle on monthly means? * What is the impact of sea ice gaps on monthly means? * How do HOAPS surface flux estimates compare to literature values of global mean ocean surface fluxes? |
|
| Line 101: | Line 125: |
| * prepare [[ftp://ftp.ifremer.fr/ifremer/cersat/products/gridded/psi-concentration/data/|sea ice data]] (Lars) :-) (CMIP5 data available) * prepare CMIP5 data (Alex) :-) |
* CW2013 :-) |
| Line 105: | Line 128: |
| * Stations :-) | * Bouy data :-) * HOAPS data :-) |
63-953 Climate and Satellite Data Analysis
MS Integrated Climate System Sciences
Date: 3.2.2014-7.2.2014
Place: Geom 1536c
Course objectives
The participants will learn to practically work with climate model, reanalysis, in-situ station and satellite data. Organized as a group project, the participants will further learn the principles of project management and shared software development.
Schedule
Monday
General Introduction
Stochastic analysis of time series.ipynb Monte carlo.ipynb GISSTEMP netcdf.ipynb datetimeobjects.ipynb Station data seasonal cycle.ipynb
Group work: develop a project plan and write a short technical proposal for your project.
Final report due by 15. March 2014
Obtain data and do preliminary analysis (e.g. data coverage).
Tuesday
Morning: Group presentations of project plan and preliminary analysis.
Afternoon: implementation and project work
Wednesday
Morning: Group presentations of methods and code implementations
Afternoon: Project work
Thursday
Morning: Group presentations of preliminary results
Afternoon: Project work
Friday
Morning: final presenation of results and discussion
Afternoon: evaluation and preparation of final report
Topics for group work
Coverage bias in the HadCRUT4 temperature series and its impact on recent temperature trends
Kevin Cowtan and Robert Way fill the gaps of the HadCRUT temperature data set by using satellite data. Compare their new reconstruction of surface temperature data to independent in-situ observations and reanalysis data.
Cowtand and Way (2013) methods and data are freely available:
Surface temperatures are available from the International Arctic Buoy Programme (IABP) website:
Cowtan and Way (CW2013) reconstruction
- Review methods of Cowtan and Way (2013)
- Write code to read and plot the data
- Calculate trends and variabilites
Variations in Surface Air Temperature Observations in the Arctic
- Review methods of Rigor et al. (2000)
- Write code to read and plot the gridded buoy data
- Calculate trends and variabilites
Reference:
Data intercomparison
(advanced programming skills needed)
- Write code to interpolate the different datasets in a common grid
- Compare CW2013, buoy and reanalysis data (variability and trends)
HOAPS ocean flux sampling bias
HOAPS climatology of ocean surface fluxes
- HOAPS is sampled twice a day
- What is the impact of undersampling the dirnal cycle on monthly means?
- What is the impact of sea ice gaps on monthly means?
- How do HOAPS surface flux estimates compare to literature values of global mean ocean surface fluxes?
TODOs
Data
CW2013
ERA-Interim
NCEP
Bouy data
HOAPS data
Final report
Template structure:
- Abstract
- Introduction: state of the art (literature), statement of the problem
- Methods and data
- Results
- Discussion
- Conlcusion
References
- Python Scripting for Computational Science, Hans Petter Langtangen, Springer (available in the ZMAW library)