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--- pmip3:design:lm:index [2009/09/11 23:34]
gavin
+++ pmip3:design:lm:index [2009/09/17 08:17]
jypeter Added link to orbital parameters' table, and cosmetic changes
@@ Line 62: / Line 62: @@
 ==== Orbital forcing ====
-Calculation from Berger (1978), annually varying.
+The following orbital parameters parameters should be used, if they are not internally calculated.
-Note that over the period 0-2100 CE, the parameters are well approximated by linear regressions
-ECC = 0.017475 - 0.000000382*Year
+Note: calculation from Berger (1978), annually varying.
-OBL = 23.697   - 0.000128*Year
-PERI= 248.79   + 0.0170*Year
+=== Precomputed table ===
+The {{:pmip3:design:lm:pmip3_lm_orbital_parameters.txt|parameters' table}} has been supplied by
+[[gschmidt@giss.nasa.gov|Gavin Schmidt]] (GISS).
+=== Linear regressions ===
+Over the period 0-2100 CE, the parameters are well approximated by the following linear regressions:
+^  Parameter  ^  Linear approximation  ^
+|  ECC  |  0.017475 - 0.000000382 * Year |
+|  OBL  |  23.697   - 0.000128 * Year |
+|  PERI-180  |  68.79   + 0.0170 * Year |

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